Log client details for API and agent requests

Replace the deprecated copilotRuntimeNextJSAppRouterEndpoint wrapper
(which was already the v2 single-route handler underneath) with
createCopilotRuntimeHandler from @copilotkit/runtime/v2, built once at
module scope, and plug in a custom PostgresAgentRunner:

- run() proxies the agent's event stream untouched — MAF persists every
  turn in chatthreadsnapshot, so the BFF records nothing
- connect() forwards to MAF's snapshot hydration (empty-messages run →
  RUN_STARTED → MESSAGES_SNAPSHOT → RUN_FINISHED, no LLM call), making
  the DB the only conversation store — correct across clears, restarts
  and future instances
- stop() aborts via a process-local live-run map (same pattern as the
  official sqlite-runner); isRunning() has no caller in the v2 SSE path

This deletes the whole workaround layer the in-memory runner forced:
the connect intercepts (URL + envelope forms) and Asistente's
client-side hydration run. The ask-box flow now awaits connectAgent
instead. Auth moves to a single Request rewrite (ws_token cookie →
Authorization Bearer) before the handler — the v2 path forwards
authorization + x-* headers to both run clones and runner.connect.
Stays in single-route mode: same envelope protocol the client already
auto-detected, no exposure to CopilotKit#4953, /threads* REST not
needed. Telemetry disabled via COPILOTKIT_TELEMETRY_DISABLED.

Verified full matrix in dev: fresh ask, reload replay via runner,
3 cleared convos + double navigation (only last survives), card renders
once and survives follow-up + reload, Inicio ask-box with history,
stale-tab persists only its new turn. 126 backend tests green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.env.example

@@ -23,4 +23,4 @@ VAPID_PUBLIC_KEY=
 
 # ── AI agent (optional in dev; Asistente won't work without it) ──────────────
 OPENAI_API_KEY=
-AGENT_MODEL=gpt-5.4-mini
+AGENT_MODEL=gpt-5.6-luna

.github/workflows/deploy.yml

@@ -15,7 +15,7 @@ jobs:
         run: |
           cd backend
           python3 -m venv /tmp/test-venv
-          /tmp/test-venv/bin/pip install --quiet -r requirements.txt -r requirements-dev.txt
+          /tmp/test-venv/bin/pip install --quiet -r requirements.txt -r requirements-dev.txt -c constraints.txt
           /tmp/test-venv/bin/python -m pytest tests/ -q
 
       - name: Frontend typecheck + API type drift gate

.gitignore

@@ -16,3 +16,8 @@ tech_docs/
 .claude/
 .venv/
 frontend/openapi.json
+
+# playwright (demo artifacts are generated, not committed)
+frontend/test-results/
+frontend/playwright-report/
+frontend/e2e-docs/

backend/Dockerfile

@@ -1,7 +1,7 @@
 FROM python:3.11-slim
 WORKDIR /app
 RUN apt-get update && apt-get install -y --no-install-recommends poppler-utils && rm -rf /var/lib/apt/lists/*
-COPY requirements.txt .
+COPY requirements.txt constraints.txt ./
-RUN pip install --no-cache-dir --pre -r requirements.txt
+RUN pip install --no-cache-dir --pre -r requirements.txt -c constraints.txt
 COPY . .
 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]

backend/Dockerfile.prod

@@ -1,7 +1,7 @@
 FROM python:3.11-slim
 WORKDIR /app
 RUN apt-get update && apt-get install -y --no-install-recommends poppler-utils && rm -rf /var/lib/apt/lists/*
-COPY requirements.txt .
+COPY requirements.txt constraints.txt ./
-RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt -c constraints.txt
 COPY . .
 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "2"]

backend/alembic/versions/10f4a4f71964_track_agui_run_id_in_chat_logs.py

@@ -0,0 +1,35 @@
+"""track agui run id in chat logs
+
+Revision ID: 10f4a4f71964
+Revises: ecb99a158fbf
+Create Date: 2026-07-14 22:32:16.771655
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+
+# revision identifiers, used by Alembic.
+revision: str = '10f4a4f71964'
+down_revision: Union[str, Sequence[str], None] = 'ecb99a158fbf'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('chatrunlog', sa.Column('agui_run_id', sqlmodel.sql.sqltypes.AutoString(), nullable=True))
+    op.create_index(op.f('ix_chatrunlog_agui_run_id'), 'chatrunlog', ['agui_run_id'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_chatrunlog_agui_run_id'), table_name='chatrunlog')
+    op.drop_column('chatrunlog', 'agui_run_id')
+    # ### end Alembic commands ###

backend/alembic/versions/794baf50635b_chat_thread_snapshot.py

@@ -0,0 +1,45 @@
+"""chat thread snapshot
+
+Revision ID: 794baf50635b
+Revises: 961802a2f50d
+Create Date: 2026-07-04 17:49:14.914103
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = '794baf50635b'
+down_revision: Union[str, Sequence[str], None] = '961802a2f50d'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('chatthreadsnapshot',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('scope', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('thread_id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('messages', sa.JSON().with_variant(postgresql.JSONB(astext_type=sa.Text()), 'postgresql'), server_default='[]', nullable=False),
+    sa.Column('state', sa.JSON().with_variant(postgresql.JSONB(astext_type=sa.Text()), 'postgresql'), nullable=True),
+    sa.Column('interrupt', sa.JSON().with_variant(postgresql.JSONB(astext_type=sa.Text()), 'postgresql'), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('scope', 'thread_id')
+    )
+    op.create_index(op.f('ix_chatthreadsnapshot_scope'), 'chatthreadsnapshot', ['scope'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_chatthreadsnapshot_scope'), table_name='chatthreadsnapshot')
+    op.drop_table('chatthreadsnapshot')
+    # ### end Alembic commands ###

backend/alembic/versions/86104b4ff6ae_record_chat_client_details.py

@@ -0,0 +1,37 @@
+"""record chat client details
+
+Revision ID: 86104b4ff6ae
+Revises: 10f4a4f71964
+Create Date: 2026-07-14 22:54:55.519380
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+
+# revision identifiers, used by Alembic.
+revision: str = '86104b4ff6ae'
+down_revision: Union[str, Sequence[str], None] = '10f4a4f71964'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('chatrunlog', sa.Column('client_ip', sa.Text(), nullable=True))
+    op.add_column('chatrunlog', sa.Column('user_agent', sa.Text(), nullable=True))
+    op.add_column('chatrunlog', sa.Column('browser', sa.Text(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('chatrunlog', 'browser')
+    op.drop_column('chatrunlog', 'user_agent')
+    op.drop_column('chatrunlog', 'client_ip')
+    # ### end Alembic commands ###

backend/alembic/versions/961802a2f50d_installment_plans_tasa_cero.py

@@ -0,0 +1,55 @@
+"""installment plans (tasa cero)
+
+Revision ID: 961802a2f50d
+Revises: 7884505b16b3
+Create Date: 2026-07-03 16:00:55.026771
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+from sqlalchemy.dialects import postgresql
+
+
+# revision identifiers, used by Alembic.
+revision: str = '961802a2f50d'
+down_revision: Union[str, Sequence[str], None] = '7884505b16b3'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('installmentplan',
+    sa.Column('num_installments', sa.Integer(), nullable=False),
+    sa.Column('first_installment_date', sa.DateTime(), nullable=False),
+    sa.Column('total_amount', sa.Numeric(precision=15, scale=2), nullable=False),
+    sa.Column('installment_amount', sa.Numeric(precision=15, scale=2), nullable=False),
+    # Reuse the existing 'currency' enum type — do NOT re-create it.
+    sa.Column('currency', postgresql.ENUM('CRC', 'USD', 'EUR', 'BTC', 'XMR', name='currency', create_type=False), nullable=False),
+    sa.Column('notes', sqlmodel.sql.sqltypes.AutoString(), nullable=True),
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('anchor_transaction_id', sa.Integer(), nullable=False),
+    sa.Column('created_at', sa.DateTime(), nullable=False),
+    sa.ForeignKeyConstraint(['anchor_transaction_id'], ['transaction.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_installmentplan_anchor_transaction_id'), 'installmentplan', ['anchor_transaction_id'], unique=True)
+    op.add_column('transaction', sa.Column('installment_plan_id', sa.Integer(), nullable=True))
+    op.add_column('transaction', sa.Column('is_installment_anchor', sa.Boolean(), server_default='false', nullable=False))
+    op.create_index(op.f('ix_transaction_installment_plan_id'), 'transaction', ['installment_plan_id'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_transaction_installment_plan_id'), table_name='transaction')
+    op.drop_column('transaction', 'is_installment_anchor')
+    op.drop_column('transaction', 'installment_plan_id')
+    op.drop_index(op.f('ix_installmentplan_anchor_transaction_id'), table_name='installmentplan')
+    op.drop_table('installmentplan')
+    # ### end Alembic commands ###

backend/alembic/versions/ecb99a158fbf_add_chat_run_audit_logs.py

@@ -0,0 +1,58 @@
+"""add chat run audit logs
+
+Revision ID: ecb99a158fbf
+Revises: 794baf50635b
+Create Date: 2026-07-14 22:22:06.035643
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = 'ecb99a158fbf'
+down_revision: Union[str, Sequence[str], None] = '794baf50635b'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('chatrunlog',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('request_id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('requested_thread_id', sqlmodel.sql.sqltypes.AutoString(), nullable=True),
+    sa.Column('response_thread_id', sqlmodel.sql.sqltypes.AutoString(), nullable=True),
+    sa.Column('model', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('user_prompt', sa.Text(), nullable=True),
+    sa.Column('tool_calls', sa.JSON().with_variant(postgresql.JSONB(astext_type=sa.Text()), 'postgresql'), server_default='[]', nullable=False),
+    sa.Column('assistant_response', sa.Text(), nullable=True),
+    sa.Column('status', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('error', sa.Text(), nullable=True),
+    sa.Column('started_at', sa.DateTime(), nullable=False),
+    sa.Column('completed_at', sa.DateTime(), nullable=True),
+    sa.Column('expires_at', sa.DateTime(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_chatrunlog_expires_at'), 'chatrunlog', ['expires_at'], unique=False)
+    op.create_index(op.f('ix_chatrunlog_request_id'), 'chatrunlog', ['request_id'], unique=True)
+    op.create_index(op.f('ix_chatrunlog_requested_thread_id'), 'chatrunlog', ['requested_thread_id'], unique=False)
+    op.create_index(op.f('ix_chatrunlog_response_thread_id'), 'chatrunlog', ['response_thread_id'], unique=False)
+    op.create_index(op.f('ix_chatrunlog_status'), 'chatrunlog', ['status'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_chatrunlog_status'), table_name='chatrunlog')
+    op.drop_index(op.f('ix_chatrunlog_response_thread_id'), table_name='chatrunlog')
+    op.drop_index(op.f('ix_chatrunlog_requested_thread_id'), table_name='chatrunlog')
+    op.drop_index(op.f('ix_chatrunlog_request_id'), table_name='chatrunlog')
+    op.drop_index(op.f('ix_chatrunlog_expires_at'), table_name='chatrunlog')
+    op.drop_table('chatrunlog')
+    # ### end Alembic commands ###

backend/app/agent/agent.py

@@ -2,10 +2,8 @@
 
 from __future__ import annotations
 
-from datetime import date
-
 from agent_framework import Agent
-from agent_framework.openai import OpenAIChatCompletionClient
+from agent_framework.openai import OpenAIChatClient
 
 from app.config import settings
 from app.agent.tools import TOOLS
@@ -22,19 +20,46 @@ Context you can rely on:
   following month. When the user says "this month" or "last month" without
   qualifiers, assume they mean the calendar month unless they mention
   "cycle", "corte", or their credit card.
-- Today's date is {today}. Use it when the user says "this month", "last
+- You do NOT have a reliable clock, and the server runs in UTC while the
-  month", "last year", etc.
+  user may be anywhere (their browser reports their timezone per request).
+  Whenever the question involves a relative date — "hoy", "ayer", "este
+  mes", "este ciclo", "el año pasado" — call get_current_date FIRST and
+  derive ranges from its answer.
 - Amounts are stored as raw numbers in their native currency (see `currency`
   field on transactions/accounts). Tools that return `total_crc` are already
   converted; tools that return per-transaction amounts are NOT.
 
 How to answer:
 - ALWAYS call a tool to get data. Do not invent balances, dates or merchants.
+- Match the tool to the question's time grain: day-scoped questions ("hoy",
+  "ayer", "el martes", a specific date) need get_daily_spending with that
+  day's bounds — cycle or category summaries have NO per-day data, so never
+  answer a day question from them.
+- For a question about a specific salary deposit or its amount (including
+  "cuánto recibí hoy"), call get_salary_deposits with the relevant date range;
+  get_salary_summary is aggregate-only and cannot answer it.
+- Answer like an analyst, not a calculator. An aggregate number on its own
+  is not an answer — show what it is made of, right away, without waiting
+  to be asked:
+  · saldo neto / net worth → headline, then the assets-vs-liabilities
+    split and the accounts behind each side (get_accounts + get_net_worth).
+  · "cuánto gasté hoy/ayer/el martes" → the total, then the purchases
+    behind it (get_recent_transactions with the same date bounds:
+    merchant, amount, source).
+  · cycle or category totals → the top components and how much each
+    contributes.
+- Structure: one headline sentence with the number, a compact markdown
+  table with the breakdown, and — only when the data genuinely supports
+  it — one closing observation (an unusually large item, a comparison to
+  the previous day/cycle). Never pad with filler or generic offers like
+  "si quieres te puedo mostrar…" when you could just show it.
 - Call multiple tools in parallel when the question spans domains
   (e.g. net worth + recent transactions).
 - Format currency with the appropriate symbol: ₡ for CRC (no decimals), $ for
   USD (two decimals), € for EUR (two decimals).
-- When showing lists, prefer markdown tables over prose.
+- When showing lists or structured data (transactions, breakdowns, funds),
+  format them as clean markdown tables: right-align amounts, include a total
+  row when summing, keep merchant names as-is.
 - If a tool returns no data, say so explicitly — do not fill in zeros.
 - You are read-only in this version. If asked to create, edit or delete
   anything, explain that write actions aren't available yet and offer to
@@ -47,28 +72,32 @@ Generative UI — render tools:
 - When showing spending totals, cycle summaries, or category breakdowns →
   call render_spending_summary. Source data: get_cycle_summary (by_source,
   grand_total_crc) + get_analytics_by_category (by_category).
-- When showing transaction lists or other structured data →
+- Do NOT use markdown tables for data render_spending_summary can display.
-  call render_a2ui in a SEPARATE tool-call step, only after all data-fetching
+- CRITICAL RULE: When you call render_spending_summary, that tool call MUST
-  calls have returned. NEVER call render_a2ui in the same batch as any other
+  be the ONLY content in your message. Do NOT include any text content
-  tool.
+  alongside the tool call — no introduction, no list, no explanation,
-- Do NOT use markdown tables for data a render tool can display.
+  nothing. The rendered card IS the complete response. Any text you write in
-- CRITICAL RULE: When you call a render tool (render_spending_summary or
+  the same message as a render call will appear as a duplicate below the
-  render_a2ui), that tool call MUST be the ONLY content in your message.
+  card, which is wrong.
-  Do NOT include any text content alongside the tool call — no introduction,
+- When a render_spending_summary tool result ("ok") is already present for
-  no list, no explanation, nothing. The rendered card IS the complete
+  the current question, the card is already on screen. Do NOT call the tool
-  response. Any text you write in the same message as a render call will
+  again and do NOT add text — end your response with no further output.
-  appear as a duplicate below the card, which is wrong.
 """
 
 
 def build_agent() -> Agent:
-    client = OpenAIChatCompletionClient(
+    # Use the Responses API for every configured model. It preserves one tool
+    # transport across model changes and supports Luna's tool-result turns.
+    client = OpenAIChatClient(
         api_key=settings.OPENAI_API_KEY,
         model=settings.AGENT_MODEL,
     )
     return Agent(
         name="wealthysmart",
-        instructions=SYSTEM_PROMPT.replace("{today}", date.today().isoformat()),
+        # No date baked in: build_agent() runs once at startup, so anything
+        # substituted here freezes at boot (and in server-UTC). The model
+        # gets "today" from the get_current_date tool instead.
+        instructions=SYSTEM_PROMPT,
         client=client,
         tools=TOOLS,
     )

backend/app/agent/chat_audit.py

@@ -0,0 +1,153 @@
+"""Durable diagnostics for individual AG-UI agent runs."""
+
+from __future__ import annotations
+
+import asyncio
+import contextvars
+from datetime import timedelta
+from typing import Any
+
+from sqlmodel import Session, delete, select
+
+from app.config import settings
+from app.db import engine
+from app.models.models import ChatRunLog
+from app.timeutil import utcnow
+
+
+CHAT_LOG_RETENTION_DAYS = 90
+_chat_run_id: contextvars.ContextVar[int | None] = contextvars.ContextVar(
+    "chat_run_id", default=None
+)
+
+
+def set_current_chat_run(run_id: int) -> contextvars.Token:
+    return _chat_run_id.set(run_id)
+
+
+def reset_current_chat_run(token: contextvars.Token) -> None:
+    _chat_run_id.reset(token)
+
+
+def current_chat_run_id() -> int | None:
+    return _chat_run_id.get()
+
+
+def _last_user_prompt(messages: list[dict[str, Any]]) -> str | None:
+    for message in reversed(messages):
+        if message.get("role") == "user" and isinstance(message.get("content"), str):
+            return message["content"]
+    return None
+
+
+def create_chat_run(
+    *,
+    request_id: str,
+    agui_run_id: str | None,
+    thread_id: str | None,
+    messages: list[dict[str, Any]],
+    client_ip: str | None = None,
+    user_agent: str | None = None,
+    browser: str | None = None,
+) -> int:
+    now = utcnow()
+    with Session(engine) as session:
+        row = ChatRunLog(
+            request_id=request_id,
+            agui_run_id=agui_run_id,
+            requested_thread_id=thread_id,
+            model=settings.AGENT_MODEL,
+            client_ip=client_ip,
+            user_agent=user_agent,
+            browser=browser,
+            user_prompt=_last_user_prompt(messages),
+            expires_at=now + timedelta(days=CHAT_LOG_RETENTION_DAYS),
+        )
+        session.add(row)
+        session.commit()
+        session.refresh(row)
+        assert row.id is not None
+        return row.id
+
+
+def _tool_activity(messages: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    calls: dict[str, dict[str, Any]] = {}
+    order: list[str] = []
+    for message in messages:
+        if message.get("role") == "assistant":
+            for call in message.get("toolCalls") or message.get("tool_calls") or []:
+                call_id = str(call.get("id") or "")
+                if not call_id or call_id in calls:
+                    continue
+                function = call.get("function") or {}
+                calls[call_id] = {
+                    "id": call_id,
+                    "name": function.get("name"),
+                    "arguments": function.get("arguments"),
+                }
+                order.append(call_id)
+        elif message.get("role") == "tool":
+            call_id = str(message.get("toolCallId") or message.get("tool_call_id") or "")
+            if call_id in calls:
+                calls[call_id]["result"] = message.get("content")
+                if message.get("error") is not None:
+                    calls[call_id]["error"] = message["error"]
+    return [calls[call_id] for call_id in order]
+
+
+def _last_assistant_response(messages: list[dict[str, Any]]) -> str | None:
+    for message in reversed(messages):
+        if message.get("role") == "assistant" and isinstance(message.get("content"), str):
+            return message["content"]
+    return None
+
+
+def finalize_chat_run_in_session(
+    session: Session, *, run_id: int, response_thread_id: str, messages: list[dict[str, Any]]
+) -> None:
+    row = session.get(ChatRunLog, run_id)
+    if row is None:
+        return
+    row.response_thread_id = response_thread_id
+    row.tool_calls = _tool_activity(messages)
+    row.assistant_response = _last_assistant_response(messages)
+    row.status = "completed"
+    row.completed_at = utcnow()
+    session.add(row)
+
+
+def mark_chat_run_failed(run_id: int, error: str) -> None:
+    with Session(engine) as session:
+        row = session.get(ChatRunLog, run_id)
+        if row is None or row.status == "completed":
+            return
+        row.status = "failed"
+        row.error = error[:4000]
+        row.completed_at = utcnow()
+        session.add(row)
+        session.commit()
+
+
+def finish_pending_chat_run(run_id: int) -> None:
+    with Session(engine) as session:
+        row = session.get(ChatRunLog, run_id)
+        if row is None or row.status != "started":
+            return
+        row.status = "completed"
+        row.completed_at = utcnow()
+        session.add(row)
+        session.commit()
+
+
+def purge_expired_chat_runs() -> int:
+    with Session(engine) as session:
+        result = session.exec(delete(ChatRunLog).where(ChatRunLog.expires_at < utcnow()))
+        session.commit()
+        return result.rowcount or 0
+
+
+async def purge_expired_chat_runs_periodically() -> None:
+    """Purge at startup and then once per day for a bounded audit footprint."""
+    while True:
+        await asyncio.to_thread(purge_expired_chat_runs)
+        await asyncio.sleep(24 * 60 * 60)

backend/app/agent/snapshot_store.py

@@ -0,0 +1,194 @@
+"""Postgres-backed AG-UI thread snapshot store.
+
+Implements the AGUIThreadSnapshotStore protocol from agent-framework-ag-ui so
+the assistant conversation survives page reloads: MAF calls `save` with the
+full cumulative message list at each run end, and `get` on the next request
+(server-side context rebuild, or a client hydration run with empty messages).
+
+Two deliberate choices:
+- Own sessions per call: MAF saves during SSE streaming, after the
+  agent_auth_and_session middleware has already closed the request-bound
+  ContextVar session. Sync SQLModel work runs in a thread so the event loop
+  keeps streaming.
+- `save` normalizes assistant `tool_calls` -> `toolCalls`: @ag-ui/client's
+  Zod schema silently strips the snake_case field, so a replayed snapshot
+  would lose tool calls (and the spending-summary card) on the way to the
+  browser. MAF reads both casings back, so storing camelCase is safe.
+"""
+
+from __future__ import annotations
+
+import asyncio
+from typing import Any
+
+from agent_framework_ag_ui import AGUIThreadSnapshot
+from sqlmodel import Session, select
+
+from app.db import engine
+from app.agent.chat_audit import current_chat_run_id, finalize_chat_run_in_session
+from app.models.models import ChatThreadSnapshot
+from app.timeutil import utcnow
+
+
+def _normalize_message(msg: dict[str, Any]) -> dict[str, Any]:
+    out = dict(msg)
+    tool_calls = out.pop("tool_calls", None)
+    if tool_calls is None:
+        tool_calls = out.pop("toolCalls", None)
+    else:
+        out.pop("toolCalls", None)
+    # MAF writes tool_calls: null on plain-text assistant messages; only a
+    # non-empty list is meaningful downstream.
+    if isinstance(tool_calls, list) and tool_calls:
+        out["toolCalls"] = tool_calls
+    if "tool_call_id" in out:
+        out.setdefault("toolCallId", out["tool_call_id"])
+        del out["tool_call_id"]
+    return out
+
+
+def _clean_messages(messages: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    """Sanitize the cumulative snapshot before storing it.
+
+    MAF's history merge re-records the resent suffix of multi-run turns
+    (frontend-tool roundtrips) without deduplicating, and the model
+    occasionally re-issues an identical render tool call on the follow-up
+    run. Left as-is, the snapshot grows duplicates that replay as repeated
+    bubbles/cards after a reload.
+    """
+    # Pass 1: drop BFF-injected ctx-* system messages, duplicate message
+    # ids, and repeated identical tool calls (same function + arguments)
+    # within one user turn.
+    seen_ids: set[str] = set()
+    turn_calls: set[tuple[Any, Any]] = set()
+    kept_call_ids: set[str] = set()
+    first_pass: list[dict[str, Any]] = []
+    for raw in messages:
+        m = _normalize_message(raw)
+        mid = str(m.get("id", ""))
+        if mid.startswith("ctx-"):
+            continue
+        if mid and mid in seen_ids:
+            continue
+        role = m.get("role")
+        if role == "user":
+            turn_calls = set()
+        if role == "assistant" and isinstance(m.get("toolCalls"), list):
+            kept: list[dict[str, Any]] = []
+            for tc in m["toolCalls"]:
+                fn = tc.get("function") or {}
+                key = (fn.get("name"), fn.get("arguments"))
+                if key in turn_calls:
+                    continue
+                turn_calls.add(key)
+                kept.append(tc)
+                if tc.get("id"):
+                    kept_call_ids.add(str(tc["id"]))
+            if kept:
+                m["toolCalls"] = kept
+            else:
+                m.pop("toolCalls", None)
+                if not m.get("content"):
+                    continue  # nothing left worth replaying
+        if mid:
+            seen_ids.add(mid)
+        first_pass.append(m)
+
+    # Pass 2: one tool result per surviving call id. Results whose call was
+    # deduplicated away must go too — an orphan tool message in the stored
+    # history would 400 the next OpenAI request when MAF rebuilds context.
+    answered: set[str] = set()
+    out: list[dict[str, Any]] = []
+    for m in first_pass:
+        if m.get("role") == "tool":
+            tcid = str(m.get("toolCallId") or "")
+            if tcid and (tcid not in kept_call_ids or tcid in answered):
+                continue
+            if tcid:
+                answered.add(tcid)
+        out.append(m)
+    return out
+
+
+class PostgresSnapshotStore:
+    """One upserted row per (scope, thread_id); latest snapshot only."""
+
+    async def save(
+        self, *, scope: str, thread_id: str, snapshot: AGUIThreadSnapshot
+    ) -> None:
+        def _save() -> None:
+            with Session(engine) as session:
+                row = session.exec(
+                    select(ChatThreadSnapshot).where(
+                        ChatThreadSnapshot.scope == scope,
+                        ChatThreadSnapshot.thread_id == thread_id,
+                    )
+                ).first()
+                if row is None:
+                    row = ChatThreadSnapshot(scope=scope, thread_id=thread_id)
+                row.messages = _clean_messages(snapshot.messages)
+                row.state = snapshot.state
+                row.interrupt = snapshot.interrupt
+                row.updated_at = utcnow()
+                session.add(row)
+                run_id = current_chat_run_id()
+                if run_id is not None:
+                    finalize_chat_run_in_session(
+                        session,
+                        run_id=run_id,
+                        response_thread_id=thread_id,
+                        messages=row.messages,
+                    )
+                session.commit()
+
+        await asyncio.to_thread(_save)
+
+    async def get(
+        self, *, scope: str, thread_id: str
+    ) -> AGUIThreadSnapshot | None:
+        def _get() -> AGUIThreadSnapshot | None:
+            with Session(engine) as session:
+                row = session.exec(
+                    select(ChatThreadSnapshot).where(
+                        ChatThreadSnapshot.scope == scope,
+                        ChatThreadSnapshot.thread_id == thread_id,
+                    )
+                ).first()
+                if row is None:
+                    return None
+                return AGUIThreadSnapshot(
+                    messages=row.messages or [],
+                    state=row.state,
+                    interrupt=row.interrupt,
+                )
+
+        return await asyncio.to_thread(_get)
+
+    async def delete(self, *, scope: str, thread_id: str) -> bool:
+        def _delete() -> bool:
+            with Session(engine) as session:
+                row = session.exec(
+                    select(ChatThreadSnapshot).where(
+                        ChatThreadSnapshot.scope == scope,
+                        ChatThreadSnapshot.thread_id == thread_id,
+                    )
+                ).first()
+                if row is None:
+                    return False
+                session.delete(row)
+                session.commit()
+                return True
+
+        return await asyncio.to_thread(_delete)
+
+    async def clear(self, *, scope: str | None = None) -> None:
+        def _clear() -> None:
+            with Session(engine) as session:
+                stmt = select(ChatThreadSnapshot)
+                if scope is not None:
+                    stmt = stmt.where(ChatThreadSnapshot.scope == scope)
+                for row in session.exec(stmt).all():
+                    session.delete(row)
+                session.commit()
+
+        await asyncio.to_thread(_clear)

backend/app/agent/tools.py

@@ -13,7 +13,7 @@ write tool requires an explicit user-confirmation step in the UI.
 from __future__ import annotations
 
 import contextvars
-from datetime import datetime
+from datetime import datetime, time, timedelta
 from typing import Annotated, Optional
 
 from pydantic import Field
@@ -35,17 +35,20 @@ from app.models.models import (
 from app.services.budget_projection import (
     MAX_YEAR,
     MIN_YEAR,
+    NOT_INSTALLMENT_ANCHOR,
     compute_monthly_projection,
     compute_yearly_projection_with_cumulative,
     get_cycle_range,
 )
 from app.services import exchange_rate as fx
+from app.timeutil import client_tz, today_client
 from app.services.exchange_rate import (
     get_converted_amount_expr,
     get_current_rate,
 )
 
 _session_ctx: contextvars.ContextVar[Session] = contextvars.ContextVar("agent_session")
+SALARY_TRANSACTION_TYPES = (TransactionType.SALARY, TransactionType.DEPOSITO)
 
 
 def set_session(session: Session) -> contextvars.Token:
@@ -140,7 +143,11 @@ def get_recent_transactions(
     q = select(Transaction).where(
         col(Transaction.transaction_type).notin_(
             [TransactionType.SALARY, TransactionType.DEPOSITO]
-        )
+        ),
+        # Tasa Cero generates future-dated cuotas; "recent" means already
+        # billed (same rule as /transactions/recent). Bound is end of the
+        # user's today in their request timezone (CR fallback).
+        Transaction.date < datetime.combine(today_client() + timedelta(days=1), time.min),
     )
     if source:
         q = q.where(Transaction.source == TransactionSource(source))
@@ -333,7 +340,7 @@ def get_salary_summary() -> dict:
             func.count(),
             func.coalesce(func.sum(amount_crc), 0),
             func.max(Transaction.date),
-        ).where(Transaction.transaction_type == TransactionType.SALARY)
+        ).where(col(Transaction.transaction_type).in_(SALARY_TRANSACTION_TYPES))
     ).first()
     count = row[0] if row else 0
     total = float(row[1]) if row else 0.0
@@ -341,6 +348,44 @@ def get_salary_summary() -> dict:
     return {"count": count, "total_crc": total, "latest_date": latest}
 
 
+def get_salary_deposits(
+    limit: Annotated[int, Field(ge=1, le=100, description="How many deposits to return")] = 20,
+    start_date: Annotated[
+        Optional[str], Field(description="ISO date lower bound, inclusive")
+    ] = None,
+    end_date: Annotated[
+        Optional[str], Field(description="ISO date upper bound, exclusive")
+    ] = None,
+) -> list[dict]:
+    """Individual salary deposits, newest first. Use this for questions about
+    a specific salary or a day/range (for example, "cuánto recibí hoy").
+    Amounts remain in their recorded currency; use the currency field when
+    presenting them."""
+    q = select(Transaction).where(
+        col(Transaction.transaction_type).in_(SALARY_TRANSACTION_TYPES)
+    )
+    if start_date:
+        q = q.where(Transaction.date >= datetime.fromisoformat(start_date))
+    if end_date:
+        q = q.where(Transaction.date < datetime.fromisoformat(end_date))
+    q = q.order_by(col(Transaction.date).desc(), col(Transaction.id).desc()).limit(limit)
+    return [
+        {
+            "id": t.id,
+            "date": t.date.isoformat(),
+            "amount": float(t.amount),
+            "currency": t.currency.value,
+            "merchant": t.merchant,
+            "source": t.source.value,
+            "bank": t.bank.value,
+            "transaction_type": t.transaction_type.value,
+            "reference": t.reference,
+            "notes": t.notes,
+        }
+        for t in _s().exec(q).all()
+    ]
+
+
 def get_municipal_receipts(
     limit: Annotated[int, Field(ge=1, le=50)] = 12,
     offset: Annotated[int, Field(ge=0, description="Skip the N most recent")] = 0,
@@ -491,7 +536,68 @@ def list_categories() -> list[dict]:
 
 
 # Registered with the agent in agent.py
+def get_daily_spending(
+    start_date: Annotated[str, Field(description="ISO date lower bound, inclusive")],
+    end_date: Annotated[str, Field(description="ISO date upper bound, exclusive")],
+) -> list[dict]:
+    """Spending per day in CRC (converted), COMPRA only, excluding future
+    Tasa Cero cuotas and installment anchors. THE tool for day-scoped
+    questions: 'cuánto gasté hoy / ayer / el martes'. Days with no spending
+    are simply absent from the result."""
+    session = _s()
+    amount_crc = get_converted_amount_expr(session)
+    rows = session.exec(
+        select(
+            func.date(Transaction.date).label("day"),
+            func.coalesce(func.sum(amount_crc), 0),
+            func.count(),
+        )
+        .where(
+            Transaction.transaction_type == TransactionType.COMPRA,
+            NOT_INSTALLMENT_ANCHOR,
+            Transaction.date >= datetime.fromisoformat(start_date),
+            Transaction.date < datetime.fromisoformat(end_date),
+            # Future-dated Tasa Cero cuotas are not money already spent.
+            Transaction.date < datetime.combine(today_client() + timedelta(days=1), time.min),
+        )
+        .group_by(func.date(Transaction.date))
+        .order_by(func.date(Transaction.date))
+    ).all()
+    return [
+        {"date": str(day), "total_crc": float(total), "count": count}
+        for day, total, count in rows
+    ]
+
+
+def get_current_date() -> dict:
+    """Today's date in the user's own timezone (sent by their browser;
+    Costa Rica fallback) and the active credit-card billing cycle. ALWAYS
+    call this before resolving any relative date reference — 'hoy', 'ayer',
+    'este mes', 'este ciclo', 'el ciclo pasado' — the server clock and your
+    own assumptions about today are unreliable."""
+    today = today_client()
+    # get_cycle_range(y, m) is the cycle STARTING on the 18th of m; before
+    # the 18th we are still in the cycle that started last month.
+    if today.day >= 18:
+        cycle_year, cycle_month = today.year, today.month
+    elif today.month == 1:
+        cycle_year, cycle_month = today.year - 1, 12
+    else:
+        cycle_year, cycle_month = today.year, today.month - 1
+    start, end = get_cycle_range(cycle_year, cycle_month)
+    return {
+        "date": today.isoformat(),
+        "weekday": today.strftime("%A"),
+        "timezone": str(client_tz()),
+        "cycle_year": cycle_year,
+        "cycle_month": cycle_month,
+        "cycle_range": [start.date().isoformat(), end.date().isoformat()],
+    }
+
+
 TOOLS = [
+    get_current_date,
+    get_daily_spending,
     get_accounts,
     get_net_worth,
     get_recent_transactions,
@@ -500,6 +606,7 @@ TOOLS = [
     list_recurring_items,
     get_pension_snapshots,
     get_salary_summary,
+    get_salary_deposits,
     get_municipal_receipts,
     get_analytics_by_category,
     get_monthly_trend,

backend/app/api/v1/endpoints/analytics.py

@@ -9,7 +9,8 @@ from sqlmodel import Session, func, select
 from app.auth import get_current_user
 from app.db import get_session
 from app.models.models import Category, Transaction, TransactionType
-from app.services.budget_projection import get_cycle_range
+from app.services.budget_projection import NOT_INSTALLMENT_ANCHOR, get_cycle_range
+from app.timeutil import utcnow
 from app.services.exchange_rate import get_converted_amount_expr
 
 router = APIRouter(prefix="/analytics", tags=["analytics"])
@@ -42,6 +43,8 @@ class DailySpending(BaseModel):
 def spending_by_category(
     cycle_year: Optional[int] = None,
     cycle_month: Optional[int] = None,
+    start_date: Optional[str] = None,
+    end_date: Optional[str] = None,
     session: Session = Depends(get_session),
     _user: str = Depends(get_current_user),
 ):
@@ -53,17 +56,26 @@ def spending_by_category(
             func.sum(amount_crc).label("total"),
             func.count().label("count"),
         )
-        .where(Transaction.transaction_type == TransactionType.COMPRA)
+        .where(
+            Transaction.transaction_type == TransactionType.COMPRA,
+            NOT_INSTALLMENT_ANCHOR,
+        )
         .group_by(Transaction.category_id)
     )
 
-    if cycle_year and cycle_month:
+    # Arbitrary date range takes precedence over the cycle filter.
+    if start_date and end_date:
+        query = query.where(
+            Transaction.date >= datetime.fromisoformat(start_date),
+            Transaction.date < datetime.fromisoformat(end_date),
+        )
+    elif cycle_year and cycle_month:
         start, end = get_cycle_range(cycle_year, cycle_month)
         query = query.where(Transaction.date >= start, Transaction.date < end)
 
     rows = session.exec(query).all()
 
-    grand_total = sum(r[1] for r in rows) or 1
+    grand_total = float(sum(float(r[1]) for r in rows)) or 1.0
 
     results = []
     for category_id, total, count in rows:
@@ -126,6 +138,7 @@ def monthly_trend(
                 Transaction.transaction_type == TransactionType.COMPRA,
                 Transaction.date >= start,
                 Transaction.date < end,
+                NOT_INSTALLMENT_ANCHOR,
             )
         ).first()
 
@@ -160,6 +173,8 @@ def monthly_trend(
 def daily_spending(
     cycle_year: Optional[int] = None,
     cycle_month: Optional[int] = None,
+    start_date: Optional[str] = None,
+    end_date: Optional[str] = None,
     session: Session = Depends(get_session),
     _user: str = Depends(get_current_user),
 ):
@@ -171,12 +186,23 @@ def daily_spending(
             func.sum(amount_crc).label("total"),
             func.count().label("count"),
         )
-        .where(Transaction.transaction_type == TransactionType.COMPRA)
+        .where(
+            Transaction.transaction_type == TransactionType.COMPRA,
+            NOT_INSTALLMENT_ANCHOR,
+            # Tasa Cero generates future-dated cuotas; daily spending is
+            # about money already spent.
+            Transaction.date <= utcnow(),
+        )
         .group_by(func.date(Transaction.date))
         .order_by(func.date(Transaction.date))
     )
 
-    if cycle_year and cycle_month:
+    if start_date and end_date:
+        query = query.where(
+            Transaction.date >= datetime.fromisoformat(start_date),
+            Transaction.date < datetime.fromisoformat(end_date),
+        )
+    elif cycle_year and cycle_month:
         start, end = get_cycle_range(cycle_year, cycle_month)
         query = query.where(Transaction.date >= start, Transaction.date < end)
 

backend/app/api/v1/endpoints/chat.py

@@ -0,0 +1,41 @@
+"""Assistant chat thread management.
+
+The conversation itself is persisted by the AG-UI snapshot store
+(app/agent/snapshot_store.py) under a single ("default", "main") thread;
+this router only exposes the reset used by "Nueva conversación".
+"""
+
+from fastapi import APIRouter, Depends
+from pydantic import BaseModel
+from sqlmodel import Session, select
+
+from app.auth import get_current_user
+from app.db import get_session
+from app.models.models import ChatThreadSnapshot
+
+router = APIRouter(prefix="/chat", tags=["chat"])
+
+CHAT_SCOPE = "default"
+CHAT_THREAD_ID = "main"
+
+
+class ClearThreadResponse(BaseModel):
+    cleared: bool
+
+
+@router.delete("/thread", response_model=ClearThreadResponse)
+def clear_thread(
+    session: Session = Depends(get_session),
+    _user: str = Depends(get_current_user),
+):
+    row = session.exec(
+        select(ChatThreadSnapshot).where(
+            ChatThreadSnapshot.scope == CHAT_SCOPE,
+            ChatThreadSnapshot.thread_id == CHAT_THREAD_ID,
+        )
+    ).first()
+    if row is None:
+        return {"cleared": False}
+    session.delete(row)
+    session.commit()
+    return {"cleared": True}

backend/app/api/v1/endpoints/installments.py

@@ -0,0 +1,234 @@
+from datetime import datetime
+from typing import Optional
+
+from fastapi import APIRouter, Depends, HTTPException
+from pydantic import BaseModel
+from sqlmodel import Session, col, select
+
+from app.auth import get_current_user
+from app.db import get_session
+from app.models.models import (
+    InstallmentPlan,
+    InstallmentPlanCreate,
+    InstallmentPlanUpdate,
+    Transaction,
+    TransactionRead,
+    TransactionSource,
+    TransactionType,
+)
+from app.services.installments import (
+    compute_installment_amounts,
+    create_plan,
+    delete_plan,
+    regenerate_cuotas,
+)
+from app.timeutil import utcnow
+
+router = APIRouter(prefix="/installment-plans", tags=["installments"])
+
+MIN_INSTALLMENTS = 2
+MAX_INSTALLMENTS = 48
+
+
+class InstallmentPlanRead(BaseModel):
+    id: int
+    anchor_transaction_id: int
+    merchant: str
+    purchase_date: datetime
+    num_installments: int
+    first_installment_date: datetime
+    total_amount: float
+    installment_amount: float
+    last_installment_amount: float
+    currency: str
+    notes: Optional[str] = None
+    cuotas_billed: int
+    paid_amount: float
+    remaining_amount: float
+    next_cuota_date: Optional[datetime] = None
+    is_completed: bool
+
+
+class InstallmentPlanDetail(InstallmentPlanRead):
+    cuotas: list[TransactionRead] = []
+
+
+class InstallmentPlanListResponse(BaseModel):
+    plans: list[InstallmentPlanRead]
+    total_remaining: float
+
+
+def _validate_num_installments(n: int) -> None:
+    if not MIN_INSTALLMENTS <= n <= MAX_INSTALLMENTS:
+        raise HTTPException(
+            status_code=400,
+            detail=f"num_installments must be {MIN_INSTALLMENTS}-{MAX_INSTALLMENTS}",
+        )
+
+
+def _get_plan_and_anchor(
+    session: Session, plan_id: int
+) -> tuple[InstallmentPlan, Transaction]:
+    plan = session.get(InstallmentPlan, plan_id)
+    if not plan:
+        raise HTTPException(status_code=404, detail="Installment plan not found")
+    anchor = session.get(Transaction, plan.anchor_transaction_id)
+    if not anchor:
+        raise HTTPException(status_code=404, detail="Anchor transaction not found")
+    return plan, anchor
+
+
+def _to_read(
+    plan: InstallmentPlan, anchor: Transaction, cuotas: list[Transaction]
+) -> InstallmentPlanRead:
+    now = utcnow()
+    billed = [c for c in cuotas if c.date <= now]
+    future = [c for c in cuotas if c.date > now]
+    paid = float(sum(c.amount for c in billed))
+    total = float(plan.total_amount)
+    amounts = compute_installment_amounts(
+        plan.total_amount, plan.num_installments
+    )
+    return InstallmentPlanRead(
+        id=plan.id,
+        anchor_transaction_id=plan.anchor_transaction_id,
+        merchant=anchor.merchant,
+        purchase_date=anchor.date,
+        num_installments=plan.num_installments,
+        first_installment_date=plan.first_installment_date,
+        total_amount=total,
+        installment_amount=float(plan.installment_amount),
+        last_installment_amount=float(amounts[-1]),
+        currency=plan.currency.value,
+        notes=plan.notes,
+        cuotas_billed=len(billed),
+        paid_amount=paid,
+        remaining_amount=total - paid,
+        next_cuota_date=min((c.date for c in future), default=None),
+        is_completed=len(billed) == plan.num_installments,
+    )
+
+
+def _cuotas_by_plan(
+    session: Session, plan_ids: list[int]
+) -> dict[int, list[Transaction]]:
+    grouped: dict[int, list[Transaction]] = {pid: [] for pid in plan_ids}
+    if plan_ids:
+        rows = session.exec(
+            select(Transaction)
+            .where(col(Transaction.installment_plan_id).in_(plan_ids))
+            .order_by(col(Transaction.date))
+        ).all()
+        for row in rows:
+            grouped[row.installment_plan_id].append(row)
+    return grouped
+
+
+@router.get("/", response_model=InstallmentPlanListResponse)
+def list_installment_plans(
+    session: Session = Depends(get_session),
+    _user: str = Depends(get_current_user),
+):
+    plans = session.exec(select(InstallmentPlan)).all()
+    anchors = {
+        t.id: t
+        for t in session.exec(
+            select(Transaction).where(
+                col(Transaction.id).in_([p.anchor_transaction_id for p in plans])
+            )
+        ).all()
+    } if plans else {}
+    cuotas = _cuotas_by_plan(session, [p.id for p in plans])
+    reads = [
+        _to_read(p, anchors[p.anchor_transaction_id], cuotas[p.id])
+        for p in plans
+        if p.anchor_transaction_id in anchors
+    ]
+    reads.sort(key=lambda r: r.purchase_date, reverse=True)
+    return InstallmentPlanListResponse(
+        plans=reads,
+        total_remaining=sum(r.remaining_amount for r in reads),
+    )
+
+
+@router.get("/{plan_id}", response_model=InstallmentPlanDetail)
+def get_installment_plan(
+    plan_id: int,
+    session: Session = Depends(get_session),
+    _user: str = Depends(get_current_user),
+):
+    plan, anchor = _get_plan_and_anchor(session, plan_id)
+    cuotas = _cuotas_by_plan(session, [plan.id])[plan.id]
+    read = _to_read(plan, anchor, cuotas)
+    return InstallmentPlanDetail(**read.model_dump(), cuotas=cuotas)
+
+
+@router.post("/", response_model=InstallmentPlanRead, status_code=201)
+def create_installment_plan(
+    data: InstallmentPlanCreate,
+    session: Session = Depends(get_session),
+    _user: str = Depends(get_current_user),
+):
+    """Convert an existing credit-card purchase into a Tasa Cero plan."""
+    _validate_num_installments(data.num_installments)
+    anchor = session.get(Transaction, data.transaction_id)
+    if not anchor:
+        raise HTTPException(status_code=404, detail="Transaction not found")
+    if anchor.source != TransactionSource.CREDIT_CARD:
+        raise HTTPException(
+            status_code=400, detail="Only credit card transactions can be financed"
+        )
+    if anchor.transaction_type != TransactionType.COMPRA:
+        raise HTTPException(
+            status_code=400, detail="Only COMPRA transactions can be financed"
+        )
+    if anchor.installment_plan_id:
+        raise HTTPException(
+            status_code=400, detail="A cuota cannot be converted to a plan"
+        )
+    if anchor.is_installment_anchor:
+        raise HTTPException(
+            status_code=409, detail="Transaction already has an installment plan"
+        )
+    plan = create_plan(
+        session, anchor, data.num_installments, data.first_installment_date
+    )
+    session.commit()
+    session.refresh(plan)
+    cuotas = _cuotas_by_plan(session, [plan.id])[plan.id]
+    return _to_read(plan, anchor, cuotas)
+
+
+@router.patch("/{plan_id}", response_model=InstallmentPlanRead)
+def update_installment_plan(
+    plan_id: int,
+    data: InstallmentPlanUpdate,
+    session: Session = Depends(get_session),
+    _user: str = Depends(get_current_user),
+):
+    """Edit a plan; cuota rows are regenerated (per-cuota edits are lost)."""
+    plan, anchor = _get_plan_and_anchor(session, plan_id)
+    if data.num_installments is not None:
+        _validate_num_installments(data.num_installments)
+    if data.notes is not None:
+        plan.notes = data.notes
+    regenerate_cuotas(
+        session, plan, anchor, data.num_installments, data.first_installment_date
+    )
+    session.commit()
+    session.refresh(plan)
+    cuotas = _cuotas_by_plan(session, [plan.id])[plan.id]
+    return _to_read(plan, anchor, cuotas)
+
+
+@router.delete("/{plan_id}", status_code=204)
+def delete_installment_plan(
+    plan_id: int,
+    session: Session = Depends(get_session),
+    _user: str = Depends(get_current_user),
+):
+    """Unconvert: remove the plan and its cuotas; the anchor becomes a normal
+    transaction again."""
+    plan, anchor = _get_plan_and_anchor(session, plan_id)
+    delete_plan(session, plan, anchor)
+    session.commit()

backend/app/api/v1/endpoints/transactions.py

@@ -21,9 +21,19 @@ from app.models.models import (
     TransactionUpdate,
 )
 
-from app.services.budget_projection import get_cycle_range, get_previous_cycle
+from app.services.budget_projection import (
+    NOT_INSTALLMENT_ANCHOR,
+    get_cycle_range,
+    get_previous_cycle,
+)
 from app.services.csv_export import build_transactions_csv
 from app.services.exchange_rate import get_converted_amount_expr
+from app.services.installments import (
+    DEFAULT_NUM_INSTALLMENTS,
+    create_plan,
+    is_tasa_cero_merchant,
+    teardown_plan_for_anchor,
+)
 
 router = APIRouter(prefix="/transactions", tags=["transactions"])
 
@@ -130,17 +140,22 @@ def bulk_action(
     txs = session.exec(
         select(Transaction).where(col(Transaction.id).in_(req.ids))
     ).all()
+    affected = 0
     for tx in txs:
         if req.action == "delete":
+            teardown_plan_for_anchor(session, tx)
             session.delete(tx)
         elif req.action == "set_category":
             tx.category_id = req.category_id
             session.add(tx)
         elif req.action == "set_deferred":
+            if tx.installment_plan_id:
+                continue  # cuotas of a plan cannot be deferred
             tx.deferred_to_next_cycle = bool(req.deferred)
             session.add(tx)
+        affected += 1
     session.commit()
-    return {"affected": len(txs)}
+    return {"affected": affected}
 
 
 @router.get("/export")
@@ -205,7 +220,9 @@ def list_billing_cycles(
         # Count transactions in this cycle
         count_result = session.exec(
             select(func.count(), func.coalesce(func.sum(amount_crc), 0)).where(
-                Transaction.date >= start, Transaction.date < end
+                Transaction.date >= start,
+                Transaction.date < end,
+                NOT_INSTALLMENT_ANCHOR,
             )
         ).first()
         count = count_result[0] if count_result else 0
@@ -236,9 +253,15 @@ def recent_transactions(
     session: Session = Depends(get_session),
     _user: str = Depends(get_current_user),
 ):
+    from app.timeutil import utcnow
+
     query = (
         select(Transaction)
-        .where(Transaction.source == TransactionSource.CREDIT_CARD)
+        .where(
+            Transaction.source == TransactionSource.CREDIT_CARD,
+            # Tasa Cero generates future-dated cuotas; "recent" means billed.
+            Transaction.date <= utcnow(),
+        )
         .order_by(col(Transaction.date).desc(), col(Transaction.id).desc())
         .limit(limit)
     )
@@ -268,6 +291,20 @@ def create_transaction(
     session.commit()
     session.refresh(tx)
 
+    # Tasa Cero auto-detection: BAC prefixes financed purchases with "CC ".
+    # Default 3 cuotas starting on the purchase date; editable afterwards via
+    # /installment-plans.
+    tasa_cero_note = ""
+    if (
+        tx.source == TransactionSource.CREDIT_CARD
+        and tx.transaction_type == TransactionType.COMPRA
+        and is_tasa_cero_merchant(tx.merchant)
+    ):
+        create_plan(session, tx, DEFAULT_NUM_INSTALLMENTS, tx.date)
+        session.commit()
+        session.refresh(tx)
+        tasa_cero_note = f" — Tasa Cero {DEFAULT_NUM_INSTALLMENTS} cuotas"
+
     # Send push notification
     symbols = {Currency.CRC: "₡", Currency.USD: "$", Currency.EUR: "€"}
     symbol = symbols.get(tx.currency, tx.currency.value)
@@ -278,7 +315,7 @@ def create_transaction(
     send_push_to_all(
         session,
         title=f"{'🏦' if is_income else '💳'} {tx.merchant}",
-        body=f"{amount_str} — {tx.bank.value} {label}",
+        body=f"{amount_str} — {tx.bank.value} {label}{tasa_cero_note}",
         url="/salarios" if is_income else "/budget",
     )
 
@@ -300,6 +337,11 @@ def update_transaction(
     if not tx:
         raise HTTPException(status_code=404, detail="Transaction not found")
     update_data = data.model_dump(exclude_unset=True)
+    if update_data.get("deferred_to_next_cycle") is not None and tx.installment_plan_id:
+        raise HTTPException(
+            status_code=400,
+            detail="Cuotas of an installment plan cannot be deferred",
+        )
     for key, value in update_data.items():
         setattr(tx, key, value)
     session.add(tx)
@@ -317,5 +359,6 @@ def delete_transaction(
     tx = session.get(Transaction, transaction_id)
     if not tx:
         raise HTTPException(status_code=404, detail="Transaction not found")
+    teardown_plan_for_anchor(session, tx)
     session.delete(tx)
     session.commit()

backend/app/api/v1/router.py

@@ -6,8 +6,10 @@ from app.api.v1.endpoints import (
     auth,
     budget,
     categories,
+    chat,
     exchange_rate,
     import_transactions,
+    installments,
     municipal_receipts,
     notifications,
     pensions,
@@ -25,6 +27,7 @@ api_router.include_router(accounts.router)
 api_router.include_router(categories.router)
 api_router.include_router(transactions.router)
 api_router.include_router(import_transactions.router)
+api_router.include_router(installments.router)
 api_router.include_router(exchange_rate.router)
 api_router.include_router(tokens.router)
 api_router.include_router(analytics.router)
@@ -36,3 +39,4 @@ api_router.include_router(pensions.router)
 api_router.include_router(municipal_receipts.router)
 api_router.include_router(savings_accrual.router)
 api_router.include_router(sync_status.router)
+api_router.include_router(chat.router)

backend/app/config.py

@@ -20,7 +20,7 @@ class Settings(BaseSettings):
     VAPID_PUBLIC_KEY: str = ""
     VAPID_CLAIM_EMAIL: str = "mailto:admin@wealth.cescalante.dev"
     OPENAI_API_KEY: str = ""
-    AGENT_MODEL: str = "gpt-5.4-mini"
+    AGENT_MODEL: str = "gpt-5.6-luna"
 
     @property
     def cors_origins_list(self) -> list[str]:

backend/app/logging.py

@@ -0,0 +1,31 @@
+"""Structured, redacted application logging for container stdout."""
+
+from __future__ import annotations
+
+import json
+from datetime import date, datetime
+from enum import Enum
+from typing import Any
+
+
+class _JSONEncoder(json.JSONEncoder):
+    def default(self, value: Any) -> Any:
+        if isinstance(value, (datetime, date)):
+            return value.isoformat()
+        if isinstance(value, Enum):
+            return value.value
+        return super().default(value)
+
+
+def configure_structured_logging() -> None:
+    """Reserved lifecycle hook for the structured stdout audit channel."""
+
+
+def log_event(event: str, **fields: Any) -> None:
+    """Write a single JSON line; callers must not pass credentials or bodies."""
+    # stdout is Docker's durable capture point. `flush=True` also makes this
+    # visible immediately in `docker compose logs` during an active SSE run.
+    print(
+        json.dumps({"event": event, **fields}, cls=_JSONEncoder, separators=(",", ":")),
+        flush=True,
+    )

backend/app/main.py

@@ -1,6 +1,7 @@
 import asyncio
 import json
 import uuid
+from time import perf_counter
 from http.cookies import SimpleCookie
 from contextlib import asynccontextmanager
 
@@ -11,6 +12,15 @@ from jose import JWTError, jwt
 from pydantic import BaseModel
 
 from app.agent.agent import build_agent
+from app.agent.chat_audit import (
+    create_chat_run,
+    finish_pending_chat_run,
+    mark_chat_run_failed,
+    purge_expired_chat_runs_periodically,
+    reset_current_chat_run,
+    set_current_chat_run,
+)
+from app.agent.snapshot_store import PostgresSnapshotStore
 from app.agent.tools import reset_session, set_session
 from app.api.v1.router import api_router
 from app.auth import (
@@ -22,10 +32,47 @@ from app.auth import (
 from app.config import settings
 from app.db import get_session, run_alembic_upgrade
 from app.seed import seed_db
+from app.timeutil import reset_client_timezone, set_client_timezone
 from app.services.exchange_rate import refresh_rates_periodically
+from app.logging import configure_structured_logging, log_event
 
 
 AGENT_PATH = "/api/v1/agent/agui"
+MAX_USER_AGENT_LENGTH = 512
+
+
+def _request_client_details(request: Request) -> tuple[str, str | None, str | None]:
+    """Return the browser client details propagated through the frontend BFF.
+
+    Production nginx-proxy supplies X-Real-IP and the frontend forwards it to
+    FastAPI. For direct local development, fall back to X-Forwarded-For and
+    then the socket peer. The BFF is the only production path to the backend,
+    which is not publicly exposed.
+    """
+    client_ip = request.headers.get("x-real-ip", "").strip()
+    if not client_ip:
+        forwarded = request.headers.get("x-forwarded-for", "")
+        client_ip = forwarded.split(",", 1)[0].strip()
+    if not client_ip:
+        client_ip = request.client.host if request.client else "unknown"
+
+    user_agent = request.headers.get("user-agent", "").strip()[:MAX_USER_AGENT_LENGTH] or None
+    if not user_agent:
+        return client_ip, None, None
+    ua = user_agent.lower()
+    if "edg/" in ua or "edgios/" in ua:
+        browser = "Edge"
+    elif "opr/" in ua or "opera" in ua:
+        browser = "Opera"
+    elif "firefox/" in ua or "fxios/" in ua:
+        browser = "Firefox"
+    elif "chrome/" in ua or "crios/" in ua:
+        browser = "Chrome"
+    elif "safari/" in ua:
+        browser = "Safari"
+    else:
+        browser = "Other"
+    return client_ip, user_agent, browser
 
 
 def _pair_orphan_tool_calls(messages: list) -> list:
@@ -63,19 +110,60 @@ def _pair_orphan_tool_calls(messages: list) -> list:
     return out
 
 
+def _drop_stale_client_history(session, thread_id, messages: list) -> list:
+    """Conversation history is server-owned (the AG-UI snapshot store).
+
+    A request that carries assistant/tool history for a thread with NO
+    stored snapshot comes from a stale client — typically a second tab that
+    was open when 'Nueva conversación' cleared the thread. Trusting it
+    would re-persist the cleared conversation ('chunks' resurrecting after
+    every clear). Keep only the last user turn; MAF starts the thread
+    fresh from there.
+    """
+    if not thread_id or not messages:
+        return messages
+    has_history = any(m.get("role") in ("assistant", "tool") for m in messages)
+    if not has_history:
+        return messages
+    from sqlmodel import select
+
+    from app.models.models import ChatThreadSnapshot
+
+    row = session.exec(
+        select(ChatThreadSnapshot.id).where(
+            ChatThreadSnapshot.thread_id == str(thread_id)
+        )
+    ).first()
+    if row is not None:
+        return messages  # thread exists; history is legitimate
+    last_user = None
+    for i in range(len(messages) - 1, -1, -1):
+        if messages[i].get("role") == "user":
+            last_user = i
+            break
+    return messages[last_user:] if last_user is not None else []
+
+
 @asynccontextmanager
 async def lifespan(app: FastAPI):
+    configure_structured_logging()
     run_alembic_upgrade()
     seed_db()
     rate_refresh_task = asyncio.create_task(refresh_rates_periodically())
+    chat_audit_cleanup_task = asyncio.create_task(purge_expired_chat_runs_periodically())
     try:
         yield
     finally:
         rate_refresh_task.cancel()
+        chat_audit_cleanup_task.cancel()
         try:
             await rate_refresh_task
         except asyncio.CancelledError:
             pass
+        try:
+            await chat_audit_cleanup_task
+        except asyncio.CancelledError:
+            pass
 
 
 app = FastAPI(title="WealthySmart API", version="0.1.0", lifespan=lifespan)
@@ -89,6 +177,67 @@ app.add_middleware(
 )
 
 
+async def log_api_request(request: Request, call_next):
+    """Emit redacted, one-line diagnostics for API requests only.
+
+    This deliberately records no request/response bodies, headers, tokens,
+    passwords, or financial payloads. Full assistant content is retained only
+    in the bounded chat-run audit table.
+    """
+    request_id = uuid.uuid4().hex
+    request.state.request_id = request_id
+    client_ip, user_agent, browser = _request_client_details(request)
+    request.state.client_ip = client_ip
+    request.state.user_agent = user_agent
+    request.state.browser = browser
+    started = perf_counter()
+    status_code = 500
+    is_logged_api = request.url.path.startswith("/api/") and request.url.path != "/api/health"
+
+    def emit(error_type: str | None = None) -> None:
+        if not is_logged_api:
+            return
+        route = request.scope.get("route")
+        log_event(
+            "api_request",
+            request_id=request_id,
+            method=request.method,
+            path=getattr(route, "path", request.url.path),
+            status_code=status_code,
+            duration_ms=round((perf_counter() - started) * 1000, 1),
+            error_type=error_type,
+            client_ip=client_ip,
+            user_agent=user_agent,
+            browser=browser,
+        )
+
+    try:
+        response = await call_next(request)
+        status_code = response.status_code
+        response.headers["X-Request-ID"] = request_id
+        original_iterator = getattr(response, "body_iterator", None)
+        if original_iterator is None:
+            emit()
+            return response
+
+        async def logged_stream():
+            error_type: str | None = None
+            try:
+                async for chunk in original_iterator:
+                    yield chunk
+            except Exception as exc:
+                error_type = type(exc).__name__
+                raise
+            finally:
+                emit(error_type)
+
+        response.body_iterator = logged_stream()
+        return response
+    except Exception as exc:
+        emit(type(exc).__name__)
+        raise
+
+
 @app.middleware("http")
 async def agent_auth_and_session(request: Request, call_next):
     """For the AG-UI route, validate the JWT, repair message history, and
@@ -119,25 +268,94 @@ async def agent_auth_and_session(request: Request, call_next):
     except JWTError:
         return Response(status_code=401, content="Invalid token")
 
+    session_gen = get_session()
+    session = next(session_gen)
+    token_var = set_session(session)
+
+    chat_run_id: int | None = None
     # Repair orphan tool_calls before the MAF agent sees the message history.
     if request.method == "POST" and "application/json" in request.headers.get("content-type", ""):
         raw = await request.body()
         try:
             body = json.loads(raw)
             if isinstance(body.get("messages"), list):
+                body["messages"] = _drop_stale_client_history(
+                    session,
+                    body.get("threadId") or body.get("thread_id"),
+                    body["messages"],
+                )
                 body["messages"] = _pair_orphan_tool_calls(body["messages"])
                 raw = json.dumps(body).encode()
-        except Exception:
+            log_event(
-            pass
+                "agent_request",
+                request_id=request.state.request_id,
+                agui_run_id=body.get("runId"),
+                thread_id=body.get("threadId") or body.get("thread_id"),
+                message_count=len(body.get("messages") or []),
+                has_user_message=any(
+                    message.get("role") == "user" for message in body.get("messages") or []
+                ),
+                client_ip=request.state.client_ip,
+                user_agent=request.state.user_agent,
+                browser=request.state.browser,
+            )
+            # The BFF removes its `method: agent/run` envelope before
+            # forwarding to MAF. A non-empty user message is the reliable
+            # backend-side distinction between an agent run and hydration.
+            if any(message.get("role") == "user" for message in body.get("messages") or []):
+                chat_run_id = create_chat_run(
+                    request_id=request.state.request_id,
+                    agui_run_id=body.get("runId"),
+                    thread_id=body.get("threadId") or body.get("thread_id"),
+                    messages=body.get("messages") or [],
+                    client_ip=request.state.client_ip,
+                    user_agent=request.state.user_agent,
+                    browser=request.state.browser,
+                )
+        except Exception as exc:
+            # Parsing/repair must not prevent the agent endpoint from serving;
+            # the access log will still capture a resulting error response.
+            log_event(
+                "chat_audit_start_failed",
+                request_id=request.state.request_id,
+                error_type=type(exc).__name__,
+            )
+            body = None
         # Starlette caches the body; replace it so call_next sees the fixed bytes.
         request._body = raw  # type: ignore[attr-defined]
-
+    # Browser's IANA timezone, forwarded by the BFF — lets tools resolve
-    session_gen = get_session()
+    # "today" wherever the user is (falls back to Costa Rica).
-    session = next(session_gen)
+    tz_token = set_client_timezone(request.headers.get("x-client-timezone"))
-    token_var = set_session(session)
+    audit_token = set_current_chat_run(chat_run_id) if chat_run_id is not None else None
     try:
-        return await call_next(request)
+        response = await call_next(request)
+        if chat_run_id is None:
+            return response
+
+        original_iterator = response.body_iterator
+
+        async def audit_stream():
+            try:
+                async for chunk in original_iterator:
+                    yield chunk
+            except Exception as exc:
+                mark_chat_run_failed(chat_run_id, f"{type(exc).__name__}: {exc}")
+                raise
+            else:
+                # MAF normally finalizes via PostgresSnapshotStore.save(). If
+                # it emitted no snapshot, do not leave a permanently-open row.
+                finish_pending_chat_run(chat_run_id)
+
+        response.body_iterator = audit_stream()
+        return response
+    except Exception as exc:
+        if chat_run_id is not None:
+            mark_chat_run_failed(chat_run_id, f"{type(exc).__name__}: {exc}")
+        raise
     finally:
+        if audit_token is not None:
+            reset_current_chat_run(audit_token)
+        reset_client_timezone(tz_token)
         reset_session(token_var)
         try:
             next(session_gen)
@@ -145,11 +363,26 @@ async def agent_auth_and_session(request: Request, call_next):
             pass
 
 
+# FastAPI wraps function middlewares in reverse registration order. Register
+# this after the AG-UI auth middleware so it observes every API response,
+# including auth failures that return before calling the inner application.
+app.middleware("http")(log_api_request)
+
+
 # Register app routes
 app.include_router(api_router)
 
-# Mount the AG-UI agent endpoint.
+# Mount the AG-UI agent endpoint. The snapshot store persists the chat
-add_agent_framework_fastapi_endpoint(app, build_agent(), AGENT_PATH)
+# thread across page reloads; scope is a constant because this is a
+# single-user app and auth is already enforced by agent_auth_and_session
+# (the scope resolver only sees the AGUIRequest, which carries no identity).
+add_agent_framework_fastapi_endpoint(
+    app,
+    build_agent(),
+    AGENT_PATH,
+    snapshot_store=PostgresSnapshotStore(),
+    snapshot_scope_resolver=lambda _request: "default",
+)
 
 
 @app.get("/")

backend/app/models/models.py

@@ -4,7 +4,7 @@ from decimal import Decimal
 from typing import Annotated, Optional
 
 from pydantic import PlainSerializer
-from sqlalchemy import JSON, Column, UniqueConstraint
+from sqlalchemy import JSON, Column, Text, UniqueConstraint
 from sqlalchemy.dialects.postgresql import JSONB
 from sqlmodel import Field, Relationship, SQLModel
 
@@ -169,6 +169,17 @@ class Transaction(TransactionBase, table=True):
     id: Optional[int] = Field(default=None, primary_key=True)
     created_at: datetime = Field(default_factory=utcnow)
     category: Optional[Category] = Relationship(back_populates="transactions")
+    # Tasa Cero: set on generated cuota rows. Plain int (no DB FK) to avoid a
+    # circular transaction<->installmentplan dependency; cascades are handled
+    # explicitly in app.services.installments (SQLite tests don't enforce FKs
+    # anyway). Table-class only so TransactionCreate/n8n payloads can't set it.
+    installment_plan_id: Optional[int] = Field(default=None, index=True)
+    # Tasa Cero: True on the original purchase once converted to a plan; the
+    # anchor stays visible in listings but is excluded from budget/analytics
+    # aggregates (its generated cuotas are counted instead).
+    is_installment_anchor: bool = Field(
+        default=False, sa_column_kwargs={"server_default": "false"}
+    )
 
 
 class TransactionCreate(TransactionBase):
@@ -179,6 +190,8 @@ class TransactionRead(TransactionBase):
     id: int
     created_at: datetime
     category: Optional[CategoryRead] = None
+    installment_plan_id: Optional[int] = None
+    is_installment_anchor: bool = False
 
 
 class TransactionUpdate(SQLModel):
@@ -194,6 +207,39 @@ class TransactionUpdate(SQLModel):
     deferred_to_next_cycle: Optional[bool] = None
 
 
+# --- Installment Plan (Tasa Cero) ---
+
+
+class InstallmentPlanBase(SQLModel):
+    num_installments: int
+    first_installment_date: datetime
+    total_amount: Money = Field(max_digits=15, decimal_places=2)
+    # All cuotas but the last; the last absorbs the rounding remainder.
+    installment_amount: Money = Field(max_digits=15, decimal_places=2)
+    currency: Currency = Currency.CRC
+    notes: Optional[str] = None
+
+
+class InstallmentPlan(InstallmentPlanBase, table=True):
+    id: Optional[int] = Field(default=None, primary_key=True)
+    anchor_transaction_id: int = Field(
+        foreign_key="transaction.id", ondelete="CASCADE", unique=True, index=True
+    )
+    created_at: datetime = Field(default_factory=utcnow)
+
+
+class InstallmentPlanCreate(SQLModel):
+    transaction_id: int
+    num_installments: int = 3
+    first_installment_date: Optional[datetime] = None  # default: anchor.date
+
+
+class InstallmentPlanUpdate(SQLModel):
+    num_installments: Optional[int] = None
+    first_installment_date: Optional[datetime] = None
+    notes: Optional[str] = None
+
+
 # --- Exchange Rate ---
 
 
@@ -491,3 +537,67 @@ class WaterMeterReading(WaterMeterReadingBase, table=True):
 class WaterMeterReadingRead(WaterMeterReadingBase):
     id: int
     created_at: datetime
+
+
+# --- Assistant Chat Thread ---
+
+
+class ChatThreadSnapshot(SQLModel, table=True):
+    """Latest AG-UI thread snapshot per (scope, thread_id).
+
+    Written by app/agent/snapshot_store.py: MAF overwrites the full
+    cumulative message list at each run end — one row per thread, not an
+    append log.
+    """
+
+    __table_args__ = (UniqueConstraint("scope", "thread_id"),)
+
+    id: Optional[int] = Field(default=None, primary_key=True)
+    scope: str = Field(index=True)
+    thread_id: str
+    messages: list = Field(
+        default_factory=list,
+        sa_column=Column(JSON_OR_JSONB, nullable=False, server_default="[]"),
+    )
+    state: Optional[dict] = Field(
+        default=None, sa_column=Column(JSON_OR_JSONB, nullable=True)
+    )
+    interrupt: Optional[list] = Field(
+        default=None, sa_column=Column(JSON_OR_JSONB, nullable=True)
+    )
+    updated_at: datetime = Field(default_factory=utcnow)
+
+
+# --- Assistant Chat Run Audit ---
+
+
+class ChatRunLog(SQLModel, table=True):
+    """Append-only diagnostic record for an AG-UI agent/run request.
+
+    Thread snapshots are mutable conversation state. This table instead keeps
+    the request, model, tool activity, and final emitted answer for a bounded
+    retention period so individual assistant runs can be investigated later.
+    """
+
+    id: Optional[int] = Field(default=None, primary_key=True)
+    request_id: str = Field(index=True, unique=True)
+    agui_run_id: Optional[str] = Field(default=None, index=True)
+    requested_thread_id: Optional[str] = Field(default=None, index=True)
+    response_thread_id: Optional[str] = Field(default=None, index=True)
+    model: str
+    client_ip: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))
+    user_agent: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))
+    browser: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))
+    user_prompt: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))
+    tool_calls: list = Field(
+        default_factory=list,
+        sa_column=Column(JSON_OR_JSONB, nullable=False, server_default="[]"),
+    )
+    assistant_response: Optional[str] = Field(
+        default=None, sa_column=Column(Text, nullable=True)
+    )
+    status: str = Field(default="started", index=True)
+    error: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))
+    started_at: datetime = Field(default_factory=utcnow)
+    completed_at: Optional[datetime] = Field(default=None)
+    expires_at: datetime = Field(index=True)

backend/app/services/budget_projection.py

@@ -23,6 +23,11 @@ FRESH_START_MONTH = 3
 # Income-like transaction types that should never be counted as expenses
 INCOME_TYPES = (TransactionType.DEPOSITO, TransactionType.SALARY)
 
+# Tasa Cero: the original purchase ("anchor") is excluded from all budget
+# aggregates — its generated cuota transactions are counted instead.
+# See app/services/installments.py.
+NOT_INSTALLMENT_ANCHOR = Transaction.is_installment_anchor == False  # noqa: E712
+
 
 def get_effective_amount(item: RecurringItem, month: int, year: int) -> float | None:
     """Return the effective amount for a recurring item in a given month, or None if inactive."""
@@ -133,7 +138,7 @@ def compute_actuals_by_source(
                 func.coalesce(func.sum(amount_crc), 0),
                 func.count(),
             )
-            .where(*where)
+            .where(NOT_INSTALLMENT_ANCHOR, *where)
             .group_by(Transaction.source, Transaction.transaction_type)
         ).all()
         return {(s, t): (float(total), cnt) for s, t, total, cnt in rows}
@@ -225,6 +230,7 @@ def compute_actuals_by_category(
                 Transaction.source == TransactionSource.CREDIT_CARD,
                 Transaction.category_id.is_not(None),  # type: ignore[union-attr]
                 col(Transaction.transaction_type).notin_(INCOME_TYPES),
+                NOT_INSTALLMENT_ANCHOR,
                 Transaction.deferred_to_next_cycle == False,  # noqa: E712
             )
             .group_by(Transaction.category_id, Transaction.transaction_type)
@@ -245,6 +251,7 @@ def compute_actuals_by_category(
                 Transaction.source == TransactionSource.CREDIT_CARD,
                 Transaction.category_id.is_not(None),  # type: ignore[union-attr]
                 col(Transaction.transaction_type).notin_(INCOME_TYPES),
+                NOT_INSTALLMENT_ANCHOR,
                 Transaction.deferred_to_next_cycle == True,  # noqa: E712
             )
             .group_by(Transaction.category_id, Transaction.transaction_type)
@@ -265,6 +272,7 @@ def compute_actuals_by_category(
                 Transaction.source != TransactionSource.CREDIT_CARD,
                 Transaction.category_id.is_not(None),  # type: ignore[union-attr]
                 col(Transaction.transaction_type).notin_(INCOME_TYPES),
+                NOT_INSTALLMENT_ANCHOR,
             )
             .group_by(Transaction.category_id, Transaction.transaction_type)
         ).all()
@@ -306,6 +314,7 @@ def compute_cc_by_category(
                 Transaction.date < cc_end,
                 Transaction.source == TransactionSource.CREDIT_CARD,
                 col(Transaction.transaction_type).notin_(INCOME_TYPES),
+                NOT_INSTALLMENT_ANCHOR,
                 Transaction.deferred_to_next_cycle == False,  # noqa: E712
             )
             .group_by(Transaction.category_id, Transaction.transaction_type)
@@ -324,6 +333,7 @@ def compute_cc_by_category(
                 Transaction.date < prev_end,
                 Transaction.source == TransactionSource.CREDIT_CARD,
                 col(Transaction.transaction_type).notin_(INCOME_TYPES),
+                NOT_INSTALLMENT_ANCHOR,
                 Transaction.deferred_to_next_cycle == True,  # noqa: E712
             )
             .group_by(Transaction.category_id, Transaction.transaction_type)
@@ -440,6 +450,7 @@ def compute_monthly_projection(
                 Transaction.source == TransactionSource.CREDIT_CARD,
                 Transaction.category_id.is_(None),  # type: ignore[union-attr]
                 col(Transaction.transaction_type).notin_(INCOME_TYPES),
+                NOT_INSTALLMENT_ANCHOR,
                 Transaction.deferred_to_next_cycle == False,  # noqa: E712
             )
             .group_by(Transaction.transaction_type)
@@ -455,6 +466,7 @@ def compute_monthly_projection(
                 Transaction.source == TransactionSource.CREDIT_CARD,
                 Transaction.category_id.is_(None),  # type: ignore[union-attr]
                 col(Transaction.transaction_type).notin_(INCOME_TYPES),
+                NOT_INSTALLMENT_ANCHOR,
                 Transaction.deferred_to_next_cycle == True,  # noqa: E712
             )
             .group_by(Transaction.transaction_type)
@@ -470,6 +482,7 @@ def compute_monthly_projection(
                 Transaction.source != TransactionSource.CREDIT_CARD,
                 Transaction.category_id.is_(None),  # type: ignore[union-attr]
                 col(Transaction.transaction_type).notin_(INCOME_TYPES),
+                NOT_INSTALLMENT_ANCHOR,
             )
             .group_by(Transaction.transaction_type)
         ).all()

backend/app/services/installments.py

@@ -0,0 +1,187 @@
+"""Tasa Cero (BAC zero-interest installment financing) plans.
+
+A qualifying credit-card purchase ("anchor") is billed by the bank as N equal
+monthly cuotas instead of one charge. Here the anchor transaction is flagged
+(`is_installment_anchor`) and excluded from budget aggregates, and N real
+cuota Transaction rows are generated so they flow through the existing
+billing-cycle logic — including future-dated cuotas, which intentionally show
+up in future months' budgets as committed spend.
+
+Verified BAC mechanics (real Financiamientos data, 2026-05/07):
+- cuota = total / N truncated to 0.10; the LAST cuota absorbs the remainder
+  (111,053.60/3 -> 37,017.80 x2 + 37,018.00).
+- Cuotas post one per 18th-cut billing cycle, on the 19th, except the first
+  one whose date varies per plan (purchase date or a later 19th) — hence
+  `first_installment_date` is stored per plan and user-editable.
+
+Known v1 gaps: paste-imported real "CUOTA:XX/YY" statement lines won't dedup
+against the synthetic cuotas; editing the anchor's amount does not recompute
+the plan (edit the plan instead).
+
+Cascades are handled explicitly here in Python: tests run on SQLite without
+FK enforcement, and transaction.installment_plan_id has no DB-level FK (it
+would be circular with installmentplan.anchor_transaction_id).
+"""
+
+import re
+from datetime import datetime
+from decimal import ROUND_DOWN, Decimal
+from typing import Optional
+
+from sqlmodel import Session, select
+
+from app.models.models import (
+    InstallmentPlan,
+    Transaction,
+    TransactionType,
+)
+from app.services.budget_projection import get_previous_cycle
+
+# BAC prefixes Tasa Cero voucher merchants with "CC " (observed with a double
+# space: "CC  CONSTRUPLAZA"). Non-prefixed plans (e.g. ALMACENES SIMAN) are
+# converted manually via POST /installment-plans/.
+TASA_CERO_RE = re.compile(r"^CC\s", re.IGNORECASE)
+
+DEFAULT_NUM_INSTALLMENTS = 3
+
+
+def is_tasa_cero_merchant(merchant: str) -> bool:
+    return bool(TASA_CERO_RE.match(merchant))
+
+
+def compute_installment_amounts(total: Decimal, n: int) -> list[Decimal]:
+    """Split `total` into n cuotas using BAC's rule: truncate to 0.10, last
+    cuota absorbs the remainder. Invariant: sum(result) == total."""
+    per = (total / n).quantize(Decimal("0.1"), rounding=ROUND_DOWN)
+    return [per] * (n - 1) + [total - per * (n - 1)]
+
+
+def _add_months(year: int, month: int, delta: int) -> tuple[int, int]:
+    idx = year * 12 + (month - 1) + delta
+    return idx // 12, idx % 12 + 1
+
+
+def compute_installment_dates(first: datetime, n: int) -> list[datetime]:
+    """Cuota 1 = `first` verbatim; cuotas 2..n land on the 19th of consecutive
+    billing cycles (cycle = [18th, next 18th), see get_cycle_range)."""
+    if first.day >= 18:
+        cycle_y, cycle_m = first.year, first.month
+    else:
+        cycle_y, cycle_m = get_previous_cycle(first.year, first.month)
+    dates = [first]
+    for i in range(1, n):
+        y, m = _add_months(cycle_y, cycle_m, i)
+        dates.append(datetime(y, m, 19))
+    return dates
+
+
+def _generate_cuotas(
+    session: Session, plan: InstallmentPlan, anchor: Transaction
+) -> None:
+    amounts = compute_installment_amounts(anchor.amount, plan.num_installments)
+    dates = compute_installment_dates(
+        plan.first_installment_date, plan.num_installments
+    )
+    merchant_label = " ".join(anchor.merchant.split())  # collapse "CC  X"
+    ref_base = anchor.reference or f"TC{anchor.id}"
+    n = plan.num_installments
+    for i, (amount, when) in enumerate(zip(amounts, dates), start=1):
+        session.add(
+            Transaction(
+                amount=amount,
+                currency=anchor.currency,
+                merchant=f"{merchant_label} CUOTA:{i:02d}/{n:02d}",
+                city=anchor.city,
+                date=when,
+                card_type=anchor.card_type,
+                card_last4=anchor.card_last4,
+                reference=f"{ref_base}-C{i:02d}",
+                transaction_type=TransactionType.COMPRA,
+                source=anchor.source,
+                bank=anchor.bank,
+                notes=f"Tasa Cero plan #{plan.id}",
+                category_id=anchor.category_id,
+                deferred_to_next_cycle=False,
+                installment_plan_id=plan.id,
+            )
+        )
+
+
+def _delete_cuotas(session: Session, plan: InstallmentPlan) -> None:
+    cuotas = session.exec(
+        select(Transaction).where(Transaction.installment_plan_id == plan.id)
+    ).all()
+    for cuota in cuotas:
+        session.delete(cuota)
+
+
+def create_plan(
+    session: Session,
+    anchor: Transaction,
+    num_installments: int = DEFAULT_NUM_INSTALLMENTS,
+    first_installment_date: Optional[datetime] = None,
+) -> InstallmentPlan:
+    """Convert `anchor` (must be committed, id set) into a Tasa Cero plan and
+    generate its cuota rows. Caller commits."""
+    amounts = compute_installment_amounts(anchor.amount, num_installments)
+    plan = InstallmentPlan(
+        anchor_transaction_id=anchor.id,
+        num_installments=num_installments,
+        first_installment_date=first_installment_date or anchor.date,
+        total_amount=anchor.amount,
+        installment_amount=amounts[0],
+        currency=anchor.currency,
+    )
+    session.add(plan)
+    session.flush()  # assign plan.id for the cuota FK/notes
+    anchor.is_installment_anchor = True
+    session.add(anchor)
+    _generate_cuotas(session, plan, anchor)
+    return plan
+
+
+def regenerate_cuotas(
+    session: Session,
+    plan: InstallmentPlan,
+    anchor: Transaction,
+    num_installments: Optional[int] = None,
+    first_installment_date: Optional[datetime] = None,
+) -> InstallmentPlan:
+    """Apply plan edits by delete-and-recreate of the cuota rows. Per-cuota
+    edits (e.g. recategorizations) are lost; category is re-inherited from
+    the anchor. Caller commits."""
+    if num_installments is not None:
+        plan.num_installments = num_installments
+    if first_installment_date is not None:
+        plan.first_installment_date = first_installment_date
+    plan.total_amount = anchor.amount
+    plan.installment_amount = compute_installment_amounts(
+        anchor.amount, plan.num_installments
+    )[0]
+    _delete_cuotas(session, plan)
+    _generate_cuotas(session, plan, anchor)
+    session.add(plan)
+    return plan
+
+
+def delete_plan(session: Session, plan: InstallmentPlan, anchor: Transaction) -> None:
+    """Unconvert: remove cuotas + plan, restore the anchor to a normal
+    transaction. Caller commits."""
+    _delete_cuotas(session, plan)
+    anchor.is_installment_anchor = False
+    session.add(anchor)
+    session.delete(plan)
+
+
+def teardown_plan_for_anchor(session: Session, anchor: Transaction) -> None:
+    """The anchor itself is being deleted: remove its plan and cuotas."""
+    if not anchor.is_installment_anchor:
+        return
+    plan = session.exec(
+        select(InstallmentPlan).where(
+            InstallmentPlan.anchor_transaction_id == anchor.id
+        )
+    ).first()
+    if plan:
+        _delete_cuotas(session, plan)
+        session.delete(plan)

backend/app/timeutil.py

@@ -1,4 +1,55 @@
-from datetime import datetime, timezone
+import contextvars
+from datetime import date, datetime, timedelta, timezone, tzinfo
+from zoneinfo import ZoneInfo
+
+# Costa Rica has no DST; a fixed offset is exact year-round. This is the
+# FALLBACK when the request doesn't declare a timezone (n8n posts, tests).
+CR_TZ = timezone(timedelta(hours=-6))
+
+# Per-request client timezone, set by the agent middleware from the
+# X-Client-Timezone header (IANA name sent by the browser). Falls back to
+# Costa Rica so headless callers keep the owner's local semantics.
+_client_tz: contextvars.ContextVar[tzinfo] = contextvars.ContextVar(
+    "client_tz", default=CR_TZ
+)
+
+
+def set_client_timezone(name: str | None) -> contextvars.Token | None:
+    """Bind the request's IANA timezone; ignores unknown/absent names.
+
+    Proxies that see the header twice merge the values into a comma list
+    ("Zone, Zone") — take the first entry.
+    """
+    if not name:
+        return None
+    try:
+        return _client_tz.set(ZoneInfo(name.split(",")[0].strip()))
+    except (KeyError, ValueError):
+        return None
+
+
+def reset_client_timezone(token: contextvars.Token | None) -> None:
+    if token is not None:
+        _client_tz.reset(token)
+
+
+def client_tz() -> tzinfo:
+    return _client_tz.get()
+
+
+def today_client() -> date:
+    """Current date where the USER is (request timezone, CR fallback).
+
+    The server clock is UTC — at 6 pm in Costa Rica it is already "tomorrow"
+    in UTC. Anything user-facing that means "today" (agent answers, date
+    defaults) must come from here, never date.today().
+    """
+    return datetime.now(client_tz()).date()
+
+
+def today_cr() -> date:
+    """Current date in Costa Rica (UTC-6) — timezone-independent fallback."""
+    return datetime.now(CR_TZ).date()
 
 
 def utcnow() -> datetime:

backend/constraints.txt

@@ -0,0 +1,182 @@
+a2a-sdk==0.3.23
+ag-ui-protocol==0.1.19
+agent-framework==1.11.0
+agent-framework-a2a==1.0.0b260428
+agent-framework-ag-ui==1.0.0rc8
+agent-framework-anthropic==1.0.0b260428
+agent-framework-azure-ai-search==1.0.0b260428
+agent-framework-azure-cosmos==1.0.0b260428
+agent-framework-azurefunctions==1.0.0b260428
+agent-framework-bedrock==1.0.0b260428
+agent-framework-chatkit==1.0.0b260428
+agent-framework-claude==1.0.0b260428
+agent-framework-copilotstudio==1.0.0b260428
+agent-framework-core==1.11.0
+agent-framework-declarative==1.0.0b260428
+agent-framework-devui==1.0.0b260428
+agent-framework-durabletask==1.0.0b260428
+agent-framework-foundry==1.2.1
+agent-framework-foundry-local==1.0.0b260428
+agent-framework-github-copilot==1.0.0b260402
+agent-framework-lab==1.0.0b251024
+agent-framework-mem0==1.0.0b260428
+agent-framework-ollama==1.0.0b260428
+agent-framework-openai==1.10.1
+agent-framework-orchestrations==1.0.0b260428
+agent-framework-purview==1.0.0b260428
+agent-framework-redis==1.0.0b260428
+aiohappyeyeballs==2.6.2
+aiohttp==3.14.1
+aiosignal==1.4.0
+alembic==1.18.4
+annotated-doc==0.0.4
+annotated-types==0.7.0
+anthropic==0.80.0
+anyio==4.13.0
+async-timeout==5.0.1
+asyncio==4.0.0
+attrs==26.1.0
+azure-ai-inference==1.0.0b9
+azure-ai-projects==2.2.0
+azure-common==1.1.28
+azure-core==1.41.0
+azure-cosmos==4.16.1
+azure-functions==1.24.0
+azure-functions-durable==1.5.0
+azure-identity==1.25.3
+azure-search-documents==11.7.0b2
+azure-storage-blob==12.30.0
+backoff==2.2.1
+bcrypt==5.0.0
+boto3==1.43.26
+botocore==1.43.26
+certifi==2026.5.20
+cffi==2.0.0
+charset-normalizer==3.4.7
+claude-agent-sdk==0.1.48
+click==8.4.1
+clr_loader==0.2.10
+cryptography==48.0.1
+detect-installer==0.1.0
+distro==1.9.0
+dnspython==2.8.0
+docstring_parser==0.18.0
+durabletask==1.5.0
+durabletask.azuremanaged==1.5.0
+ecdsa==0.19.2
+email-validator==2.3.0
+fastapi==0.133.0
+fastapi-cli==0.0.24
+fastapi-cloud-cli==0.19.0
+fastar==0.11.0
+foundry-local-sdk==0.5.1
+frozenlist==1.8.0
+furl==2.1.4
+github-copilot-sdk==0.1.32
+google-api-core==2.31.0
+google-auth==2.53.0
+googleapis-common-protos==1.75.0
+griffelib==2.0.2
+grpcio==1.81.0
+h11==0.16.0
+h2==4.3.0
+hpack==4.1.0
+http-ece==1.2.1
+httpcore==1.0.9
+httptools==0.8.0
+httpx==0.28.1
+httpx-sse==0.4.3
+hyperframe==6.1.0
+idna==3.18
+iniconfig==2.3.0
+isodate==0.7.2
+Jinja2==3.1.6
+jiter==0.15.0
+jmespath==1.1.0
+jsonpath-ng==1.8.0
+jsonschema==4.26.0
+jsonschema-specifications==2025.9.1
+Mako==1.3.12
+markdown-it-py==4.2.0
+MarkupSafe==3.0.3
+mcp==1.27.2
+mdurl==0.1.2
+mem0ai==1.0.11
+microsoft-agents-activity==0.3.1
+microsoft-agents-copilotstudio-client==0.3.1
+microsoft-agents-hosting-core==0.3.1
+ml_dtypes==0.5.4
+msal==1.37.0
+msal-extensions==1.3.1
+multidict==6.7.1
+numpy==2.4.6
+ollama==0.5.3
+openai==2.41.0
+openai-agents==0.17.4
+openai-chatkit==1.6.5
+opentelemetry-api==1.42.1
+opentelemetry-sdk==1.42.1
+opentelemetry-semantic-conventions==0.63b1
+orderedmultidict==1.0.2
+packaging==26.2
+passlib==1.7.4
+pluggy==1.6.0
+portalocker==3.2.0
+posthog==7.18.0
+powerfx==0.0.34
+propcache==0.5.2
+proto-plus==1.28.0
+protobuf==6.33.6
+psycopg2-binary==2.9.12
+py-vapid==1.9.4
+pyasn1==0.6.3
+pyasn1_modules==0.4.2
+pycparser==3.0
+pydantic==2.13.4
+pydantic-extra-types==2.11.1
+pydantic-settings==2.14.1
+pydantic_core==2.46.4
+Pygments==2.20.0
+PyJWT==2.13.0
+pytest==9.0.3
+python-dateutil==2.9.0.post0
+python-dotenv==1.2.2
+python-jose==3.5.0
+python-multipart==0.0.32
+python-ulid==3.1.0
+pythonnet==3.0.5
+pytz==2026.2
+pywebpush==2.3.0
+PyYAML==6.0.3
+qdrant-client==1.18.0
+redis==7.1.1
+redisvl==0.15.0
+referencing==0.37.0
+requests==2.34.2
+rich==15.0.0
+rich-toolkit==0.20.1
+rignore==0.7.6
+rpds-py==2026.5.1
+rsa==4.9.1
+s3transfer==0.18.0
+sentry-sdk==2.62.0
+shellingham==1.5.4
+six==1.17.0
+sniffio==1.3.1
+SQLAlchemy==2.0.50
+sqlmodel==0.0.38
+sse-starlette==3.4.5
+starlette==1.2.1
+tenacity==9.1.4
+tqdm==4.68.2
+typer==0.26.7
+types-requests==2.33.0.20260518
+typing-inspection==0.4.2
+typing_extensions==4.15.0
+urllib3==2.7.0
+uvicorn==0.41.0
+uvloop==0.22.1
+watchfiles==1.2.0
+websockets==16.0
+Werkzeug==3.1.8
+yarl==1.24.2

backend/requirements.txt

@@ -11,6 +11,6 @@ httpx
 pywebpush
 py-vapid
 python-dateutil
-agent-framework==1.2.1
+agent-framework==1.11.0
-agent-framework-ag-ui==1.0.0b260428
+agent-framework-ag-ui==1.0.0rc8
-agent-framework-openai==1.2.1
+agent-framework-openai==1.10.1

backend/tests/conftest.py

@@ -10,6 +10,9 @@ os.environ.setdefault(
 os.environ.setdefault("ADMIN_USERNAME", "testadmin")
 os.environ.setdefault("ADMIN_PASSWORD", "test-password")
 os.environ.setdefault("DATABASE_URL", "sqlite://")
+# app.main builds the MAF agent at import; the OpenAI client only needs a
+# syntactically-present key.
+os.environ.setdefault("OPENAI_API_KEY", "test-dummy-key")
 
 import pytest
 from sqlalchemy.pool import StaticPool

backend/tests/test_agent_config.py

@@ -0,0 +1,14 @@
+"""Assistant transport configuration."""
+
+from agent_framework.openai import OpenAIChatClient
+
+from app.agent import agent as agent_module
+
+
+def test_agent_uses_responses_client_for_the_configured_model(monkeypatch):
+    monkeypatch.setattr(agent_module.settings, "AGENT_MODEL", "gpt-5.6-luna")
+
+    agent = agent_module.build_agent()
+
+    assert isinstance(agent.client, OpenAIChatClient)
+    assert agent.client.model == "gpt-5.6-luna"

backend/tests/test_agent_tools.py

@@ -17,6 +17,7 @@ from app.models.models import (
     MunicipalReceipt,
     PensionSnapshot,
     Transaction,
+    TransactionType,
     WaterMeterReading,
 )
 
@@ -149,3 +150,137 @@ def test_recent_transactions_json_safe(bound_session):
     out = tools.get_recent_transactions()
     json.dumps(out)
     assert out[0]["amount"] == 42.42
+
+
+def test_recent_transactions_exclude_future_cuotas(bound_session):
+    from datetime import timedelta
+
+    from app.timeutil import today_cr
+
+    today = datetime.combine(today_cr(), datetime.min.time())
+    bound_session.add(
+        Transaction(amount=Decimal("10"), merchant="BILLED", date=today)
+    )
+    bound_session.add(
+        Transaction(
+            amount=Decimal("20"),
+            merchant="FUTURE CUOTA:03/06",
+            date=today + timedelta(days=45),
+        )
+    )
+    bound_session.commit()
+    merchants = [t["merchant"] for t in tools.get_recent_transactions()]
+    assert "BILLED" in merchants
+    assert "FUTURE CUOTA:03/06" not in merchants
+
+
+def test_salary_deposits_returns_individual_filtered_rows(bound_session):
+    bound_session.add_all(
+        [
+            Transaction(
+                amount=Decimal("1500"),
+                merchant="SALARY JULY",
+                date=datetime(2026, 7, 14, 9),
+                transaction_type=TransactionType.SALARY,
+                reference="PAY-2026-07",
+            ),
+            Transaction(
+                amount=Decimal("1400"),
+                merchant="SALARY JUNE",
+                date=datetime(2026, 6, 14, 9),
+                transaction_type=TransactionType.SALARY,
+            ),
+            Transaction(
+                amount=Decimal("999"),
+                merchant="PURCHASE",
+                date=datetime(2026, 7, 14, 10),
+            ),
+        ]
+    )
+    bound_session.commit()
+
+    out = tools.get_salary_deposits(
+        start_date="2026-07-14", end_date="2026-07-15"
+    )
+
+    json.dumps(out)
+    assert out == [
+        {
+            "id": out[0]["id"],
+            "date": "2026-07-14T09:00:00",
+            "amount": 1500.0,
+            "currency": "CRC",
+            "merchant": "SALARY JULY",
+            "source": "CREDIT_CARD",
+            "bank": "BAC",
+            "transaction_type": "SALARY",
+            "reference": "PAY-2026-07",
+            "notes": None,
+        }
+    ]
+
+
+def test_get_current_date_is_costa_rica_and_cycle_consistent():
+    from app.timeutil import today_cr
+
+    out = tools.get_current_date()
+    today = today_cr()
+    assert out["date"] == today.isoformat()
+    # The active cycle must contain today: [start, end)
+    start, end = out["cycle_range"]
+    assert start <= out["date"] < end
+    assert start.endswith("-18") and end.endswith("-18")
+
+
+def test_daily_spending_day_scoped(bound_session):
+    from datetime import timedelta
+
+    from app.timeutil import today_cr
+
+    today = datetime.combine(today_cr(), datetime.min.time())
+    bound_session.add(
+        Transaction(amount=Decimal("100"), merchant="TODAY-A", date=today.replace(hour=9))
+    )
+    bound_session.add(
+        Transaction(amount=Decimal("50"), merchant="TODAY-B", date=today.replace(hour=15))
+    )
+    bound_session.add(
+        Transaction(
+            amount=Decimal("999"),
+            merchant="FUTURE CUOTA",
+            date=today + timedelta(days=40),
+        )
+    )
+    bound_session.commit()
+
+    out = tools.get_daily_spending(
+        start_date=today.date().isoformat(),
+        end_date=(today.date() + timedelta(days=60)).isoformat(),
+    )
+    assert len(out) == 1
+    assert out[0]["date"] == today.date().isoformat()
+    assert out[0]["total_crc"] == 150.0
+    assert out[0]["count"] == 2
+
+
+def test_get_current_date_respects_client_timezone():
+    from datetime import datetime, timezone as tz
+
+    from app.timeutil import (
+        client_tz,
+        reset_client_timezone,
+        set_client_timezone,
+    )
+
+    token = set_client_timezone("Asia/Tokyo")
+    try:
+        out = tools.get_current_date()
+        assert out["timezone"] == "Asia/Tokyo"
+        assert out["date"] == datetime.now(client_tz()).date().isoformat()
+    finally:
+        reset_client_timezone(token)
+
+    # Unknown names are ignored — CR fallback stays active.
+    assert set_client_timezone("Not/AZone") is None
+    assert set_client_timezone(None) is None
+    assert tools.get_current_date()["timezone"] == "UTC-06:00"

backend/tests/test_analytics.py

@@ -0,0 +1,62 @@
+"""Analytics endpoints: category aggregation (Decimal regression) and the
+arbitrary date-range filters added for the Analytics range picker."""
+
+from datetime import datetime
+from decimal import Decimal
+
+from app.api.v1.endpoints.analytics import daily_spending, spending_by_category
+from app.models.models import Category, Transaction
+
+from tests.test_installments import make_cc_tx
+
+
+def seed(session):
+    cat = Category(name="Groceries")
+    session.add(cat)
+    session.commit()
+    make_cc_tx(session, merchant="A", amount="1000.50", reference="a1",
+               date=datetime(2026, 6, 2), category_id=cat.id)
+    make_cc_tx(session, merchant="B", amount="2000.00", reference="b1",
+               date=datetime(2026, 6, 20))
+    return cat
+
+
+class TestSpendingByCategory:
+    def test_decimal_sum_does_not_crash_and_percentages_add_up(self, session):
+        """Regression: Decimal grand total vs float row total raised
+        TypeError, 500ing the endpoint whenever it had data."""
+        seed(session)
+        rows = spending_by_category(session=session, _user="t")
+        assert {r.category_name for r in rows} == {"Groceries", "Uncategorized"}
+        assert sum(r.percentage for r in rows) == 100.0
+
+    def test_date_range_overrides_cycle(self, session):
+        seed(session)
+        rows = spending_by_category(
+            start_date="2026-06-01",
+            end_date="2026-06-10",
+            cycle_year=2026,
+            cycle_month=1,  # would match nothing; range must win
+            session=session,
+            _user="t",
+        )
+        assert len(rows) == 1
+        assert rows[0].category_name == "Groceries"
+        assert rows[0].total == 1000.50
+
+
+class TestDailySpending:
+    def test_date_range_filter(self, session):
+        seed(session)
+        rows = daily_spending(
+            start_date="2026-06-15", end_date="2026-07-01",
+            session=session, _user="t",
+        )
+        assert [r.date for r in rows] == ["2026-06-20"]
+        assert rows[0].total == 2000.00
+
+    def test_future_cuotas_excluded(self, session):
+        make_cc_tx(session, merchant="FUTURE", amount="500.00",
+                   reference="f1", date=datetime(2030, 1, 19))
+        rows = daily_spending(session=session, _user="t")
+        assert rows == []

backend/tests/test_chat_audit.py

@@ -0,0 +1,139 @@
+"""Chat-run audit persistence and redacted HTTP access logs."""
+
+import asyncio
+from datetime import timedelta
+
+from agent_framework_ag_ui import AGUIThreadSnapshot
+from starlette.requests import Request
+from starlette.responses import Response
+from sqlmodel import select
+
+import app.agent.chat_audit as chat_audit
+import app.agent.snapshot_store as snapshot_store_module
+from app.agent.snapshot_store import PostgresSnapshotStore
+from app.models.models import ChatRunLog
+from app.timeutil import utcnow
+
+
+def _audit_store(monkeypatch, engine):
+    monkeypatch.setattr(chat_audit, "engine", engine)
+    monkeypatch.setattr(snapshot_store_module, "engine", engine)
+    return PostgresSnapshotStore()
+
+
+def test_snapshot_completes_chat_run_with_tools_and_response(monkeypatch, engine, session):
+    store = _audit_store(monkeypatch, engine)
+    run_id = chat_audit.create_chat_run(
+        request_id="req-1",
+        agui_run_id="run-1",
+        thread_id="main",
+        messages=[{"role": "user", "content": "¿Cuál es mi saldo?"}],
+        client_ip="203.0.113.7",
+        user_agent="Mozilla/5.0 TestBrowser/1.0",
+        browser="TestBrowser",
+    )
+    token = chat_audit.set_current_chat_run(run_id)
+    try:
+        asyncio.run(
+            store.save(
+                scope="default",
+                thread_id="resp_123",
+                snapshot=AGUIThreadSnapshot(
+                    messages=[
+                        {"id": "u1", "role": "user", "content": "¿Cuál es mi saldo?"},
+                        {
+                            "id": "a1",
+                            "role": "assistant",
+                            "content": None,
+                            "tool_calls": [
+                                {
+                                    "id": "call-1",
+                                    "type": "function",
+                                    "function": {"name": "get_net_worth", "arguments": "{}"},
+                                }
+                            ],
+                        },
+                        {"id": "t1", "role": "tool", "tool_call_id": "call-1", "content": "{\"net_crc\": 1}"},
+                        {"id": "a2", "role": "assistant", "content": "Tu saldo es ₡1."},
+                    ]
+                ),
+            )
+        )
+    finally:
+        chat_audit.reset_current_chat_run(token)
+
+    row = session.get(ChatRunLog, run_id)
+    assert row is not None
+    assert row.status == "completed"
+    assert row.agui_run_id == "run-1"
+    assert row.response_thread_id == "resp_123"
+    assert row.user_prompt == "¿Cuál es mi saldo?"
+    assert row.client_ip == "203.0.113.7"
+    assert row.user_agent == "Mozilla/5.0 TestBrowser/1.0"
+    assert row.browser == "TestBrowser"
+    assert row.assistant_response == "Tu saldo es ₡1."
+    assert row.tool_calls == [
+        {
+            "id": "call-1",
+            "name": "get_net_worth",
+            "arguments": "{}",
+            "result": '{"net_crc": 1}',
+        }
+    ]
+
+
+def test_failure_and_retention_cleanup(monkeypatch, engine, session):
+    _audit_store(monkeypatch, engine)
+    failed_id = chat_audit.create_chat_run(
+        request_id="req-failed", agui_run_id="run-failed", thread_id="main", messages=[]
+    )
+    chat_audit.mark_chat_run_failed(failed_id, "RuntimeError: provider unavailable")
+    assert session.get(ChatRunLog, failed_id).status == "failed"
+
+    expired = ChatRunLog(
+        request_id="req-expired",
+        model="gpt-5.6-luna",
+        expires_at=utcnow() - timedelta(seconds=1),
+    )
+    session.add(expired)
+    session.commit()
+
+    assert chat_audit.purge_expired_chat_runs() == 1
+    assert session.exec(select(ChatRunLog).where(ChatRunLog.request_id == "req-expired")).first() is None
+
+
+def test_api_access_log_never_contains_request_body(monkeypatch):
+    from app.main import log_api_request
+
+    logged = []
+    monkeypatch.setattr("app.main.log_event", lambda event, **fields: logged.append((event, fields)))
+    scope = {
+        "type": "http",
+        "method": "POST",
+        "path": "/api/auth/login",
+        "raw_path": b"/api/auth/login",
+        "query_string": b"",
+        "headers": [
+            (b"x-real-ip", b"203.0.113.9"),
+            (b"user-agent", b"Mozilla/5.0 Chrome/138.0.0.0 Safari/537.36"),
+        ],
+        "scheme": "http",
+        "server": ("testserver", 80),
+        "client": ("testclient", 1234),
+    }
+    request = Request(scope)
+
+    async def call_next(_request):
+        return Response(status_code=201)
+
+    response = asyncio.run(log_api_request(request, call_next))
+    assert response.headers["X-Request-ID"]
+    assert logged[0][0] == "api_request"
+    fields = logged[0][1]
+    assert fields["path"] == "/api/auth/login"
+    assert fields["status_code"] == 201
+    assert fields["client_ip"] == "203.0.113.9"
+    assert fields["browser"] == "Chrome"
+    assert fields["user_agent"] == "Mozilla/5.0 Chrome/138.0.0.0 Safari/537.36"
+    assert "password" not in fields
+    assert "body" not in fields

backend/tests/test_chat_persistence.py

@@ -0,0 +1,167 @@
+"""Chat thread persistence: snapshot store round-trip + clear endpoint."""
+
+import asyncio
+
+from agent_framework_ag_ui import AGUIThreadSnapshot
+from sqlmodel import select
+
+import app.agent.snapshot_store as snapshot_store_module
+from app.agent.snapshot_store import PostgresSnapshotStore
+from app.api.v1.endpoints.chat import clear_thread
+from app.models.models import ChatThreadSnapshot
+
+
+def _store(monkeypatch, engine):
+    # The store opens its own sessions from app.db.engine; point it at the
+    # test engine instead.
+    monkeypatch.setattr(snapshot_store_module, "engine", engine)
+    return PostgresSnapshotStore()
+
+
+def test_save_get_roundtrip_normalizes_and_filters(monkeypatch, engine):
+    store = _store(monkeypatch, engine)
+    snapshot = AGUIThreadSnapshot(
+        messages=[
+            {"id": "u1", "role": "user", "content": "hola"},
+            {
+                "id": "a1",
+                "role": "assistant",
+                "content": "",
+                # MAF emits snake_case; the store must return camelCase so
+                # @ag-ui/client's Zod schema doesn't strip it.
+                "tool_calls": [{"id": "t1", "type": "function"}],
+            },
+            {"id": "t1r", "role": "tool", "content": "ok", "tool_call_id": "t1"},
+            # MAF writes tool_calls: null on plain-text assistant messages —
+            # must not survive as toolCalls: null in the replay.
+            {"id": "a2", "role": "assistant", "content": "done", "tool_calls": None},
+            {"id": "ctx-123", "role": "system", "content": "run context"},
+        ],
+        state={"k": "v"},
+    )
+    asyncio.run(store.save(scope="default", thread_id="main", snapshot=snapshot))
+
+    loaded = asyncio.run(store.get(scope="default", thread_id="main"))
+    assert loaded is not None
+    assert [m["id"] for m in loaded.messages] == ["u1", "a1", "t1r", "a2"]
+    assistant = loaded.messages[1]
+    assert "tool_calls" not in assistant
+    assert assistant["toolCalls"] == [{"id": "t1", "type": "function"}]
+    tool_msg = loaded.messages[2]
+    assert "tool_call_id" not in tool_msg
+    assert tool_msg["toolCallId"] == "t1"
+    text_msg = loaded.messages[3]
+    assert "toolCalls" not in text_msg and "tool_calls" not in text_msg
+    assert loaded.state == {"k": "v"}
+
+
+def test_save_upserts_single_row(monkeypatch, engine, session):
+    store = _store(monkeypatch, engine)
+    for n in range(3):
+        snap = AGUIThreadSnapshot(
+            messages=[{"id": f"u{i}", "role": "user", "content": str(i)} for i in range(n + 1)]
+        )
+        asyncio.run(store.save(scope="default", thread_id="main", snapshot=snap))
+
+    rows = session.exec(select(ChatThreadSnapshot)).all()
+    assert len(rows) == 1
+    assert len(rows[0].messages) == 3
+
+
+def test_get_unknown_thread_returns_none(monkeypatch, engine):
+    store = _store(monkeypatch, engine)
+    assert asyncio.run(store.get(scope="default", thread_id="nope")) is None
+
+
+def test_delete_and_scope_isolation(monkeypatch, engine):
+    store = _store(monkeypatch, engine)
+    snap = AGUIThreadSnapshot(messages=[{"id": "u1", "role": "user", "content": "x"}])
+    asyncio.run(store.save(scope="default", thread_id="main", snapshot=snap))
+
+    assert asyncio.run(store.get(scope="other", thread_id="main")) is None
+    assert asyncio.run(store.delete(scope="default", thread_id="main")) is True
+    assert asyncio.run(store.delete(scope="default", thread_id="main")) is False
+    assert asyncio.run(store.get(scope="default", thread_id="main")) is None
+
+
+def test_save_dedupes_multi_run_turn(monkeypatch, engine):
+    """Mirror of MAF's duplicate merge on frontend-tool roundtrips: repeated
+    message ids, a re-issued identical render call, and extra tool results."""
+    store = _store(monkeypatch, engine)
+
+    def call(cid, name, args='{"a":1}'):
+        return {"id": cid, "type": "function", "function": {"name": name, "arguments": args}}
+
+    snapshot = AGUIThreadSnapshot(
+        messages=[
+            {"id": "u1", "role": "user", "content": "resumen"},
+            {"id": "a1", "role": "assistant", "content": "",
+             "tool_calls": [call("c1", "get_cycle_summary"), call("c2", "render_spending_summary")]},
+            {"id": "t1", "role": "tool", "content": "data", "tool_call_id": "c1"},
+            # MAF re-records the resent suffix verbatim…
+            {"id": "u1", "role": "user", "content": "resumen"},
+            {"id": "t1", "role": "tool", "content": "data", "tool_call_id": "c1"},
+            {"id": "t2", "role": "tool", "content": "ok", "tool_call_id": "c2"},
+            # …plus a synthetic second result for an answered call…
+            {"id": "t3", "role": "tool", "content": "", "tool_call_id": "c1"},
+            # …and the model re-issues the same render call with a new id.
+            {"id": "a2", "role": "assistant", "content": "",
+             "tool_calls": [call("c3", "render_spending_summary")]},
+            {"id": "t4", "role": "tool", "content": "ok", "tool_call_id": "c3"},
+        ]
+    )
+    asyncio.run(store.save(scope="default", thread_id="main", snapshot=snapshot))
+
+    loaded = asyncio.run(store.get(scope="default", thread_id="main"))
+    assert [m["id"] for m in loaded.messages] == ["u1", "a1", "t1", "t2"]
+    # The duplicate render call (c3) and its result are gone; each surviving
+    # call has exactly one result.
+    assert [tc["id"] for tc in loaded.messages[1]["toolCalls"]] == ["c1", "c2"]
+    assert [(m["toolCallId"]) for m in loaded.messages if m["role"] == "tool"] == ["c1", "c2"]
+
+
+def test_clear_thread_endpoint(monkeypatch, engine, session):
+    store = _store(monkeypatch, engine)
+    assert clear_thread(session=session, _user="testadmin") == {"cleared": False}
+
+    snap = AGUIThreadSnapshot(messages=[{"id": "u1", "role": "user", "content": "x"}])
+    asyncio.run(store.save(scope="default", thread_id="main", snapshot=snap))
+
+    assert clear_thread(session=session, _user="testadmin") == {"cleared": True}
+    assert asyncio.run(store.get(scope="default", thread_id="main")) is None
+
+
+def test_drop_stale_client_history(session, monkeypatch, engine):
+    from app.main import _drop_stale_client_history
+
+    history = [
+        {"role": "user", "content": "vieja pregunta"},
+        {"role": "assistant", "content": "vieja respuesta"},
+        {"role": "tool", "content": "x", "toolCallId": "t1"},
+        {"role": "user", "content": "nueva pregunta"},
+    ]
+
+    # No stored snapshot for the thread → stale client: keep last user turn.
+    assert _drop_stale_client_history(session, "main", list(history)) == [
+        {"role": "user", "content": "nueva pregunta"}
+    ]
+
+    # Fresh conversation (no assistant/tool yet) passes through.
+    fresh = [{"role": "user", "content": "hola"}]
+    assert _drop_stale_client_history(session, "main", list(fresh)) == fresh
+
+    # Empty messages (hydration trigger) pass through.
+    assert _drop_stale_client_history(session, "main", []) == []
+
+    # With a stored snapshot the full history is legitimate.
+    store = _store(monkeypatch, engine)
+    asyncio.run(
+        store.save(
+            scope="default",
+            thread_id="main",
+            snapshot=AGUIThreadSnapshot(
+                messages=[{"id": "u1", "role": "user", "content": "hola"}]
+            ),
+        )
+    )
+    assert _drop_stale_client_history(session, "main", list(history)) == history

backend/tests/test_installments.py

@@ -0,0 +1,385 @@
+"""Tasa Cero installment plans: rounding, scheduling, budget exclusion,
+auto-detection at ingestion, regeneration, unconvert, and cascade behavior.
+
+Rounding and scheduling cases are pinned against real BAC Financiamientos
+data (2026-05/07). Endpoint functions are exercised directly with a session,
+same style as test_import_review_and_bulk.py.
+"""
+
+from datetime import datetime
+from decimal import Decimal
+
+import pytest
+from fastapi import HTTPException
+
+from app.api.v1.endpoints.installments import (
+    create_installment_plan,
+    delete_installment_plan,
+    get_installment_plan,
+    list_installment_plans,
+    update_installment_plan,
+)
+from app.api.v1.endpoints.transactions import (
+    BulkActionRequest,
+    bulk_action,
+    create_transaction,
+    delete_transaction,
+    update_transaction,
+)
+from app.models.models import (
+    Category,
+    InstallmentPlan,
+    InstallmentPlanCreate,
+    InstallmentPlanUpdate,
+    Transaction,
+    TransactionCreate,
+    TransactionSource,
+    TransactionType,
+    TransactionUpdate,
+)
+from app.services.budget_projection import (
+    compute_actuals_by_source,
+    get_cycle_range,
+)
+from app.services.installments import (
+    compute_installment_amounts,
+    compute_installment_dates,
+    is_tasa_cero_merchant,
+)
+from sqlmodel import select
+
+
+def make_cc_tx(
+    session,
+    merchant="CC  CONSTRUPLAZA",
+    amount="111053.60",
+    date=datetime(2026, 6, 25, 15, 43),
+    reference="75669363",
+    source=TransactionSource.CREDIT_CARD,
+    **kw,
+):
+    tx = Transaction(
+        amount=Decimal(amount),
+        merchant=merchant,
+        date=date,
+        reference=reference,
+        source=source,
+        **kw,
+    )
+    session.add(tx)
+    session.commit()
+    session.refresh(tx)
+    return tx
+
+
+def convert(session, tx, n=3, first=None):
+    return create_installment_plan(
+        InstallmentPlanCreate(
+            transaction_id=tx.id, num_installments=n, first_installment_date=first
+        ),
+        session=session,
+        _user="t",
+    )
+
+
+def get_cuotas(session, plan_id):
+    return session.exec(
+        select(Transaction)
+        .where(Transaction.installment_plan_id == plan_id)
+        .order_by(Transaction.date)
+    ).all()
+
+
+class TestRounding:
+    """Pinned against real BAC plans."""
+
+    @pytest.mark.parametrize(
+        "total,n,per,last",
+        [
+            ("111053.60", 3, "37017.80", "37018.00"),
+            ("425800.00", 6, "70966.60", "70967.00"),
+            ("98632.00", 3, "32877.30", "32877.40"),
+            ("190864.80", 3, "63621.60", "63621.60"),  # divides exactly
+        ],
+    )
+    def test_real_bac_plans(self, total, n, per, last):
+        amounts = compute_installment_amounts(Decimal(total), n)
+        assert amounts[:-1] == [Decimal(per)] * (n - 1)
+        assert amounts[-1] == Decimal(last)
+
+    def test_sum_invariant(self):
+        for total, n in [("100.00", 3), ("214800.00", 3), ("99999.99", 7)]:
+            amounts = compute_installment_amounts(Decimal(total), n)
+            assert sum(amounts) == Decimal(total)
+            assert len(amounts) == n
+
+
+class TestScheduling:
+    def test_first_before_cut_stays_in_purchase_cycle(self):
+        # 14/06 purchase (cycle 18/05-18/06) -> cuotas 19/06, 19/07
+        dates = compute_installment_dates(datetime(2026, 6, 14, 19, 22), 3)
+        assert dates == [
+            datetime(2026, 6, 14, 19, 22),
+            datetime(2026, 6, 19),
+            datetime(2026, 7, 19),
+        ]
+
+    def test_first_after_cut(self):
+        # 27/06 purchase (cycle 18/06-18/07) -> cuotas 19/07, 19/08
+        dates = compute_installment_dates(datetime(2026, 6, 27, 19, 43), 3)
+        assert dates == [
+            datetime(2026, 6, 27, 19, 43),
+            datetime(2026, 7, 19),
+            datetime(2026, 8, 19),
+        ]
+
+    def test_december_wrap(self):
+        dates = compute_installment_dates(datetime(2026, 12, 20), 3)
+        assert dates == [
+            datetime(2026, 12, 20),
+            datetime(2027, 1, 19),
+            datetime(2027, 2, 19),
+        ]
+
+    def test_consecutive_cycles(self):
+        """Each cuota lands in its own consecutive billing cycle."""
+        dates = compute_installment_dates(datetime(2026, 5, 5, 11, 19), 6)
+        cycles = []
+        for d in dates:
+            if d.day >= 18:
+                cy, cm = d.year, d.month
+            else:
+                cy, cm = (d.year, d.month - 1) if d.month > 1 else (d.year - 1, 12)
+            start, end = get_cycle_range(cy, cm)
+            assert start <= d < end
+            cycles.append((cy, cm))
+        assert cycles == [(2026, m) for m in range(4, 10)]
+
+
+class TestDetection:
+    @pytest.mark.parametrize(
+        "merchant,expected",
+        [
+            ("CC  CONSTRUPLAZA", True),
+            ("CC TILO.CO", True),
+            ("CONSTRUPLAZA S", False),
+            ("ALMACENES SIMAN", False),
+            ("MERCCADO", False),
+        ],
+    )
+    def test_merchant_regex(self, merchant, expected):
+        assert is_tasa_cero_merchant(merchant) is expected
+
+    def test_ingestion_auto_creates_plan(self, session):
+        tx = create_transaction(
+            TransactionCreate(
+                amount=Decimal("301614.60"),
+                merchant="CC  CONSTRUPLAZA",
+                date=datetime(2026, 6, 27, 19, 43),
+                reference="24724909",
+            ),
+            session=session,
+            _user="t",
+        )
+        assert tx.is_installment_anchor is True
+        plan = session.exec(
+            select(InstallmentPlan).where(
+                InstallmentPlan.anchor_transaction_id == tx.id
+            )
+        ).one()
+        assert plan.num_installments == 3
+        assert plan.first_installment_date == tx.date
+        cuotas = get_cuotas(session, plan.id)
+        assert [c.amount for c in cuotas] == [
+            Decimal("100538.20"),
+            Decimal("100538.20"),
+            Decimal("100538.20"),
+        ]
+        assert cuotas[0].merchant == "CC CONSTRUPLAZA CUOTA:01/03"
+        assert cuotas[0].reference == "24724909-C01"
+        assert all(c.installment_plan_id == plan.id for c in cuotas)
+
+    @pytest.mark.parametrize(
+        "kw",
+        [
+            {"merchant": "WALMART"},
+            {"transaction_type": TransactionType.DEVOLUCION},
+            {"source": TransactionSource.CASH},
+        ],
+    )
+    def test_ingestion_ignores_non_tasa_cero(self, session, kw):
+        data = dict(
+            amount=Decimal("1000"),
+            merchant="CC  CONSTRUPLAZA",
+            date=datetime(2026, 6, 1),
+        )
+        data.update(kw)
+        tx = create_transaction(
+            TransactionCreate(**data), session=session, _user="t"
+        )
+        assert tx.is_installment_anchor is False
+        assert session.exec(select(InstallmentPlan)).all() == []
+
+    def test_duplicate_reference_still_409_and_creates_nothing(self, session):
+        make_cc_tx(session)
+        with pytest.raises(HTTPException) as exc:
+            create_transaction(
+                TransactionCreate(
+                    amount=Decimal("1"),
+                    merchant="CC  CONSTRUPLAZA",
+                    date=datetime(2026, 7, 1),
+                    reference="75669363",
+                ),
+                session=session,
+                _user="t",
+            )
+        assert exc.value.status_code == 409
+        assert session.exec(select(InstallmentPlan)).all() == []
+
+
+class TestBudgetExclusion:
+    def test_anchor_excluded_cuotas_counted_per_month(self, session):
+        tx = make_cc_tx(session, date=datetime(2026, 6, 25))
+        convert(session, tx)  # cuotas: 25/06, 19/07, 19/08
+        # Budget month = cycle ENDING on its 18th: 25/06 -> July, 19/07 -> Aug,
+        # 19/08 -> Sep. The full 111,053.60 must appear nowhere.
+        by_month = {
+            m: compute_actuals_by_source(session, 2026, m)["CREDIT_CARD"]["net"]
+            for m in (6, 7, 8, 9, 10)
+        }
+        assert by_month[6] == 0
+        assert by_month[7] == pytest.approx(37017.80)
+        assert by_month[8] == pytest.approx(37017.80)
+        assert by_month[9] == pytest.approx(37018.00)
+        assert by_month[10] == 0
+
+    def test_cuotas_inherit_anchor_category(self, session):
+        cat = Category(name="Ferretería")
+        session.add(cat)
+        session.commit()
+        tx = make_cc_tx(session, category_id=cat.id)
+        plan = convert(session, tx)
+        assert all(
+            c.category_id == cat.id for c in get_cuotas(session, plan.id)
+        )
+
+
+class TestPlanLifecycle:
+    def test_manual_convert_validations(self, session):
+        tx = make_cc_tx(session)
+        convert(session, tx)
+        # already converted
+        with pytest.raises(HTTPException) as exc:
+            convert(session, tx)
+        assert exc.value.status_code == 409
+        # a cuota cannot itself be converted
+        cuota = session.exec(
+            select(Transaction).where(Transaction.installment_plan_id.is_not(None))
+        ).first()
+        with pytest.raises(HTTPException) as exc:
+            convert(session, cuota)
+        assert exc.value.status_code == 400
+        # non-CC rejected
+        cash = make_cc_tx(
+            session, reference="r-cash", source=TransactionSource.CASH
+        )
+        with pytest.raises(HTTPException) as exc:
+            convert(session, cash)
+        assert exc.value.status_code == 400
+
+    def test_regenerate_3_to_6(self, session):
+        tx = make_cc_tx(session, amount="425800.00", reference="58710871")
+        plan = convert(session, tx)
+        updated = update_installment_plan(
+            plan.id,
+            InstallmentPlanUpdate(
+                num_installments=6,
+                first_installment_date=datetime(2026, 5, 19),
+            ),
+            session=session,
+            _user="t",
+        )
+        assert updated.num_installments == 6
+        assert updated.installment_amount == pytest.approx(70966.60)
+        assert updated.last_installment_amount == pytest.approx(70967.00)
+        cuotas = get_cuotas(session, plan.id)
+        assert len(cuotas) == 6
+        assert cuotas[0].date == datetime(2026, 5, 19)
+        assert cuotas[-1].date == datetime(2026, 10, 19)
+        assert cuotas[0].reference == "58710871-C01"
+        assert cuotas[-1].merchant == "CC CONSTRUPLAZA CUOTA:06/06"
+
+    def test_unconvert_restores_anchor(self, session):
+        tx = make_cc_tx(session)
+        plan = convert(session, tx)
+        delete_installment_plan(plan.id, session=session, _user="t")
+        session.refresh(tx)
+        assert tx.is_installment_anchor is False
+        assert get_cuotas(session, plan.id) == []
+        assert session.exec(select(InstallmentPlan)).all() == []
+
+    def test_delete_anchor_tears_down_plan(self, session):
+        tx = make_cc_tx(session)
+        plan = convert(session, tx)
+        delete_transaction(tx.id, session=session, _user="t")
+        assert session.exec(select(InstallmentPlan)).all() == []
+        assert get_cuotas(session, plan.id) == []
+
+    def test_bulk_delete_anchor_tears_down_plan(self, session):
+        tx = make_cc_tx(session)
+        convert(session, tx)
+        bulk_action(
+            BulkActionRequest(ids=[tx.id], action="delete"),
+            session=session,
+            _user="t",
+        )
+        assert session.exec(select(InstallmentPlan)).all() == []
+        assert session.exec(select(Transaction)).all() == []
+
+    def test_list_and_detail(self, session):
+        tx = make_cc_tx(session, date=datetime(2026, 5, 12, 15, 41))
+        convert(session, tx, first=datetime(2026, 5, 19))
+        resp = list_installment_plans(session=session, _user="t")
+        assert len(resp.plans) == 1
+        plan = resp.plans[0]
+        assert plan.merchant == "CC  CONSTRUPLAZA"
+        assert plan.total_amount == pytest.approx(111053.60)
+        assert plan.remaining_amount + plan.paid_amount == pytest.approx(
+            111053.60
+        )
+        assert resp.total_remaining == pytest.approx(plan.remaining_amount)
+        detail = get_installment_plan(plan.id, session=session, _user="t")
+        assert len(detail.cuotas) == 3
+
+
+class TestDeferredGuards:
+    def test_patch_cuota_deferred_rejected(self, session):
+        tx = make_cc_tx(session)
+        plan = convert(session, tx)
+        cuota = get_cuotas(session, plan.id)[0]
+        with pytest.raises(HTTPException) as exc:
+            update_transaction(
+                cuota.id,
+                TransactionUpdate(deferred_to_next_cycle=True),
+                session=session,
+                _user="t",
+            )
+        assert exc.value.status_code == 400
+
+    def test_bulk_set_deferred_skips_cuotas(self, session):
+        tx = make_cc_tx(session)
+        plan = convert(session, tx)
+        cuota = get_cuotas(session, plan.id)[0]
+        normal = make_cc_tx(session, merchant="WALMART", reference="w1")
+        resp = bulk_action(
+            BulkActionRequest(
+                ids=[cuota.id, normal.id], action="set_deferred", deferred=True
+            ),
+            session=session,
+            _user="t",
+        )
+        assert resp["affected"] == 1
+        session.refresh(cuota)
+        session.refresh(normal)
+        assert cuota.deferred_to_next_cycle is False
+        assert normal.deferred_to_next_cycle is True

docker-compose.prod.yml

@@ -16,6 +16,11 @@ services:
       interval: 10s
       timeout: 5s
       retries: 5
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "5"
 
   backend:
     build:
@@ -31,11 +36,17 @@ services:
       VAPID_PRIVATE_KEY: ${VAPID_PRIVATE_KEY}
       VAPID_PUBLIC_KEY: ${VAPID_PUBLIC_KEY}
       OPENAI_API_KEY: ${OPENAI_API_KEY}
-      AGENT_MODEL: ${AGENT_MODEL:-gpt-5.4-mini}
+      AGENT_MODEL: ${AGENT_MODEL:-gpt-5.6-luna}
+      # MAF 1.6+ enables OTel instrumentation by default; keep it off explicitly.
+      ENABLE_INSTRUMENTATION: "false"
     expose:
       - "8000"
     networks:
-      - wealthysmart-network
+      wealthysmart-network:
+        # Avoid the generic `backend` name, which is also used on the shared
+        # nginx network by another application.
+        aliases:
+          - wealthysmart-api
     depends_on:
       db:
         condition: service_healthy
@@ -45,6 +56,11 @@ services:
       timeout: 5s
       retries: 3
       start_period: 10s
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "5"
 
   frontend:
     build:
@@ -57,8 +73,8 @@ services:
     restart: unless-stopped
     environment:
       NODE_ENV: production
-      BACKEND_URL: http://wealthysmart-backend-prod:8000
+      BACKEND_URL: http://wealthysmart-api:8000
-      AGENT_URL: http://wealthysmart-backend-prod:8000/api/v1/agent/agui
+      AGENT_URL: http://wealthysmart-api:8000/api/v1/agent/agui
       JWT_SECRET: ${SECRET_KEY}
       COOKIE_DOMAIN: wealth.cescalante.dev
       COOKIE_SECURE: "true"
@@ -78,6 +94,11 @@ services:
       interval: 30s
       timeout: 10s
       retries: 3
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "5"
 
 networks:
   wealthysmart-network:

docker-compose.yml

@@ -15,6 +15,11 @@ services:
       interval: 5s
       timeout: 3s
       retries: 5
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "5"
 
   backend:
     build:
@@ -30,7 +35,9 @@ services:
       VAPID_PRIVATE_KEY: ${VAPID_PRIVATE_KEY:-}
       VAPID_PUBLIC_KEY: ${VAPID_PUBLIC_KEY:-}
       OPENAI_API_KEY: ${OPENAI_API_KEY:-}
-      AGENT_MODEL: ${AGENT_MODEL:-gpt-5.4-mini}
+      AGENT_MODEL: ${AGENT_MODEL:-gpt-5.6-luna}
+      # MAF 1.6+ enables OTel instrumentation by default; keep it off explicitly.
+      ENABLE_INSTRUMENTATION: "false"
     ports:
       - "8001:8000"
     volumes:
@@ -38,6 +45,11 @@ services:
     depends_on:
       db:
         condition: service_healthy
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "5"
     develop:
       watch:
         - path: ./backend/app
@@ -58,9 +70,17 @@ services:
       - "5175:3000"
     environment:
       NODE_ENV: development
+      # Vite runs inside this container, so localhost would refer to the
+      # frontend rather than the Python service.
+      BACKEND_URL: http://backend:8000
       AGENT_URL: http://backend:8000/api/v1/agent/agui
     depends_on:
       - backend
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "5"
     develop:
       watch:
         - path: ./frontend/src

frontend/Dockerfile

@@ -22,7 +22,9 @@ WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 # Cap node heap so a build on a small VPS can't OOM-kill neighbours.
-ENV NODE_OPTIONS=--max-old-space-size=1536
+# 1536 stopped being enough at the 2026-07 UI revamp (cmdk, day-picker,
+# chart wrappers); rollup now peaks between 1.5G and 2G.
+ENV NODE_OPTIONS=--max-old-space-size=2048
 RUN corepack enable && pnpm build
 
 # Production: Hono serves dist/ + /api/copilotkit on port 3000

frontend/components.json

@@ -20,6 +20,5 @@
     "hooks": "@/hooks"
   },
   "menuColor": "default-translucent",
-  "menuAccent": "subtle",
+  "menuAccent": "subtle"
-  "registries": {}
 }

frontend/e2e/asistente.spec.ts

@@ -0,0 +1,113 @@
+import { expect, test, type Page } from "@playwright/test";
+
+test.setTimeout(150_000);
+
+async function startFreshAssistant(page: Page) {
+  await page.goto("/login");
+  await page.getByLabel("Username").fill(process.env.ADMIN_USERNAME!);
+  await page.getByLabel("Password").fill(process.env.ADMIN_PASSWORD!);
+  await page.getByRole("button", { name: /sign in/i }).click();
+  await page.waitForURL("/");
+
+  const initialConnect = page.waitForResponse((response) => {
+    if (!response.url().includes("/api/copilotkit") || response.request().method() !== "POST") {
+      return false;
+    }
+    try {
+      return JSON.parse(response.request().postData() ?? "{}").method === "agent/connect";
+    } catch {
+      return false;
+    }
+  });
+  await page.goto("/asistente");
+  await expect(page.getByRole("heading", { name: "Asistente" })).toBeVisible();
+  await (await initialConnect).finished();
+
+  const newConversation = page.getByRole("button", { name: "Nueva conversación" });
+  if (await newConversation.isEnabled()) {
+    await newConversation.click();
+    const reconnect = page.waitForResponse((response) => {
+      if (!response.url().includes("/api/copilotkit") || response.request().method() !== "POST") {
+        return false;
+      }
+      try {
+        return JSON.parse(response.request().postData() ?? "{}").method === "agent/connect";
+      } catch {
+        return false;
+      }
+    });
+    await page.getByRole("button", { name: "Borrar historial" }).click();
+    await (await reconnect).finished();
+    await expect(
+      page.getByRole("textbox", { name: "Escribe tu pregunta…" }),
+    ).toBeEnabled({ timeout: 30_000 });
+  }
+}
+
+async function ask(page: Page, question: string, expectedTool: string) {
+  // The BFF response is the exact CopilotKit stream consumed by the browser.
+  // Checking it catches server-side RUN_ERROR events even if the UI changes.
+  const stream = page.waitForResponse(
+    (response) => {
+      if (
+        !response.url().includes("/api/copilotkit") ||
+        response.request().method() !== "POST"
+      ) {
+        return false;
+      }
+      try {
+        return JSON.parse(response.request().postData() ?? "{}").method === "agent/run";
+      } catch {
+        return false;
+      }
+    },
+  );
+  const composer = page.getByRole("textbox", { name: "Escribe tu pregunta…" });
+  await expect(composer).toBeEnabled({ timeout: 30_000 });
+  await composer.fill(question);
+  const sendButton = page.getByTestId("copilot-send-button");
+  await expect(sendButton).toBeEnabled({ timeout: 30_000 });
+  await sendButton.click();
+  await expect(page.getByText(question, { exact: true }).last()).toBeVisible();
+
+  const response = await stream;
+  await response.finished();
+  const events = await response.text();
+  expect(events).not.toContain("RUN_ERROR");
+  expect(events).toContain(expectedTool);
+
+  // The HTTP stream may finish before CopilotKit has committed the tool run
+  // and released its client-side running state. Waiting for the page action
+  // avoids losing the next Enter keypress during that short interval.
+  await expect(page.getByRole("button", { name: "Nueva conversación" })).toBeEnabled({
+    timeout: 30_000,
+  });
+}
+
+test("Asistente completes Luna's read-only tool flows", async ({ page }) => {
+  const consoleErrors: string[] = [];
+  page.on("console", (message) => {
+    if (message.type() === "error") consoleErrors.push(message.text());
+  });
+
+  await startFreshAssistant(page);
+
+  await ask(page, "What date is it today?", "get_current_date");
+  await ask(page, "List my last 10 transactions.", "get_recent_transactions");
+  await ask(page, "What is my net worth?", "get_net_worth");
+  await ask(page, "How much did I spend today?", "get_daily_spending");
+  await ask(page, "Show my spending by category this month.", "render_spending_summary");
+
+  const spendingCard = page.getByTestId("spending-summary-card");
+  await expect(spendingCard).toBeVisible({ timeout: 30_000 });
+  await expect(page.getByRole("textbox", { name: "Escribe tu pregunta…" })).toBeEnabled({
+    timeout: 30_000,
+  });
+
+  await page.reload();
+  await expect(page.getByRole("heading", { name: "Asistente" })).toBeVisible();
+  await expect(page.getByText("Show my spending by category this month.", { exact: true })).toBeVisible();
+  await expect(page.getByTestId("spending-summary-card")).toBeVisible();
+
+  expect(consoleErrors.join("\n")).not.toContain("ChatClientException");
+});

frontend/e2e/feature-doc.ts

@@ -0,0 +1,127 @@
+import fs from "node:fs";
+import path from "node:path";
+import { test, type Page, type TestInfo } from "@playwright/test";
+import * as narration from "./narration";
+import { renderFinalVideo } from "./video-render";
+import type { Clip } from "./subtitles";
+
+const DEMO = !!process.env.PW_DEMO;
+
+/**
+ * Wraps test.step() so every step of a demo spec produces a captioned
+ * screenshot, and — in PW_DEMO mode — a native Playwright screencast
+ * recording with cursor annotations, chapter-title cards, burned-in
+ * subtitles and (when `say` is available) spoken Spanish narration.
+ * Screenshots/video/subtitles land in e2e-docs/<slug>/ and are also
+ * attached to the Playwright HTML report; save() stitches everything into
+ * a Markdown walkthrough that can be published as-is.
+ */
+export class FeatureDoc {
+  private steps: { title: string; caption: string; file: string }[] = [];
+  private clips: Clip[] = [];
+  private readonly dir: string;
+  private recordingStartedAt = 0;
+
+  constructor(
+    private page: Page,
+    private testInfo: TestInfo,
+    private slug: string,
+    private title: string,
+    private intro: string,
+  ) {
+    this.dir = path.resolve("e2e-docs", slug);
+    fs.rmSync(this.dir, { recursive: true, force: true });
+    fs.mkdirSync(this.dir, { recursive: true });
+  }
+
+  /** Starts the native screencast recording. Call before the first step(). */
+  async start() {
+    if (!DEMO) return;
+    this.recordingStartedAt = Date.now();
+    await this.page.screencast.start({
+      path: path.join(this.dir, "raw.webm"),
+      size: { width: 1920, height: 1080 },
+    });
+    await this.page.screencast.showActions({ cursor: "pointer" });
+  }
+
+  async step(title: string, caption: string, fn: () => Promise<void>) {
+    const narrationPromise = DEMO
+      ? narration.synthesize(caption, this.testInfo.outputDir, this.clips.length)
+      : Promise.resolve(null);
+
+    const stepStart = Date.now();
+    if (DEMO) {
+      await this.page.screencast.showChapter(title, { description: caption, duration: 1500 });
+    }
+
+    await test.step(title, fn);
+
+    const narrationResult = await narrationPromise;
+    if (DEMO) {
+      const elapsed = Date.now() - stepStart;
+      const target = (narrationResult?.durationMs ?? 0) + 300;
+      if (target > elapsed) await this.page.waitForTimeout(target - elapsed);
+    }
+
+    const file = `${String(this.steps.length + 1).padStart(2, "0")}-${title
+      .toLowerCase()
+      .normalize("NFD")
+      .replace(/[̀-ͯ]+/g, "")
+      .replace(/[^a-z0-9]+/g, "-")
+      .replace(/^-|-$/g, "")}.png`;
+    const body = await this.page.screenshot({
+      path: path.join(this.dir, file),
+      animations: "disabled",
+    });
+    await this.testInfo.attach(title, { body, contentType: "image/png" });
+    this.steps.push({ title, caption, file });
+
+    if (DEMO) {
+      this.clips.push({
+        title,
+        caption,
+        file,
+        startMs: stepStart - this.recordingStartedAt,
+        endMs: Date.now() - this.recordingStartedAt,
+        narration: narrationResult,
+      });
+    }
+  }
+
+  async save() {
+    let videoName = "video.mp4";
+    if (DEMO) {
+      await this.page.screencast.stop();
+      const { videoFile, degraded } = await renderFinalVideo({
+        rawWebmPath: path.join(this.dir, "raw.webm"),
+        clips: this.clips,
+        outDir: this.dir,
+      });
+      for (const warning of degraded) console.warn(`[${this.slug}] ${warning}`);
+      videoName = path.basename(videoFile);
+      await this.testInfo.attach("video", {
+        path: videoFile,
+        contentType: videoName.endsWith(".mp4") ? "video/mp4" : "video/webm",
+      });
+    }
+
+    const md = [
+      `# ${this.title}`,
+      "",
+      this.intro,
+      "",
+      `> Generado automáticamente por \`${path.basename(this.testInfo.file)}\` — ${this.steps.length} pasos. El video completo del recorrido está en [${videoName}](${videoName}).`,
+      "",
+      ...this.steps.flatMap((s, i) => [
+        `## ${i + 1}. ${s.title}`,
+        "",
+        s.caption,
+        "",
+        `![${s.title}](${s.file})`,
+        "",
+      ]),
+    ].join("\n");
+    fs.writeFileSync(path.join(this.dir, "index.md"), md);
+  }
+}

frontend/e2e/financiamientos-demo.spec.ts

@@ -0,0 +1,102 @@
+import { test, expect } from "@playwright/test";
+import { FeatureDoc } from "./feature-doc";
+
+/**
+ * Demo walkthrough of the Financiamientos (Tasa Cero) feature. Doubles as an
+ * e2e smoke test and as the generator for e2e-docs/financiamientos/ — a
+ * captioned, screenshot-per-step Markdown doc plus the full video (native
+ * cursor/chapters, burned-in subtitles, spoken narration) in the Playwright
+ * HTML report.
+ */
+// NOTE: do not `test.use({ video: "off" })` here — disabling the fixture
+// video breaks page.screencast's internal sizing (verified: it then records
+// a shrunken frame letterboxed inside the requested canvas). The fixture's
+// own video ends up redundant/unused but harmless.
+
+test("@demo Financiamientos — compras Tasa Cero en cuotas", async ({ page }, testInfo) => {
+  const doc = new FeatureDoc(
+    page,
+    testInfo,
+    "financiamientos",
+    "Financiamientos — Tasa Cero",
+    "WealthySmart trackea las compras BAC Tasa Cero como planes de cuotas mensuales: cada cuota futura ya cuenta en el presupuesto del mes que le toca, en lugar de registrar la compra como un solo pago.",
+  );
+  await doc.start();
+
+  await doc.step(
+    "Iniciar sesión",
+    "El acceso está protegido con usuario y contraseña; la sesión vive en una cookie HTTP-only.",
+    async () => {
+      await page.goto("/login");
+      // CopilotKit mounts its dev web-inspector in dev builds; keep it out of
+      // the recording — it isn't part of the product.
+      await page.addStyleTag({ content: "cpk-web-inspector { display: none !important; }" });
+      await page.getByLabel("Username").fill(process.env.ADMIN_USERNAME!);
+      await page.getByLabel("Password").fill(process.env.ADMIN_PASSWORD!);
+      await expect(page.getByRole("button", { name: /sign in/i })).toBeEnabled();
+    },
+  );
+
+  await doc.step(
+    "Panel de inicio",
+    "Después del login se llega al dashboard Inicio, con el resumen del mes y la navegación lateral por módulos.",
+    async () => {
+      await page.getByRole("button", { name: /sign in/i }).click();
+      await page.waitForURL("/");
+      await expect(page.getByRole("link", { name: "Financiamientos", exact: true })).toBeVisible();
+      await page.waitForLoadState("networkidle");
+    },
+  );
+
+  await doc.step(
+    "Modo privacidad",
+    "El botón de privacidad difumina todos los montos sensibles — útil para compartir pantalla (y para este demo).",
+    async () => {
+      await page.getByRole("button", { name: "Toggle privacy mode" }).click();
+      await expect(page.locator("html")).toHaveClass(/privacy/);
+    },
+  );
+
+  await doc.step(
+    "Página de Financiamientos",
+    "El módulo resume todos los planes Tasa Cero: saldo faltante total, cuánto suman las cuotas de los planes activos cada mes, y cuántos planes siguen vivos.",
+    async () => {
+      await page.getByRole("link", { name: "Financiamientos", exact: true }).click();
+      await page.waitForURL("/financiamientos");
+      await expect(page.getByText("Saldo faltante total")).toBeVisible();
+      await expect(page.getByText("Cuotas por mes (activos)")).toBeVisible();
+      await page.waitForLoadState("networkidle");
+    },
+  );
+
+  await doc.step(
+    "Tabla de planes",
+    "Cada plan muestra el comercio, el avance de cuotas (facturadas vs. totales), el monto de la cuota, el saldo que falta y cuándo cae la próxima cuota.",
+    async () => {
+      const rows = page.getByRole("button", { name: /editar plan de/i });
+      await expect(rows.first()).toBeVisible();
+      expect(await rows.count()).toBeGreaterThan(0);
+      await expect(page.getByRole("columnheader", { name: "Próxima cuota" })).toBeVisible();
+    },
+  );
+
+  await doc.step(
+    "Detalle de un plan",
+    "Al hacer clic en un plan se abre su detalle editable: fecha ancla, número de cuotas y monto. Desde aquí también se puede deshacer la conversión a Tasa Cero.",
+    async () => {
+      await page.getByRole("button", { name: /editar plan de/i }).first().click();
+      await expect(page.getByRole("heading", { name: "Editar plan Tasa Cero" })).toBeVisible();
+    },
+  );
+
+  await doc.step(
+    "Cerrar el detalle",
+    "El plan queda igual que estaba — el recorrido es de solo lectura.",
+    async () => {
+      await page.keyboard.press("Escape");
+      await expect(page.getByRole("heading", { name: "Editar plan Tasa Cero" })).toBeHidden();
+    },
+  );
+
+  await doc.save();
+});

frontend/e2e/narration.ts

@@ -0,0 +1,59 @@
+import { execFile, execFileSync } from "node:child_process";
+import fs from "node:fs";
+import path from "node:path";
+import { promisify } from "node:util";
+
+const execFileAsync = promisify(execFile);
+
+let sayChecked = false;
+let sayAvailable = false;
+
+function hasSay() {
+  if (!sayChecked) {
+    sayChecked = true;
+    try {
+      execFileSync("say", ["-v", "?"], { stdio: "ignore" });
+      sayAvailable = true;
+    } catch {
+      console.warn("`say` not found — skipping TTS narration (subtitles still work).");
+    }
+  }
+  return sayAvailable;
+}
+
+const cache = new Map<string, Promise<{ path: string; durationMs: number } | null>>();
+
+/** Synthesizes Spanish narration for a caption via macOS `say`. Returns null (never throws) if unavailable. */
+export function synthesize(
+  text: string,
+  outDir: string,
+  index: number,
+  voice = "Paulina",
+): Promise<{ path: string; durationMs: number } | null> {
+  const key = `${voice}:${text}`;
+  const cached = cache.get(key);
+  if (cached) return cached;
+
+  const promise = (async () => {
+    if (!hasSay()) return null;
+    fs.mkdirSync(outDir, { recursive: true });
+    const file = path.join(outDir, `narration-${String(index).padStart(2, "0")}.aiff`);
+    try {
+      await execFileAsync("say", ["-v", voice, "-o", file, text]);
+      const { stdout } = await execFileAsync("ffprobe", [
+        "-v", "error",
+        "-show_entries", "format=duration",
+        "-of", "csv=p=0",
+        file,
+      ]);
+      const durationMs = Math.round(parseFloat(stdout.trim()) * 1000);
+      return { path: file, durationMs };
+    } catch (err) {
+      console.warn(`Narration synthesis failed for "${text.slice(0, 40)}…": ${err}`);
+      fs.rmSync(file, { force: true });
+      return null;
+    }
+  })();
+  cache.set(key, promise);
+  return promise;
+}

frontend/e2e/subtitles.ts

@@ -0,0 +1,33 @@
+export interface Clip {
+  title: string;
+  caption: string;
+  file: string;
+  startMs: number;
+  endMs: number;
+  narration: { path: string; durationMs: number } | null;
+}
+
+export function msToSrtTimestamp(ms: number): string {
+  const clamped = Math.max(0, Math.round(ms));
+  const hours = Math.floor(clamped / 3_600_000);
+  const minutes = Math.floor((clamped % 3_600_000) / 60_000);
+  const seconds = Math.floor((clamped % 60_000) / 1000);
+  const millis = clamped % 1000;
+  const pad = (n: number, len = 2) => String(n).padStart(len, "0");
+  return `${pad(hours)}:${pad(minutes)}:${pad(seconds)},${pad(millis, 3)}`;
+}
+
+/** One subtitle cue per step, spanning its full on-screen duration. */
+export function buildSrt(clips: Clip[]): string {
+  return clips
+    .map((clip, i) => {
+      const index = i + 1;
+      return [
+        String(index),
+        `${msToSrtTimestamp(clip.startMs)} --> ${msToSrtTimestamp(clip.endMs)}`,
+        clip.caption,
+        "",
+      ].join("\n");
+    })
+    .join("\n");
+}

frontend/e2e/video-render.ts

@@ -0,0 +1,88 @@
+import { execFile, execFileSync } from "node:child_process";
+import fs from "node:fs";
+import path from "node:path";
+import { promisify } from "node:util";
+import { buildSrt, type Clip } from "./subtitles";
+
+const execFileAsync = promisify(execFile);
+
+function hasFfmpeg() {
+  try {
+    execFileSync("ffmpeg", ["-version"], { stdio: "ignore" });
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+const SUBTITLE_STYLE =
+  "FontSize=22,PrimaryColour=&H00FFFFFF,BackColour=&H80000000,BorderStyle=3,Outline=1,Shadow=0,MarginV=40";
+
+function escapeForFilter(p: string) {
+  // ffmpeg filter arguments treat ':' and '\' specially — escape both.
+  return p.replace(/\\/g, "\\\\").replace(/:/g, "\\:");
+}
+
+export async function renderFinalVideo({
+  rawWebmPath,
+  clips,
+  outDir,
+}: {
+  rawWebmPath: string;
+  clips: Clip[];
+  outDir: string;
+}): Promise<{ videoFile: string; degraded: string[] }> {
+  const degraded: string[] = [];
+  const srtPath = path.join(outDir, "captions.srt");
+  fs.writeFileSync(srtPath, buildSrt(clips));
+
+  if (!hasFfmpeg()) {
+    const dest = path.join(outDir, "video.webm");
+    fs.renameSync(rawWebmPath, dest);
+    degraded.push("ffmpeg not found — kept raw video.webm, no subtitles burned in, no narration.");
+    return { videoFile: dest, degraded };
+  }
+
+  const narrated = clips.filter((c) => c.narration);
+  const mp4Path = path.join(outDir, "video.mp4");
+  const srtArg = `subtitles=${escapeForFilter(srtPath)}:force_style='${SUBTITLE_STYLE}'`;
+
+  if (narrated.length === 0) {
+    degraded.push("No narration available — burned-in subtitles only.");
+    await execFileAsync("ffmpeg", [
+      "-y", "-i", rawWebmPath,
+      "-vf", srtArg,
+      "-c:v", "libx264", "-crf", "20", "-pix_fmt", "yuv420p",
+      "-movflags", "+faststart",
+      "-an",
+      mp4Path,
+    ]);
+  } else {
+    const audioInputs = narrated.flatMap((c) => ["-i", c.narration!.path]);
+    const adelayParts = narrated.map(
+      (c, i) => `[${i + 1}:a]adelay=${Math.max(0, Math.round(c.startMs))}|${Math.max(0, Math.round(c.startMs))}[a${i}]`,
+    );
+    const mixInputs = narrated.map((_, i) => `[a${i}]`).join("");
+    const filterComplex = [
+      `[0:v]${srtArg}[vout]`,
+      ...adelayParts,
+      `${mixInputs}amix=inputs=${narrated.length}:normalize=0[aout]`,
+    ].join(";");
+
+    await execFileAsync("ffmpeg", [
+      "-y", "-i", rawWebmPath, ...audioInputs,
+      "-filter_complex", filterComplex,
+      "-map", "[vout]", "-map", "[aout]",
+      "-c:v", "libx264", "-crf", "20", "-pix_fmt", "yuv420p",
+      "-c:a", "aac",
+      "-shortest",
+      "-movflags", "+faststart",
+      mp4Path,
+    ]);
+  }
+
+  fs.rmSync(rawWebmPath, { force: true });
+  for (const c of narrated) fs.rmSync(c.narration!.path, { force: true });
+
+  return { videoFile: mp4Path, degraded };
+}

frontend/package.json

@@ -9,14 +9,16 @@
     "build": "vite build",
     "preview": "tsx server.ts",
     "typecheck": "tsc --noEmit",
+    "e2e": "playwright test",
+    "demo": "PW_DEMO=1 playwright test --grep @demo",
     "gen:api": "openapi-typescript openapi.json -o src/lib/api-types.gen.ts"
   },
   "dependencies": {
-    "@ag-ui/client": "0.0.52",
+    "@ag-ui/client": "0.0.57",
     "@base-ui/react": "^1.4.1",
-    "@copilotkit/react-core": "1.56.4",
+    "@copilotkit/react-core": "1.62.3",
-    "@copilotkit/react-ui": "1.56.4",
+    "@copilotkit/react-ui": "1.62.3",
-    "@copilotkit/runtime": "1.56.4",
+    "@copilotkit/runtime": "1.62.3",
     "@fontsource-variable/ibm-plex-sans": "^5.2.8",
     "@fontsource-variable/noto-sans": "^5.2.10",
     "@hono/node-server": "^1.14.4",
@@ -24,13 +26,16 @@
     "@tanstack/react-table": "^8.21.3",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "cmdk": "^1.1.1",
     "concurrently": "^9.1.2",
+    "date-fns": "^4.4.0",
     "hono": "^4.12.15",
     "lucide-react": "^1.12.0",
     "react": "19.2.5",
+    "react-day-picker": "^10.0.1",
     "react-dom": "19.2.5",
     "react-router-dom": "^7.6.0",
-    "recharts": "^3.8.1",
+    "recharts": "^3.8.0",
     "rxjs": "^7.8.1",
     "sonner": "^2.0.7",
     "tailwind-merge": "^3.5.0",
@@ -38,14 +43,15 @@
     "tw-animate-css": "^1.4.0"
   },
   "devDependencies": {
+    "@playwright/test": "^1.61.1",
     "@tailwindcss/vite": "^4",
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
-    "@vitejs/plugin-react-swc": "^3.9.0",
+    "@vitejs/plugin-react-oxc": "^0.4.3",
     "openapi-typescript": "^7.13.0",
     "tailwindcss": "^4",
     "typescript": "^5",
-    "vite": "^6.3.5"
+    "vite": "npm:rolldown-vite@latest"
   }
 }

frontend/playwright.config.ts

@@ -0,0 +1,52 @@
+import fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { defineConfig } from "@playwright/test";
+
+// Demo specs log in with the real dev credentials; pull them from the repo
+// .env so they never live in the test source.
+const repoEnv = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../.env");
+if (fs.existsSync(repoEnv)) {
+  for (const line of fs.readFileSync(repoEnv, "utf8").split("\n")) {
+    const m = line.match(/^([A-Z_]+)=["']?(.*?)["']?$/);
+    if (m && !(m[1] in process.env)) process.env[m[1]] = m[2];
+  }
+}
+
+export default defineConfig({
+  testDir: "./e2e",
+  outputDir: "./test-results",
+  fullyParallel: false,
+  // Demo runs synthesize narration and run several ffmpeg passes in save();
+  // that can exceed the 30s default, especially with many steps.
+  timeout: process.env.PW_DEMO ? 120_000 : 30_000,
+  reporter: [
+    ["list"],
+    ["html", { outputFolder: "playwright-report", open: "never" }],
+  ],
+  use: {
+    baseURL: "http://localhost:3000",
+    // Demo runs (pnpm demo) pace every action so the recorded video is
+    // watchable by a human; functional e2e runs stay at full speed.
+    launchOptions: {
+      slowMo: process.env.PW_DEMO ? 500 : 0,
+    },
+    locale: "es-CR",
+    timezoneId: "America/Costa_Rica",
+    viewport: { width: 1920, height: 1080 },
+    // Retina-density rendering so doc screenshots stay crisp when zoomed.
+    deviceScaleFactor: 2,
+    // Full recordings are only useful for the paced demo. Keeping them off
+    // for regular e2e avoids making test success depend on artifact uploads.
+    video: process.env.PW_DEMO ? { mode: "on", size: { width: 1920, height: 1080 } } : "off",
+    screenshot: "only-on-failure",
+    trace: process.env.PW_DEMO ? "on" : "on-first-retry",
+  },
+  webServer: {
+    command: "pnpm dev",
+    url: "http://localhost:3000",
+    reuseExistingServer: true,
+    stdout: "ignore",
+    timeout: 60_000,
+  },
+});

frontend/server.ts

@@ -1,18 +1,20 @@
 import { serve } from "@hono/node-server";
 import { serveStatic } from "@hono/node-server/serve-static";
 import {
+  AgentRunner,
   CopilotRuntime,
-  ExperimentalEmptyAdapter,
+  createCopilotRuntimeHandler,
-  copilotRuntimeNextJSAppRouterEndpoint,
+} from "@copilotkit/runtime/v2";
-} from "@copilotkit/runtime";
 import { HttpAgent, Middleware, EventType } from "@ag-ui/client";
-import { Observable } from "rxjs";
+import { Observable, ReplaySubject } from "rxjs";
 import { Hono } from "hono";
 
-const AGENT_URL =
-  process.env.AGENT_URL ?? "http://backend:8000/api/v1/agent/agui";
 const BACKEND_URL =
   process.env.BACKEND_URL ?? "http://localhost:8001";
+// Prod sets AGENT_URL explicitly (compose network); the default derives from
+// BACKEND_URL so local dev reaches the docker backend published on :8001.
+const AGENT_URL =
+  process.env.AGENT_URL ?? `${BACKEND_URL}/api/v1/agent/agui`;
 
 const isProd = process.env.NODE_ENV === "production";
 const PORT = parseInt(process.env.PORT ?? (isProd ? "3000" : "3001"));
@@ -118,6 +120,27 @@ class DeduplicateToolCallMiddleware extends (Middleware as any) {
     const open = new Set<string>();   // tool call IDs currently in progress
     const closed = new Set<string>(); // tool call IDs that already received END
 
+    // Render tools are display-once: after the client returns their result,
+    // the model sometimes re-issues the same call (fresh id) on the
+    // follow-up run, painting a second identical card. Track which render
+    // tools already ran in the current user turn (from the request's own
+    // message history) and suppress repeats — both their streamed events
+    // and their entries in this run's MESSAGES_SNAPSHOT.
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const inputMessages: any[] = Array.isArray(input?.messages) ? input.messages : [];
+    let lastUserIdx = -1;
+    inputMessages.forEach((m, i) => { if (m?.role === "user") lastUserIdx = i; });
+    const renderedThisTurn = new Set<string>();
+    for (const m of inputMessages.slice(lastUserIdx + 1)) {
+      const calls = m?.toolCalls ?? m?.tool_calls;
+      if (m?.role !== "assistant" || !Array.isArray(calls)) continue;
+      for (const tc of calls) {
+        const name = tc?.function?.name;
+        if (name && RENDER_TOOLS.has(name)) renderedThisTurn.add(name);
+      }
+    }
+    const suppressed = new Set<string>(); // toolCallIds of dropped repeats
+
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
     return new Observable<any>((observer) => {
       // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -130,13 +153,51 @@ class DeduplicateToolCallMiddleware extends (Middleware as any) {
 
           if (type === EventType.TOOL_CALL_START) {
             if (!id || closed.has(id) || open.has(id)) return; // duplicate
+            const name: string | undefined = event?.toolCallName;
+            if (name && RENDER_TOOLS.has(name)) {
+              if (renderedThisTurn.has(name)) {
+                suppressed.add(id);
+                return; // repeat render call — drop the whole call
+              }
+              renderedThisTurn.add(name);
+            }
             open.add(id);
           } else if (type === EventType.TOOL_CALL_ARGS || type === EventType.TOOL_CALL_END) {
+            if (id && suppressed.has(id)) return;
             if (id && closed.has(id)) return; // already completed, drop
             if (type === EventType.TOOL_CALL_END && id) {
               open.delete(id);
               closed.add(id);
             }
+          } else if (type === EventType.MESSAGES_SNAPSHOT && suppressed.size > 0) {
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            const msgs: any[] = Array.isArray(event?.messages) ? event.messages : [];
+            const cleaned = msgs
+              // eslint-disable-next-line @typescript-eslint/no-explicit-any
+              .map((m: any) => {
+                const calls = m?.toolCalls ?? m?.tool_calls;
+                if (m?.role !== "assistant" || !Array.isArray(calls)) return m;
+                // eslint-disable-next-line @typescript-eslint/no-explicit-any
+                const kept = calls.filter((tc: any) => !suppressed.has(String(tc?.id ?? "")));
+                if (kept.length === calls.length) return m;
+                const { toolCalls: _a, tool_calls: _b, ...rest } = m;
+                return kept.length > 0 ? { ...rest, toolCalls: kept } : rest;
+              })
+              // eslint-disable-next-line @typescript-eslint/no-explicit-any
+              .filter((m: any) => {
+                if (m?.role === "tool" && suppressed.has(String(m?.toolCallId ?? m?.tool_call_id ?? ""))) {
+                  return false;
+                }
+                if (m?.role === "assistant") {
+                  const calls = m?.toolCalls ?? m?.tool_calls;
+                  const hasCalls = Array.isArray(calls) && calls.length > 0;
+                  const hasText = typeof m?.content === "string" && m.content.length > 0;
+                  if (!hasCalls && !hasText) return false;
+                }
+                return true;
+              });
+            observer.next({ ...event, messages: cleaned });
+            return;
           }
 
           observer.next(event); // emit raw BaseEvent
@@ -189,24 +250,25 @@ class StripModelArtifactsMiddleware extends (Middleware as any) {
   }
 }
 
-// ── ReconcileSnapshotMiddleware ──────────────────────────────────────────────
+// ── DropRunMessagesSnapshotMiddleware ────────────────────────────────────────
-// MAF's `_build_messages_snapshot` (agent_framework_ag_ui/_agent_run.py:686)
+// MAF's run-end MESSAGES_SNAPSHOT re-mints ids for post-tool-call text (their
-// mints a fresh UUID for the post-tool-call assistant text instead of reusing
+// #3619) and, with thread persistence on, rebuilds history under STORE ids.
-// the streamed TEXT_MESSAGE_START id. The resulting MESSAGES_SNAPSHOT then
+// ag-ui's apply treats the snapshot as authoritative: client messages absent
-// contains TWO assistant entries: the streamed id (holding the toolCalls) and
+// from it are dropped, matching ids are replaced. Because streamed ids and
-// a brand-new id (holding the duplicated text). ag-ui's snapshot merge replaces
+// snapshot ids never agree for tool+text turns, every mid-session snapshot
-// by id then APPENDS unknown ids, so the browser ends up with two assistant
+// either duplicates the current answer (fresh-id append) or wipes earlier
-// bubbles for the same answer. Dropping the snapshot entirely fixes the dupe
+// ones (store-id replace with empty content) — both observed live. During a
-// but breaks render_a2ui card persistence (cards rely on the snapshot to keep
+// normal run the client already built the exact turn from streamed events,
-// the assistant-with-toolCalls message in state past the run). The right fix
+// so the snapshot adds nothing: swallow it. Hydration replays (empty
-// is to drop just the orphan text-only assistant message that has no streamed
+// input.messages) pass through untouched — there the snapshot IS the
-// counterpart. Remove once `_agent_run.py:686` reuses `flow.message_id`.
+// conversation, and the client converges to store ids on every reload.
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-class ReconcileSnapshotMiddleware extends (Middleware as any) {
+class DropRunMessagesSnapshotMiddleware extends (Middleware as any) {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   run(input: any, next: any): Observable<any> {
-    const streamedTextIds = new Set<string>();
+    const isHydration =
+      !Array.isArray(input?.messages) || input.messages.length === 0;
 
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
     return new Observable<any>((observer) => {
@@ -215,33 +277,9 @@ class ReconcileSnapshotMiddleware extends (Middleware as any) {
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
         next: (eventWithState: any) => {
           const event = eventWithState.event;
-          const type: string = event?.type ?? "";
+          if (event?.type === EventType.MESSAGES_SNAPSHOT && !isHydration) {
-
+            return; // client state from streaming is already correct
-          if (type === EventType.TEXT_MESSAGE_START && event?.messageId) {
-            streamedTextIds.add(String(event.messageId));
           }
-
-          if (type === EventType.MESSAGES_SNAPSHOT) {
-            // eslint-disable-next-line @typescript-eslint/no-explicit-any
-            const msgs: any[] = Array.isArray(event?.messages) ? event.messages : [];
-            const filtered = msgs.filter((m) => {
-              if (m?.role !== "assistant") return true;
-              const id = String(m?.id ?? "");
-              const hasText = typeof m?.content === "string" && m.content.length > 0;
-              const hasToolCalls =
-                (Array.isArray(m?.toolCalls) && m.toolCalls.length > 0) ||
-                (Array.isArray(m?.tool_calls) && m.tool_calls.length > 0);
-              if (hasText && !hasToolCalls && !streamedTextIds.has(id)) {
-                return false; // drop orphan text-only assistant duplicate
-              }
-              return true;
-            });
-            if (filtered.length !== msgs.length) {
-              observer.next({ ...event, messages: filtered });
-              return;
-            }
-          }
-
           observer.next(event);
         },
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
@@ -259,7 +297,7 @@ class ReconcileSnapshotMiddleware extends (Middleware as any) {
 // below the card. This middleware buffers TEXT_MESSAGE_* events and discards
 // them if any render tool call is detected in the same turn.
 
-const RENDER_TOOLS = new Set(["render_a2ui", "render_spending_summary"]);
+const RENDER_TOOLS = new Set(["render_spending_summary"]);
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 class SuppressRenderToolTextMiddleware extends (Middleware as any) {
@@ -345,61 +383,194 @@ app.use("*", async (c, next) => {
   });
 });
 
-app.all("/api/copilotkit/*", async (c) => {
+// ── CopilotKit v2 runtime (module scope, built once) ─────────────────────────
-  const cookieHeader = c.req.header("cookie") ?? "";
+// Migrated 2026-07-04 off the deprecated copilotRuntimeNextJSAppRouterEndpoint
-  const match = cookieHeader.match(/(?:^|;\s*)ws_token=([^;]+)/);
+// wrapper (which was already the v2 single-route handler underneath) onto
-  const token = match?.[1];
+// createCopilotRuntimeHandler directly, with a Postgres-backed AgentRunner:
-  const agentHeaders: Record<string, string> = token
+// run() is a pure proxy to the MAF backend (which persists every turn in
-    ? { Authorization: `Bearer ${token}` }
+// chatthreadsnapshot), and connect() forwards to MAF's snapshot hydration —
-    : {};
+// so the ONLY conversation store is the DB. This deletes the in-memory
+// runner (whose process-local replay resurrected cleared conversations) and
+// the client-side hydration hack that compensated for it.
 
-  const agent = new HttpAgent({ url: AGENT_URL, headers: agentHeaders });
+// The v2 handler nags about anonymous telemetry unless disabled.
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+process.env.COPILOTKIT_TELEMETRY_DISABLED ??= "true";
+
+function makeWealthysmartAgent(headers: Record<string, string> = {}): HttpAgent {
+  const agent = new HttpAgent({ url: AGENT_URL, headers });
+  // CK_MIDDLEWARES=off runs the stack bare — used to audit which of these
+  // workarounds are still needed after CopilotKit/MAF upgrades.
+  /* eslint-disable @typescript-eslint/no-explicit-any */
+  if (process.env.CK_MIDDLEWARES !== "off") {
     agent.use(new SuppressRenderToolTextMiddleware() as any);
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
     agent.use(new StripModelArtifactsMiddleware() as any);
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    agent.use(new DropRunMessagesSnapshotMiddleware() as any);
-  agent.use(new ReconcileSnapshotMiddleware() as any);
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
     agent.use(new DeduplicateToolCallMiddleware() as any);
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  }
+  if (process.env.CK_DEBUG_EVENTS === "1" || process.env.CK_MIDDLEWARES === "off") {
     agent.use(new DebugLogMiddleware() as any);
+  }
+  /* eslint-enable @typescript-eslint/no-explicit-any */
+  return agent;
+}
 
-  const runtime = new CopilotRuntime({
+// ── PostgresAgentRunner ───────────────────────────────────────────────────────
-    agents: { wealthysmart: agent },
+// The conversation store is Postgres (chatthreadsnapshot), written by MAF at
-    a2ui: { injectA2UITool: true },
+// every run end. So the runner records NOTHING:
+// - run() proxies the agent's event stream (the per-request clone the v2
+//   handler prepared, auth headers already forwarded onto it).
+// - connect() asks MAF for its snapshot hydration — an empty-messages run
+//   returns RUN_STARTED → [STATE_SNAPSHOT] → MESSAGES_SNAPSHOT → RUN_FINISHED
+//   with no LLM call (unknown thread: RUN_STARTED → RUN_FINISHED). The same
+//   stream shape the in-memory runner's replay approximated, but sourced
+//   from the DB, so it is correct across clears, restarts and instances.
+// - Live runs are tracked in-process only for stop(); the official
+//   sqlite-runner does the same (single-instance limitation acknowledged).
+// isRunning() has no caller in the v2 SSE path (verified at 1.62.2).
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+const liveRuns = new Map<string, any>();
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+function proxyAgentRun(agent: any, input: any, threadId: string): Observable<any> {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const subject = new ReplaySubject<any>(Infinity);
+  liveRuns.set(threadId, agent);
+  agent
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    .runAgent(input, { onEvent: ({ event }: any) => subject.next(event) })
+    .then(() => subject.complete())
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    .catch((err: any) => subject.error(err))
+    .finally(() => {
+      if (liveRuns.get(threadId) === agent) liveRuns.delete(threadId);
+    });
+  return subject.asObservable();
+}
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+class PostgresAgentRunner extends (AgentRunner as any) {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  run(request: any): Observable<any> {
+    return proxyAgentRun(request.agent, request.input, request.threadId);
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  connect(request: any): Observable<any> {
+    // request.headers = authorization + x-* from the incoming browser
+    // request (extractForwardableHeaders) — exactly what MAF needs.
+    const agent = makeWealthysmartAgent(request.headers ?? {});
+    agent.threadId = request.threadId;
+    // No messages + known threadId = MAF's hydration trigger.
+    return proxyAgentRun(agent, {}, `connect:${request.threadId}`);
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  isRunning(request: any): Promise<boolean> {
+    return Promise.resolve(liveRuns.has(request.threadId));
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  async stop(request: any): Promise<boolean | undefined> {
+    const agent = liveRuns.get(request.threadId);
+    if (!agent) return false;
+    try {
+      agent.abortRun();
+      liveRuns.delete(request.threadId);
+      return true;
+    } catch {
+      return false;
+    }
+  }
+}
+
+const runtime = new CopilotRuntime({
+  agents: { wealthysmart: makeWealthysmartAgent() },
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  runner: new PostgresAgentRunner() as any,
+  // a2ui disabled 2026-07-04: CK 1.60+ validates generated ops against a
+  // catalog and our agent's ops fail validation (surface never paints).
+  // Markdown tables cover the use case until the pipeline matures.
+  a2ui: { enabled: false },
   beforeRequestMiddleware: async ({ request: outbound }) => {
     if (outbound.method !== "POST") return;
     const ct = outbound.headers.get("content-type") ?? "";
     if (!ct.includes("application/json")) return;
     try {
-        const body = (await outbound.clone().json()) as { messages?: AGUIMessage[] };
+      const body = (await outbound.clone().json()) as {
+        messages?: AGUIMessage[];
+        context?: { description?: string; value?: string }[];
+      };
       if (!Array.isArray(body.messages)) return;
-        const paired = pairOrphanToolCalls(body.messages);
+      // An empty messages array is MAF's hydration trigger (known threadId
-        if (paired.length === body.messages.length) return;
+      // + no messages → replay the stored snapshot without invoking the
+      // LLM). Injecting anything would turn it into a normal run.
+      if (body.messages.length === 0) return;
+      let messages = pairOrphanToolCalls(body.messages);
+
+      // MAF's AG-UI endpoint declares `context` on its request model but
+      // never feeds it to the model (agent_framework_ag_ui, checked at
+      // python-1.10.0). CopilotKit 1.60+ ships the A2UI catalog schema and
+      // guidelines in that context — without them the model emits ops the
+      // A2UI validator rejects and the surface never paints. Inject the
+      // context as a system message ourselves. Remove once MAF consumes
+      // RunAgentInput.context.
+      if (Array.isArray(body.context) && body.context.length > 0) {
+        const contextText = body.context
+          .map((c) => `## ${c.description ?? "Context"}\n${c.value ?? ""}`)
+          .join("\n\n");
+        messages = [
+          {
+            id: `ctx-${Date.now()}`,
+            role: "system",
+            content: `Additional run context:\n\n${contextText}`,
+          } as AGUIMessage,
+          ...messages,
+        ];
+      }
+
+      if (messages === body.messages) return;
       return new Request(outbound.url, {
         method: outbound.method,
         headers: outbound.headers,
-          body: JSON.stringify({ ...body, messages: paired }),
+        body: JSON.stringify({ ...body, messages }),
       });
     } catch (err) {
       // Skipping the repair is survivable; doing it silently is not —
       // orphan tool calls then fail downstream with no trace of why.
-        console.error("[copilotkit] orphan-tool-call repair skipped:", err);
+      console.error("[copilotkit] outbound request repair skipped:", err);
       return;
     }
   },
-  });
-
-  const { handleRequest } = copilotRuntimeNextJSAppRouterEndpoint({
-    runtime,
-    serviceAdapter: new ExperimentalEmptyAdapter(),
-    endpoint: "/api/copilotkit",
-  });
-
-  return handleRequest(c.req.raw as Parameters<typeof handleRequest>[0]);
 });
 
+const ckHandler = createCopilotRuntimeHandler({
+  runtime,
+  basePath: "/api/copilotkit",
+  // Single-route mode: same envelope protocol the client already resolved
+  // via auto-detect (its GET /info probe 405s here, so it stays "single").
+  // Multi-route would only add /threads* REST endpoints we don't use and is
+  // exposed to CopilotKit#4953 (frontend tools under multi-route).
+  mode: "single-route",
+  cors: false,
+});
+
+// The v2 handler forwards only `authorization` and `x-*` headers to agents
+// and to runner.connect — cookies never pass. Translate the auth cookie into
+// a Bearer header before the handler sees the request.
+function withBearerFromCookie(req: Request): Request {
+  if (req.headers.get("authorization")) return req;
+  const cookie = req.headers.get("cookie") ?? "";
+  const match = cookie.match(/(?:^|;\s*)ws_token=([^;]+)/);
+  if (!match) return req;
+  const headers = new Headers(req.headers);
+  headers.set("Authorization", `Bearer ${match[1]}`);
+  return new Request(req, { headers });
+}
+
+app.all("/api/copilotkit/*", (c) => ckHandler(withBearerFromCookie(c.req.raw)));
+app.all("/api/copilotkit", (c) => ckHandler(withBearerFromCookie(c.req.raw)));
+
 app.get("/api/health", (c) => c.json({ ok: true }));
 
 // Proxy backend API calls (FastAPI). In dev these hit Vite's proxy directly,

frontend/src/App.tsx

@@ -16,10 +16,12 @@ const queryClient = new QueryClient({
 });
 import Layout from "./components/Layout";
 import LoginPage from "./pages/Login";
+import Inicio from "./pages/Inicio";
 import Asistente from "./pages/Asistente";
 import Analytics from "./pages/Analytics";
 import Budget from "./pages/Budget";
 import Salarios from "./pages/Salarios";
+import Financiamientos from "./pages/Financiamientos";
 import Pensions from "./pages/Pensions";
 import Proyecciones from "./pages/Proyecciones";
 import ServiciosMunicipales from "./pages/ServiciosMunicipales";
@@ -41,7 +43,7 @@ function AppRoutes() {
     <Routes>
       <Route
         path="/login"
-        element={isAuthenticated ? <Navigate to="/asistente" replace /> : <LoginPage />}
+        element={isAuthenticated ? <Navigate to="/" replace /> : <LoginPage />}
       />
       <Route
         element={
@@ -50,12 +52,13 @@ function AppRoutes() {
           </ProtectedRoute>
         }
       >
-        <Route index element={<Navigate to="/asistente" replace />} />
+        <Route index element={<Inicio />} />
         <Route path="/asistente" element={<Asistente />} />
         <Route path="/budget" element={<Budget />} />
         <Route path="/analytics" element={<Analytics />} />
         <Route path="/proyecciones" element={<Proyecciones />} />
         <Route path="/salarios" element={<Salarios />} />
+        <Route path="/financiamientos" element={<Financiamientos />} />
         <Route path="/pensions" element={<Pensions />} />
         <Route path="/servicios-municipales" element={<ServiciosMunicipales />} />
         <Route path="/sync" element={<SyncStatus />} />
@@ -74,7 +77,17 @@ export default function App() {
         <PrivacyProvider>
           <AuthProvider>
             <QueryClientProvider client={queryClient}>
-              <CopilotKit runtimeUrl="/api/copilotkit" agent="wealthysmart" a2ui={{}}>
+              <CopilotKit
+                runtimeUrl="/api/copilotkit"
+                agent="wealthysmart"
+                headers={{
+                  // Lets the agent resolve "hoy"/"este mes" in the user's
+                  // local time wherever they are; backend falls back to
+                  // Costa Rica when absent.
+                  "X-Client-Timezone":
+                    Intl.DateTimeFormat().resolvedOptions().timeZone,
+                }}
+              >
                 <AppRoutes />
                 <Toaster richColors position="top-right" closeButton />
               </CopilotKit>

frontend/src/components/Layout.tsx

@@ -1,237 +1,105 @@
-import { useState, useEffect } from "react";
+import { Link, Outlet, useLocation } from "react-router-dom";
-import { Link, Outlet, useLocation, useNavigate } from "react-router-dom";
+import { Eye, EyeOff, Moon, Sun } from "lucide-react";
-import {
-  Sparkles,
-  Telescope,
-  Calculator,
-  BarChart3,
-  Landmark,
-  PiggyBank,
-  Droplets,
-  LogOut,
-  TrendingUp,
-  Wallet,
-  Menu,
-  RefreshCw,
-  Sun,
-  Moon,
-  Eye,
-  EyeOff,
-  type LucideIcon,
-} from "lucide-react";
-import { useQuery } from "@tanstack/react-query";
 
-import { getSyncStatus } from "@/lib/api";
+import { titleFor } from "@/lib/navigation";
 import { useTheme } from "@/contexts/theme-context";
 import { usePrivacy } from "@/contexts/privacy-context";
-import { useAuth } from "@/AuthContext";
+import { AppSidebar } from "@/components/app-sidebar";
+import { CommandMenu } from "@/components/command-menu";
 import { Button } from "@/components/ui/button";
 import {
-  Sheet,
+  Breadcrumb,
-  SheetContent,
+  BreadcrumbItem,
-  SheetHeader,
+  BreadcrumbLink,
-  SheetTitle,
+  BreadcrumbList,
-  SheetClose,
+  BreadcrumbPage,
-} from "@/components/ui/sheet";
+  BreadcrumbSeparator,
+} from "@/components/ui/breadcrumb";
 import { Separator } from "@/components/ui/separator";
-import { cn } from "@/lib/utils";
+import {
-
+  SidebarInset,
-interface NavSection {
+  SidebarProvider,
-  label: string;
+  SidebarTrigger,
-  items: { to: string; icon: LucideIcon; label: string }[];
+} from "@/components/ui/sidebar";
-}
-
-const navSections: NavSection[] = [
-  {
-    label: "General",
-    items: [
-      { to: "/asistente", icon: Sparkles, label: "Asistente" },
-      { to: "/sync", icon: RefreshCw, label: "Sincronización" },
-    ],
-  },
-  {
-    label: "Finanzas",
-    items: [
-      { to: "/budget", icon: Calculator, label: "Presupuesto" },
-      { to: "/salarios", icon: Landmark, label: "Salarios" },
-      { to: "/pensions", icon: PiggyBank, label: "Pensiones" },
-      { to: "/proyecciones", icon: TrendingUp, label: "Proyecciones" },
-      { to: "/planificador", icon: Telescope, label: "Planificador" },
-      { to: "/analytics", icon: BarChart3, label: "Analytics" },
-    ],
-  },
-  {
-    label: "Servicios",
-    items: [
-      { to: "/servicios-municipales", icon: Droplets, label: "Municipalidad" },
-    ],
-  },
-];
-
-function SidebarNav({ onNavigate }: { onNavigate?: () => void }) {
-  const { pathname } = useLocation();
-  const isActive = (to: string) =>
-    pathname === to || pathname.startsWith(`${to}/`);
-
-  // Surface stalled ingestion sources as a dot on the Sincronización item.
-  const syncQ = useQuery({
-    queryKey: ['sync-status'],
-    queryFn: () => getSyncStatus().then((r) => r.data),
-    staleTime: 5 * 60_000,
-  });
-  const syncWarnings = syncQ.data?.warnings ?? 0;
-
-  return (
-    <nav className="flex flex-col gap-0.5 px-3">
-      {navSections.map((section) => (
-        <div key={section.label}>
-          <p className="text-xs font-medium text-muted-foreground uppercase tracking-wider px-3 pt-4 pb-1">
-            {section.label}
-          </p>
-          {section.items.map(({ to, icon: Icon, label }) => (
-            <Link
-              key={to}
-              to={to}
-              onClick={onNavigate}
-              className={cn(
-                "flex items-center gap-3 px-3 py-2 rounded-lg text-sm font-medium transition-colors",
-                isActive(to)
-                  ? "bg-primary/10 text-primary"
-                  : "text-muted-foreground hover:text-foreground hover:bg-muted",
-              )}
-            >
-              <Icon className="w-4 h-4" />
-              {label}
-              {to === "/sync" && syncWarnings > 0 && (
-                <span
-                  className="ml-auto w-2 h-2 rounded-full bg-amber-500"
-                  title={`${syncWarnings} fuente(s) atrasada(s)`}
-                  aria-label={`${syncWarnings} fuentes de datos atrasadas`}
-                />
-              )}
-            </Link>
-          ))}
-        </div>
-      ))}
-    </nav>
-  );
-}
 
 export default function Layout() {
   const { theme, toggleTheme } = useTheme();
   const { privacyMode, togglePrivacy } = usePrivacy();
-  const { logout } = useAuth();
+  const { pathname } = useLocation();
-  const navigate = useNavigate();
+  const title = titleFor(pathname);
-  const [mobileOpen, setMobileOpen] = useState(false);
+  // Asistente hosts its own scroll container (the chat), so its route caps
-
+  // the shell at the viewport; every other page keeps normal body scroll.
-  const handleLogout = async () => {
+  const fullHeight = pathname === "/asistente";
-    await logout();
-    navigate("/login", { replace: true });
-  };
 
   return (
-    <div className="min-h-screen bg-background text-foreground">
+    <SidebarProvider>
-      <header className="border-b border-border backdrop-blur-sm sticky top-0 z-50 bg-background/90">
+      <AppSidebar />
-        <div className="px-4 sm:px-6 py-3 flex items-center justify-between">
+      <SidebarInset className={fullHeight ? "h-svh overflow-hidden" : undefined}>
-          <div className="flex items-center gap-2.5">
+        <header className="sticky top-0 z-40 flex h-14 shrink-0 items-center gap-2 border-b border-border bg-background/90 px-4 backdrop-blur-sm">
+          <SidebarTrigger className="-ml-1" />
+          <Separator
+            orientation="vertical"
+            className="mr-2 data-[orientation=vertical]:h-4"
+          />
+          <Breadcrumb>
+            <BreadcrumbList>
+              <BreadcrumbItem>
+                {pathname === "/" ? (
+                  <BreadcrumbPage>Inicio</BreadcrumbPage>
+                ) : (
+                  <BreadcrumbLink render={<Link to="/" />}>
+                    Inicio
+                  </BreadcrumbLink>
+                )}
+              </BreadcrumbItem>
+              {pathname !== "/" && (
+                <>
+                  <BreadcrumbSeparator />
+                  <BreadcrumbItem>
+                    <BreadcrumbPage>{title}</BreadcrumbPage>
+                  </BreadcrumbItem>
+                </>
+              )}
+            </BreadcrumbList>
+          </Breadcrumb>
+          <div className="ml-auto flex items-center gap-1">
+            <CommandMenu />
             <Button
               variant="ghost"
               size="icon"
-              onClick={() => setMobileOpen(true)}
+              onClick={togglePrivacy}
-              title="Open menu"
+              title="Toggle privacy mode"
-              aria-label="Open menu"
+              aria-label="Toggle privacy mode"
-              className="md:hidden"
+              aria-pressed={privacyMode}
             >
-              <Menu className="w-5 h-5" />
+              {privacyMode ? (
-            </Button>
+                <EyeOff className="w-4 h-4" />
-            <div className="w-8 h-8 rounded-lg bg-primary flex items-center justify-center">
+              ) : (
-              <Wallet className="w-4 h-4 text-primary-foreground" strokeWidth={2.5} />
+                <Eye className="w-4 h-4" />
-            </div>
+              )}
-            <span className="text-lg font-bold tracking-tight hidden sm:inline" style={{ fontFamily: "var(--font-heading)" }}>
-              Wealthy<span className="text-primary">Smart</span>
-            </span>
-          </div>
-
-          <div className="flex items-center gap-1">
-            <Button variant="ghost" size="icon" onClick={togglePrivacy} title="Toggle privacy mode" aria-label="Toggle privacy mode" aria-pressed={privacyMode}>
-              {privacyMode ? <EyeOff className="w-4 h-4" /> : <Eye className="w-4 h-4" />}
-            </Button>
-            <Button variant="ghost" size="icon" onClick={toggleTheme} title="Toggle theme" aria-label="Toggle theme" aria-pressed={theme === "dark"}>
-              {theme === "dark" ? <Sun className="w-4 h-4" /> : <Moon className="w-4 h-4" />}
             </Button>
             <Button
               variant="ghost"
               size="icon"
-              onClick={handleLogout}
+              onClick={toggleTheme}
-              title="Sign out"
+              title="Toggle theme"
-              aria-label="Sign out"
+              aria-label="Toggle theme"
-              className="hidden md:inline-flex"
+              aria-pressed={theme === "dark"}
             >
-              <LogOut className="w-4 h-4" />
+              {theme === "dark" ? (
+                <Sun className="w-4 h-4" />
+              ) : (
+                <Moon className="w-4 h-4" />
+              )}
             </Button>
           </div>
-        </div>
         </header>
-
+        <main className="flex min-h-0 flex-1 flex-col px-4 py-6 sm:px-6 lg:px-8">
-      <div className="flex">
+          <div className="mx-auto flex min-h-0 w-full max-w-6xl flex-1 flex-col">
-        <aside className="hidden md:flex md:flex-col md:w-56 md:flex-shrink-0 border-r border-border sticky top-[57px] h-[calc(100vh-57px)] overflow-y-auto bg-background">
-          <div className="flex-1">
-            <SidebarNav />
-          </div>
-          <div className="px-3 pb-4">
-            <Separator className="mb-2" />
-            <button
-              onClick={handleLogout}
-              className="flex items-center gap-3 px-3 py-2 rounded-lg text-sm font-medium text-muted-foreground hover:text-foreground hover:bg-muted w-full cursor-pointer focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
-            >
-              <LogOut className="w-4 h-4" />
-              Cerrar sesión
-            </button>
-          </div>
-        </aside>
-
-        <Sheet open={mobileOpen} onOpenChange={setMobileOpen}>
-          <SheetContent side="left" className="p-0 w-64">
-            <SheetHeader className="p-4">
-              <SheetTitle className="flex items-center gap-2.5">
-                <div className="w-8 h-8 rounded-lg bg-primary flex items-center justify-center">
-                  <Wallet className="w-4 h-4 text-primary-foreground" strokeWidth={2.5} />
-                </div>
-                <span style={{ fontFamily: "var(--font-heading)" }}>
-                  Wealthy<span className="text-primary">Smart</span>
-                </span>
-              </SheetTitle>
-            </SheetHeader>
-            <Separator />
-            <div className="flex flex-col h-[calc(100%-65px)]">
-              <div className="flex-1 overflow-y-auto">
-                <SidebarNav onNavigate={() => setMobileOpen(false)} />
-              </div>
-              <div className="px-3 pb-4">
-                <Separator className="mb-2" />
-                <SheetClose render={<span />}>
-                  <button
-                    onClick={() => {
-                      setMobileOpen(false);
-                      void handleLogout();
-                    }}
-                    className="flex items-center gap-3 px-3 py-2 rounded-lg text-sm font-medium text-muted-foreground hover:text-foreground hover:bg-muted w-full cursor-pointer"
-                  >
-                    <LogOut className="w-4 h-4" />
-                    Cerrar sesión
-                  </button>
-                </SheetClose>
-              </div>
-            </div>
-          </SheetContent>
-        </Sheet>
-
-        <main className="flex-1 min-w-0 px-4 sm:px-6 lg:px-8 py-6">
-          <div className="max-w-6xl mx-auto">
             <Outlet />
           </div>
         </main>
-      </div>
+      </SidebarInset>
-    </div>
+    </SidebarProvider>
   );
 }

frontend/src/components/SalaryEntryDialog.tsx

@@ -0,0 +1,177 @@
+import { useState } from 'react';
+import { toast } from 'sonner';
+
+import api from '@/lib/api';
+import { formatLocalDatetime } from '@/lib/format';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
+import { Alert, AlertDescription } from '@/components/ui/alert';
+import { AlertCircle } from 'lucide-react';
+
+interface Props {
+  onClose: () => void;
+  onSaved: () => void;
+}
+
+export default function SalaryEntryDialog({ onClose, onSaved }: Props) {
+  const [form, setForm] = useState({
+    amount: '',
+    currency: 'CRC',
+    date: formatLocalDatetime(new Date()),
+    bank: 'BAC',
+    reference: '',
+    notes: '',
+  });
+  const [saving, setSaving] = useState(false);
+  const [error, setError] = useState('');
+
+  const handleSubmit = async (event: React.FormEvent) => {
+    event.preventDefault();
+    const amount = Number(form.amount);
+    if (!Number.isFinite(amount) || amount <= 0) {
+      setError('Ingresá un monto mayor que cero.');
+      return;
+    }
+
+    setSaving(true);
+    setError('');
+    try {
+      await api.post('/transactions/', {
+        amount,
+        currency: form.currency,
+        date: form.date,
+        bank: form.bank,
+        merchant: 'Salario',
+        transaction_type: 'SALARY',
+        source: 'TRANSFER',
+        reference: form.reference.trim() || null,
+        notes: form.notes.trim() || null,
+      });
+      toast.success('Salario registrado');
+      onSaved();
+      onClose();
+    } catch (err) {
+      const status = err && typeof err === 'object' && 'response' in err
+        ? (err as { response: { status: number } }).response.status
+        : null;
+      setError(
+        status === 409
+          ? 'Ya existe una transacción con ese comprobante.'
+          : 'No se pudo registrar el salario. Intentá de nuevo.',
+      );
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  return (
+    <Dialog open onOpenChange={(open) => { if (!open) onClose(); }}>
+      <DialogContent className="sm:max-w-md">
+        <DialogHeader>
+          <DialogTitle>Registrar salario</DialogTitle>
+          <DialogDescription>
+            Guardá el depósito recibido mientras configurás una nueva automatización.
+          </DialogDescription>
+        </DialogHeader>
+
+        <form onSubmit={handleSubmit} className="space-y-5">
+          {error && (
+            <Alert variant="destructive">
+              <AlertCircle className="h-4 w-4" />
+              <AlertDescription>{error}</AlertDescription>
+            </Alert>
+          )}
+
+          <div className="grid grid-cols-2 gap-4">
+            <div className="space-y-2">
+              <Label htmlFor="salary-amount">Monto</Label>
+              <Input
+                id="salary-amount"
+                type="number"
+                min="0.01"
+                step="0.01"
+                inputMode="decimal"
+                value={form.amount}
+                onChange={(e) => setForm({ ...form, amount: e.target.value })}
+                placeholder="0.00"
+                autoFocus
+                required
+              />
+            </div>
+            <div className="space-y-2">
+              <Label>Moneda</Label>
+              <Select value={form.currency} onValueChange={(value) => value && setForm({ ...form, currency: value })}>
+                <SelectTrigger><SelectValue /></SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="CRC">CRC (₡)</SelectItem>
+                  <SelectItem value="USD">USD ($)</SelectItem>
+                  <SelectItem value="EUR">EUR (€)</SelectItem>
+                </SelectContent>
+              </Select>
+            </div>
+            <div className="col-span-2 space-y-2">
+              <Label htmlFor="salary-date">Fecha del depósito</Label>
+              <Input
+                id="salary-date"
+                type="datetime-local"
+                value={form.date}
+                onChange={(e) => setForm({ ...form, date: e.target.value })}
+                required
+              />
+            </div>
+            <div className="space-y-2">
+              <Label>Banco</Label>
+              <Select value={form.bank} onValueChange={(value) => value && setForm({ ...form, bank: value })}>
+                <SelectTrigger><SelectValue /></SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="BAC">BAC</SelectItem>
+                  <SelectItem value="BCR">BCR</SelectItem>
+                  <SelectItem value="DAVIVIENDA">Davivienda</SelectItem>
+                </SelectContent>
+              </Select>
+            </div>
+            <div className="space-y-2">
+              <Label htmlFor="salary-reference">Comprobante</Label>
+              <Input
+                id="salary-reference"
+                value={form.reference}
+                onChange={(e) => setForm({ ...form, reference: e.target.value })}
+                placeholder="Opcional"
+              />
+            </div>
+            <div className="col-span-2 space-y-2">
+              <Label htmlFor="salary-notes">Nota</Label>
+              <Input
+                id="salary-notes"
+                value={form.notes}
+                onChange={(e) => setForm({ ...form, notes: e.target.value })}
+                placeholder="Ej. Quincena de julio"
+              />
+            </div>
+          </div>
+
+          <DialogFooter>
+            <Button type="button" variant="outline" onClick={onClose}>Cancelar</Button>
+            <Button type="submit" disabled={saving}>{saving ? 'Guardando…' : 'Registrar salario'}</Button>
+          </DialogFooter>
+        </form>
+      </DialogContent>
+    </Dialog>
+  );
+}

frontend/src/components/TransactionList.tsx

@@ -9,6 +9,7 @@ import {
   ArrowLeftRight,
   ArrowRightFromLine,
   Banknote,
+  Layers,
 } from 'lucide-react';
 
 import { toast } from 'sonner';
@@ -46,6 +47,12 @@ export interface TransactionListProps {
   showSourceIcon?: boolean;
   addLabel?: string;
   onToggleDeferred?: (tx: Transaction) => void;
+  onConvertTasaCero?: (tx: Transaction) => void;
+  /** Extra toolbar content, e.g. source tabs (left) and the CSV button (right). */
+  toolbarLeft?: React.ReactNode;
+  toolbarRight?: React.ReactNode;
+  /** Period hint shown in the summary strip, e.g. "Ciclo 18 jun – 18 jul". */
+  summaryLabel?: string;
 }
 
 export default function TransactionList({
@@ -59,8 +66,12 @@ export default function TransactionList({
   emptyMessage = 'No transactions found',
   showCategory = true,
   showSourceIcon = false,
-  addLabel = 'Add Transaction',
+  addLabel = 'Agregar transacción',
   onToggleDeferred,
+  onConvertTasaCero,
+  toolbarLeft,
+  toolbarRight,
+  summaryLabel,
 }: TransactionListProps) {
   const [modalOpen, setModalOpen] = useState(false);
   const [editing, setEditing] = useState<Transaction | null>(null);
@@ -165,6 +176,7 @@ export default function TransactionList({
         onEdit: handleEdit,
         onDelete: (id) => setDeleteId(id),
         onToggleDeferred,
+        onConvertTasaCero,
         selection: {
           selected,
           allSelected,
@@ -182,7 +194,7 @@ export default function TransactionList({
         },
       }),
     // eslint-disable-next-line react-hooks/exhaustive-deps
-    [showCategory, showSourceIcon, onToggleDeferred, selected, allSelected, transactions],
+    [showCategory, showSourceIcon, onToggleDeferred, onConvertTasaCero, selected, allSelected, transactions],
   );
 
   const visibleTransactions = pendingDeletes.size
@@ -190,28 +202,76 @@ export default function TransactionList({
     : transactions;
   const empty = visibleTransactions.length === 0 && !loading;
 
+  // Net spend of the listed transactions per currency: COMPRA − DEVOLUCION,
+  // excluding Tasa Cero anchors (their cuotas are what count in the budget).
+  const totalsByCurrency = useMemo(() => {
+    const totals = new Map<string, number>();
+    for (const tx of visibleTransactions) {
+      if (tx.is_installment_anchor) continue;
+      if (tx.transaction_type !== 'COMPRA' && tx.transaction_type !== 'DEVOLUCION') continue;
+      const sign = tx.transaction_type === 'DEVOLUCION' ? -1 : 1;
+      totals.set(tx.currency, (totals.get(tx.currency) ?? 0) + sign * tx.amount);
+    }
+    // CRC first, then the rest alphabetically
+    return [...totals.entries()].sort(([a], [b]) =>
+      a === 'CRC' ? -1 : b === 'CRC' ? 1 : a.localeCompare(b),
+    );
+  }, [visibleTransactions]);
+
   return (
     <>
-      {/* Search + Add */}
+      <Card className="overflow-hidden">
-      <div className="flex items-center gap-3">
+      <CardContent className="p-0">
-        <div className="relative flex-1 max-w-sm">
+
+      {/* Toolbar: source tabs · search · CSV · add */}
+      <div className="flex flex-wrap items-center gap-2 p-3 border-b border-border">
+        {toolbarLeft}
+        <div className="relative flex-1 min-w-44 max-w-sm">
           <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
           <Input
             value={search}
             onChange={(e) => onSearchChange(e.target.value)}
             className="pl-10"
-            placeholder="Search merchants..."
+            placeholder="Buscar comercio…"
           />
         </div>
+        <div className="ml-auto flex items-center gap-2">
+          {toolbarRight}
           <Button onClick={() => { setEditing(null); setModalOpen(true); }}>
             <Plus className="w-4 h-4" />
             {addLabel}
           </Button>
         </div>
+      </div>
+
+      {/* Summary strip: period · count · total */}
+      {visibleTransactions.length > 0 && (
+        <div className="flex flex-wrap items-center justify-between gap-x-4 gap-y-1 px-4 py-2 border-b border-border bg-muted/30 text-sm">
+          <span className="text-muted-foreground">
+            {summaryLabel ? `${summaryLabel} · ` : ''}
+            {visibleTransactions.length} transaccion{visibleTransactions.length === 1 ? '' : 'es'}
+          </span>
+          {totalsByCurrency.length > 0 && (
+            <span
+              className="flex items-center gap-1.5 text-muted-foreground"
+              title="Compras menos devoluciones de las transacciones listadas. Excluye compras convertidas a Tasa Cero (cuentan sus cuotas)."
+            >
+              Total:
+              {totalsByCurrency.map(([currency, net], i) => (
+                <span key={currency} data-sensitive className="font-mono font-semibold text-foreground">
+                  {i > 0 && <span className="text-muted-foreground font-normal mr-1.5">+</span>}
+                  {net < 0 ? '+' : ''}
+                  {formatAmount(net, currency)}
+                </span>
+              ))}
+            </span>
+          )}
+        </div>
+      )}
 
       {/* Bulk action bar */}
       {selected.size > 0 && (
-        <div className="hidden md:flex items-center gap-2 rounded-lg border bg-muted/40 px-3 py-2">
+        <div className="hidden md:flex items-center gap-2 border-b border-border bg-muted/40 px-3 py-2">
           <span className="text-sm font-medium">
             {selected.size} seleccionada{selected.size === 1 ? '' : 's'}
           </span>
@@ -288,8 +348,7 @@ export default function TransactionList({
       )}
 
       {/* Mobile list */}
-      <Card className="md:hidden">
+      <div className="md:hidden divide-y divide-border">
-        <CardContent className="p-0 divide-y divide-border">
           {empty ? (
             <div className="px-5 py-16 text-center text-muted-foreground text-sm">
               {emptyIcon || <ArrowLeftRight className="w-8 h-8 mx-auto mb-3 text-muted-foreground/50" />}
@@ -331,6 +390,11 @@ export default function TransactionList({
                           ? <ArrowLeftRight className="w-3.5 h-3.5 text-muted-foreground shrink-0" />
                           : null
                     )}
+                    {tx.is_installment_anchor && (
+                      <span className="text-[10px] text-violet-600 border border-violet-300 rounded px-1 shrink-0">
+                        Tasa Cero
+                      </span>
+                    )}
                   </div>
                   <p className="text-xs text-muted-foreground">
                     {new Date(tx.date).toLocaleDateString('es-CR', { month: 'short', day: 'numeric' })}
@@ -343,14 +407,30 @@ export default function TransactionList({
                   data-sensitive
                   className={cn(
                     'font-mono text-sm font-medium shrink-0',
-                    tx.transaction_type === 'DEVOLUCION' && 'text-primary'
+                    tx.transaction_type === 'DEVOLUCION' && 'text-primary',
+                    (tx.deferred_to_next_cycle || tx.is_installment_anchor) &&
+                      'opacity-50 line-through decoration-muted-foreground/60',
                   )}
                 >
                   {tx.transaction_type === 'DEVOLUCION' ? '+' : '-'}
                   {formatAmount(tx.amount, tx.currency)}
                 </span>
                 <div className="flex items-center gap-0.5 shrink-0">
-                  {onToggleDeferred && (
+                  {onConvertTasaCero &&
+                    tx.transaction_type === 'COMPRA' &&
+                    tx.installment_plan_id == null && (
+                      <Button
+                        variant="ghost"
+                        size="icon"
+                        title={tx.is_installment_anchor ? 'Editar plan Tasa Cero' : 'Convertir a Tasa Cero'}
+                        aria-label={tx.is_installment_anchor ? 'Edit Tasa Cero plan' : 'Convert to Tasa Cero'}
+                        onClick={() => onConvertTasaCero(tx)}
+                        className={cn(tx.is_installment_anchor && 'text-violet-600')}
+                      >
+                        <Layers className="w-4 h-4" />
+                      </Button>
+                    )}
+                  {onToggleDeferred && tx.installment_plan_id == null && (
                     <Button
                       variant="ghost"
                       size="icon"
@@ -362,13 +442,13 @@ export default function TransactionList({
                       <ArrowRightFromLine className="w-4 h-4" />
                     </Button>
                   )}
-                  <Button variant="ghost" size="icon" title="Edit transaction" aria-label="Edit transaction" onClick={() => handleEdit(tx)}>
+                  <Button variant="ghost" size="icon" title="Editar transacción" aria-label="Edit transaction" onClick={() => handleEdit(tx)}>
                     <Pencil className="w-4 h-4" />
                   </Button>
                   <Button
                     variant="ghost"
                     size="icon"
-                    title="Delete transaction"
+                    title="Eliminar transacción"
                     aria-label="Delete transaction"
                     onClick={() => setDeleteId(tx.id)}
                     className="hover:text-destructive"
@@ -379,12 +459,10 @@ export default function TransactionList({
               </div>
             ))
           )}
-        </CardContent>
+      </div>
-      </Card>
 
       {/* Desktop table */}
-      <Card className="hidden md:block">
+      <div className="hidden md:block">
-        <CardContent className="p-0">
           <DataTable
             columns={columns}
             data={visibleTransactions}
@@ -393,6 +471,8 @@ export default function TransactionList({
             initialSorting={[{ id: 'date', desc: true }]}
             emptyMessage={emptyMessage}
           />
+      </div>
+
       </CardContent>
       </Card>
 

frontend/src/components/app-sidebar.tsx

@@ -0,0 +1,100 @@
+import { Wallet } from "lucide-react";
+import { Link, useLocation } from "react-router-dom";
+import { useQuery } from "@tanstack/react-query";
+
+import { getSyncStatus } from "@/lib/api";
+import { isNavActive, navSections } from "@/lib/navigation";
+import { NavUser } from "@/components/nav-user";
+import {
+  Sidebar,
+  SidebarContent,
+  SidebarFooter,
+  SidebarGroup,
+  SidebarGroupContent,
+  SidebarGroupLabel,
+  SidebarHeader,
+  SidebarMenu,
+  SidebarMenuBadge,
+  SidebarMenuButton,
+  SidebarMenuItem,
+  SidebarRail,
+  useSidebar,
+} from "@/components/ui/sidebar";
+
+export function AppSidebar(props: React.ComponentProps<typeof Sidebar>) {
+  const { pathname } = useLocation();
+  const { setOpenMobile } = useSidebar();
+
+  // Surface stalled ingestion sources as a dot on the Sincronización item.
+  const syncQ = useQuery({
+    queryKey: ["sync-status"],
+    queryFn: () => getSyncStatus().then((r) => r.data),
+    staleTime: 5 * 60_000,
+  });
+  const syncWarnings = syncQ.data?.warnings ?? 0;
+
+  return (
+    <Sidebar collapsible="icon" {...props}>
+      <SidebarHeader>
+        <SidebarMenu>
+          <SidebarMenuItem>
+            <SidebarMenuButton
+              size="lg"
+              render={<Link to="/" aria-label="Ir a Inicio" />}
+            >
+              <div className="bg-primary text-primary-foreground flex aspect-square size-8 items-center justify-center rounded-lg">
+                <Wallet className="size-4" strokeWidth={2.5} />
+              </div>
+              <span
+                className="text-base font-bold tracking-tight"
+                style={{ fontFamily: "var(--font-heading)" }}
+              >
+                Wealthy<span className="text-primary">Smart</span>
+              </span>
+            </SidebarMenuButton>
+          </SidebarMenuItem>
+        </SidebarMenu>
+      </SidebarHeader>
+
+      <SidebarContent>
+        {navSections.map((section) => (
+          <SidebarGroup key={section.label}>
+            <SidebarGroupLabel>{section.label}</SidebarGroupLabel>
+            <SidebarGroupContent>
+              <SidebarMenu>
+                {section.items.map(({ to, icon: Icon, label }) => (
+                  <SidebarMenuItem key={to}>
+                    <SidebarMenuButton
+                      isActive={isNavActive(to, pathname)}
+                      tooltip={label}
+                      render={
+                        <Link to={to} onClick={() => setOpenMobile(false)} />
+                      }
+                    >
+                      <Icon />
+                      <span>{label}</span>
+                    </SidebarMenuButton>
+                    {to === "/sync" && syncWarnings > 0 && (
+                      <SidebarMenuBadge>
+                        <span
+                          className="size-2 rounded-full bg-amber-500"
+                          title={`${syncWarnings} fuente(s) atrasada(s)`}
+                          aria-label={`${syncWarnings} fuentes de datos atrasadas`}
+                        />
+                      </SidebarMenuBadge>
+                    )}
+                  </SidebarMenuItem>
+                ))}
+              </SidebarMenu>
+            </SidebarGroupContent>
+          </SidebarGroup>
+        ))}
+      </SidebarContent>
+
+      <SidebarFooter>
+        <NavUser />
+      </SidebarFooter>
+      <SidebarRail />
+    </Sidebar>
+  );
+}

frontend/src/components/budget/MonthlyDetail.tsx

@@ -1,12 +1,11 @@
-import { useState } from 'react';
 import { PieChart, Pie, Cell } from 'recharts';
 
 import { type MonthlyDetail as MonthlyDetailType } from '@/lib/api';
 import { formatAmount } from '@/lib/format';
+import { categoricalColor, rampColor, MAX_SLICES } from '@/lib/charts';
 import { cn } from '@/lib/utils';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Separator } from '@/components/ui/separator';
-import { Button } from '@/components/ui/button';
 import { Skeleton } from '@/components/ui/skeleton';
 import {
   ChartContainer,
@@ -23,29 +22,6 @@ import {
   Info,
 } from 'lucide-react';
 
-type PaletteMode = 'chatgpt' | 'gemini';
-
-const PALETTES: Record<PaletteMode, { income: string[]; expense: string[]; cc: string[] }> = {
-  chatgpt: {
-    // Pure green scale, darkest → lightest (assigned by rank)
-    income: ['#14532D', '#16A34A', '#4ADE80', '#BBF7D0'],
-    // Pure amber scale, darkest → lightest (assigned by rank)
-    expense: ['#92400E', '#B45309', '#D97706', '#F59E0B', '#FCD34D'],
-    // Warm-to-cool alternating for CC categories
-    cc: ['#B45309', '#2563EB', '#DC2626', '#16A34A', '#7C3AED',
-         '#D97706', '#0F766E', '#DB2777', '#EA580C', '#4F46E5'],
-  },
-  gemini: {
-    // Qualitative greens: dark green, mint, pale green, forest
-    income: ['#2D6A4F', '#52B788', '#B7E4C7', '#1B4332'],
-    // Terracotta, slate blue, sage, sand — diverse hues
-    expense: ['#E07A5F', '#3D405B', '#81B29A', '#F2CC8F', '#D56B4E', '#2E344A', '#6A9E85', '#E5B87A'],
-    // Pastel/muted diverse for CC categories
-    cc: ['#6366F1', '#EC4899', '#14B8A6', '#F97316', '#8B5CF6',
-         '#06B6D4', '#EF4444', '#10B981', '#F59E0B', '#3B82F6'],
-  },
-};
-
 const SOURCE_LABELS: Record<string, { label: string; icon: typeof Banknote }> = {
   CASH: { label: 'Efectivo', icon: Banknote },
   TRANSFER: { label: 'Transferencias', icon: ArrowLeftRight },
@@ -91,16 +67,9 @@ function PieCardSkeleton({ titleIcon: TitleIcon, title }: { titleIcon: typeof Tr
 }
 
 export default function MonthlyDetail({ detail, loading, onNavigateToTransactions }: MonthlyDetailProps) {
-  const [paletteMode, setPaletteMode] = useState<PaletteMode>('chatgpt');
-
   if (loading || !detail) {
     return (
       <div className="space-y-4">
-        <div className="flex items-center justify-end gap-1">
-          <span className="text-xs text-muted-foreground mr-1">Paleta:</span>
-          <Skeleton className="h-6 w-16" />
-          <Skeleton className="h-6 w-16" />
-        </div>
         <div className="grid gap-4 md:grid-cols-2">
           <PieCardSkeleton titleIcon={TrendingUp} title="Ingresos" />
           <PieCardSkeleton titleIcon={TrendingDown} title="Egresos Fijos" />
@@ -172,32 +141,20 @@ export default function MonthlyDetail({ detail, loading, onNavigateToTransaction
     );
   }
 
-  const { income: incomeColors, expense: expenseColors, cc: ccColors } = PALETTES[paletteMode];
-
   const incomeData = detail.income_items.map((item) => ({ name: item.name, value: item.amount }));
   const expenseData = detail.expense_items.map((item) => ({ name: item.name, value: item.amount }));
 
-  // For ChatGPT mode: assign colors by rank (largest = darkest)
+  // Sequential ramps: one hue per concept, largest slice = full token,
-  // For Gemini mode: assign colors by position (qualitative)
+  // smaller slices fade toward the surface (rank-ordered).
-  function buildColorMap(data: { name: string; value: number }[], colors: string[]): Map<string, string> {
+  function buildRampMap(data: { name: string; value: number }[], baseVar: string): Map<string, string> {
-    if (paletteMode === 'chatgpt') {
     const sorted = [...data].sort((a, b) => b.value - a.value);
     const map = new Map<string, string>();
-      sorted.forEach((item, i) => {
+    sorted.forEach((item, i) => map.set(item.name, rampColor(baseVar, i, sorted.length)));
-        map.set(item.name, colors[Math.min(i, colors.length - 1)]);
-      });
-      return map;
-    }
-    // Gemini: positional
-    const map = new Map<string, string>();
-    data.forEach((item, i) => {
-      map.set(item.name, colors[i % colors.length]);
-    });
     return map;
   }
 
-  const incomeColorMap = buildColorMap(incomeData, incomeColors);
+  const incomeColorMap = buildRampMap(incomeData, 'var(--chart-1)');
-  const expenseColorMap = buildColorMap(expenseData, expenseColors);
+  const expenseColorMap = buildRampMap(expenseData, 'var(--chart-2)');
 
   const incomeConfig = incomeData.reduce<ChartConfig>((acc, item) => {
     acc[item.name] = { label: item.name, color: incomeColorMap.get(item.name)! };
@@ -209,16 +166,28 @@ export default function MonthlyDetail({ detail, loading, onNavigateToTransaction
     return acc;
   }, {});
 
-  // CC spending by category
+  // CC by category: identity → categorical slots; past the 5th fold into "Otros".
-  const ccData = (detail.cc_by_category ?? []).map((item) => ({
+  const ccRaw = (detail.cc_by_category ?? []).map((item) => ({
     name: item.category_name,
     value: item.amount,
   }));
-  const ccConfig = ccData.reduce<ChartConfig>((acc, item, i) => {
+  const ccData =
-    acc[item.name] = { label: item.name, color: ccColors[i % ccColors.length] };
+    ccRaw.length <= MAX_SLICES
+      ? ccRaw
+      : [
+          ...ccRaw.slice(0, MAX_SLICES),
+          {
+            name: 'Otros',
+            value: ccRaw.slice(MAX_SLICES).reduce((s, c) => s + c.value, 0),
+          },
+        ];
+  const ccColorOf = (name: string) =>
+    categoricalColor(ccData.findIndex((c) => c.name === name), name);
+  const ccConfig = ccData.reduce<ChartConfig>((acc, item) => {
+    acc[item.name] = { label: item.name, color: ccColorOf(item.name) };
     return acc;
   }, {});
-  const ccTotal = ccData.reduce((sum, item) => sum + item.value, 0);
+  const ccTotal = ccRaw.reduce((sum, item) => sum + item.value, 0);
 
   // Filter actuals to only cash and transfer (no credit card)
   const cashTransferActuals = detail.actuals_by_source.filter(
@@ -227,27 +196,6 @@ export default function MonthlyDetail({ detail, loading, onNavigateToTransaction
 
   return (
     <div className="space-y-4">
-      {/* Palette Toggle */}
-      <div className="flex items-center justify-end gap-1">
-        <span className="text-xs text-muted-foreground mr-1">Paleta:</span>
-        <Button
-          variant={paletteMode === 'chatgpt' ? 'default' : 'outline'}
-          size="sm"
-          className="h-6 text-xs px-2"
-          onClick={() => setPaletteMode('chatgpt')}
-        >
-          ChatGPT
-        </Button>
-        <Button
-          variant={paletteMode === 'gemini' ? 'default' : 'outline'}
-          size="sm"
-          className="h-6 text-xs px-2"
-          onClick={() => setPaletteMode('gemini')}
-        >
-          Gemini
-        </Button>
-      </div>
-
       {/* Pie Charts */}
       <div className="grid gap-4 md:grid-cols-2">
         {/* Income Pie */}
@@ -274,6 +222,7 @@ export default function MonthlyDetail({ detail, loading, onNavigateToTransaction
                       paddingAngle={2}
                       strokeWidth={2}
                       stroke="var(--card)"
+                      isAnimationActive={false}
                     >
                       {incomeData.map((item, i) => (
                         <Cell key={i} fill={incomeColorMap.get(item.name)!} />
@@ -340,6 +289,7 @@ export default function MonthlyDetail({ detail, loading, onNavigateToTransaction
                       paddingAngle={2}
                       strokeWidth={2}
                       stroke="var(--card)"
+                      isAnimationActive={false}
                     >
                       {expenseData.map((item, i) => (
                         <Cell key={i} fill={expenseColorMap.get(item.name)!} />
@@ -406,9 +356,10 @@ export default function MonthlyDetail({ detail, loading, onNavigateToTransaction
                     paddingAngle={2}
                     strokeWidth={2}
                     stroke="var(--card)"
+                    isAnimationActive={false}
                   >
-                    {ccData.map((_, i) => (
+                    {ccData.map((item) => (
-                      <Cell key={i} fill={ccColors[i % ccColors.length]} />
+                      <Cell key={item.name} fill={ccColorOf(item.name)} />
                     ))}
                   </Pie>
                   <ChartTooltip
@@ -424,11 +375,11 @@ export default function MonthlyDetail({ detail, loading, onNavigateToTransaction
                 </PieChart>
               </ChartContainer>
               <div className="grid grid-cols-2 gap-x-4 gap-y-1 w-full md:w-1/2">
-                {ccData.map((item, i) => (
+                {ccData.map((item) => (
                   <div key={item.name} className="flex items-center gap-1.5 text-xs">
                     <div
                       className="w-2 h-2 rounded-full shrink-0"
-                      style={{ background: ccColors[i % ccColors.length] }}
+                      style={{ background: ccColorOf(item.name) }}
                     />
                     <span className="truncate text-muted-foreground">{item.name}</span>
                   </div>

frontend/src/components/budget/RecurringItemDialog.tsx

@@ -25,6 +25,7 @@ import {
 } from '@/components/ui/select';
 import { Textarea } from '@/components/ui/textarea';
 import { Plus, Trash2 } from 'lucide-react';
+import ConfirmDialog from '@/components/ConfirmDialog';
 
 const TYPE_OPTIONS: { value: RecurringItemType; label: string }[] = [
   { value: 'INCOME', label: 'Ingreso' },
@@ -73,11 +74,13 @@ export default function RecurringItemDialog({
   const snapshot = () =>
     JSON.stringify([name, amount, itemType, frequency, dayOfMonth, monthOfYear, overrides, notes]);
 
+  const [confirmDiscard, setConfirmDiscard] = useState(false);
+
   const handleOpenChange = (next: boolean) => {
     if (!next && !saving && snapshot() !== baseline) {
       // Closing with unsaved edits — confirm before discarding (UX-06).
-      const discard = window.confirm('Hay cambios sin guardar. ¿Descartarlos?');
+      setConfirmDiscard(true);
-      if (!discard) return;
+      return;
     }
     onOpenChange(next);
   };
@@ -338,6 +341,19 @@ export default function RecurringItemDialog({
           </Button>
         </DialogFooter>
       </DialogContent>
+
+      {confirmDiscard && (
+        <ConfirmDialog
+          title="Cambios sin guardar"
+          message="Hay cambios sin guardar. ¿Descartarlos?"
+          confirmLabel="Descartar"
+          onConfirm={() => {
+            setConfirmDiscard(false);
+            onOpenChange(false);
+          }}
+          onCancel={() => setConfirmDiscard(false)}
+        />
+      )}
     </Dialog>
   );
 }

frontend/src/components/budget/RecurringItemsManager.tsx

@@ -8,6 +8,7 @@ import {
 import { formatAmount } from '@/lib/format';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
+import { Card, CardContent } from '@/components/ui/card';
 import { DataTable } from '@/components/ui/data-table';
 import { DataTableColumnHeader } from '@/components/ui/data-table-column-header';
 import { Pencil, Plus, Trash2 } from 'lucide-react';
@@ -153,6 +154,8 @@ export default function RecurringItemsManager({
         </Button>
       </div>
 
+      <Card>
+        <CardContent className="p-0">
           <DataTable
             columns={columns}
             data={items}
@@ -161,6 +164,8 @@ export default function RecurringItemsManager({
             initialSorting={[{ id: 'item_type', desc: false }]}
             emptyMessage="No hay items recurrentes."
           />
+        </CardContent>
+      </Card>
 
       <RecurringItemDialog
         open={dialogOpen}

frontend/src/components/chat/ChatCards.tsx

@@ -76,7 +76,10 @@ export function SpendingSummaryCard({
   ];
 
   return (
-    <div className="rounded-xl border border-border bg-card text-card-foreground p-4 space-y-4 my-2 shadow-sm">
+    <div
+      data-testid="spending-summary-card"
+      className="rounded-xl border border-border bg-card text-card-foreground p-4 space-y-4 my-2 shadow-sm"
+    >
       {/* Header */}
       <div className="flex items-start justify-between gap-4">
         <div>

frontend/src/components/command-menu.tsx

@@ -0,0 +1,143 @@
+import { useEffect, useState } from "react";
+import { useNavigate } from "react-router-dom";
+import { Eye, EyeOff, Moon, Search, Sparkles, Sun } from "lucide-react";
+
+import { navSections } from "@/lib/navigation";
+import { useTheme } from "@/contexts/theme-context";
+import { usePrivacy } from "@/contexts/privacy-context";
+import { Button } from "@/components/ui/button";
+import { Kbd } from "@/components/ui/kbd";
+import {
+  Command,
+  CommandDialog,
+  CommandEmpty,
+  CommandGroup,
+  CommandInput,
+  CommandItem,
+  CommandList,
+  CommandSeparator,
+} from "@/components/ui/command";
+
+/** Global ⌘K palette: jump to any page, quick-toggle privacy/theme, or send
+ * what you typed straight to the Asistente (reuses the Inicio ask flow). */
+export function CommandMenu() {
+  const [open, setOpen] = useState(false);
+  const [query, setQuery] = useState("");
+  const navigate = useNavigate();
+  const { theme, toggleTheme } = useTheme();
+  const { privacyMode, togglePrivacy } = usePrivacy();
+
+  useEffect(() => {
+    const down = (e: KeyboardEvent) => {
+      if (e.key === "k" && (e.metaKey || e.ctrlKey)) {
+        e.preventDefault();
+        setOpen((o) => !o);
+      }
+    };
+    document.addEventListener("keydown", down);
+    return () => document.removeEventListener("keydown", down);
+  }, []);
+
+  const run = (fn: () => void) => {
+    setOpen(false);
+    setQuery("");
+    fn();
+  };
+
+  const ask = query.trim();
+
+  return (
+    <>
+      <Button
+        variant="outline"
+        size="sm"
+        onClick={() => setOpen(true)}
+        className="hidden sm:flex w-44 justify-start gap-2 text-muted-foreground font-normal"
+        aria-label="Abrir buscador (Cmd+K)"
+      >
+        <Search className="w-3.5 h-3.5" aria-hidden />
+        Buscar…
+        <Kbd className="ml-auto">⌘K</Kbd>
+      </Button>
+      <Button
+        variant="ghost"
+        size="icon"
+        onClick={() => setOpen(true)}
+        className="sm:hidden"
+        title="Buscar"
+        aria-label="Abrir buscador"
+      >
+        <Search className="w-4 h-4" aria-hidden />
+      </Button>
+
+      <CommandDialog
+        open={open}
+        onOpenChange={(next) => {
+          setOpen(next);
+          if (!next) setQuery("");
+        }}
+        title="Buscador"
+        description="Ir a una página o preguntarle al asistente"
+      >
+        <Command>
+        <CommandInput
+          placeholder="Ir a una página o preguntar…"
+          value={query}
+          onValueChange={setQuery}
+        />
+        <CommandList>
+          <CommandEmpty>Sin resultados.</CommandEmpty>
+          {navSections.map((section) => (
+            <CommandGroup key={section.label} heading={section.label}>
+              {section.items.map(({ to, icon: Icon, label }) => (
+                <CommandItem
+                  key={to}
+                  value={`${section.label} ${label}`}
+                  onSelect={() => run(() => navigate(to))}
+                >
+                  <Icon aria-hidden />
+                  {label}
+                </CommandItem>
+              ))}
+            </CommandGroup>
+          ))}
+          <CommandSeparator />
+          <CommandGroup heading="Acciones">
+            <CommandItem
+              value="modo privado privacidad"
+              onSelect={() => run(togglePrivacy)}
+            >
+              {privacyMode ? <EyeOff aria-hidden /> : <Eye aria-hidden />}
+              {privacyMode ? "Desactivar modo privado" : "Activar modo privado"}
+            </CommandItem>
+            <CommandItem
+              value="tema oscuro claro"
+              onSelect={() => run(toggleTheme)}
+            >
+              {theme === "dark" ? <Sun aria-hidden /> : <Moon aria-hidden />}
+              {theme === "dark" ? "Tema claro" : "Tema oscuro"}
+            </CommandItem>
+          </CommandGroup>
+          {ask.length > 2 && (
+            <>
+              <CommandSeparator />
+              <CommandGroup heading="Asistente">
+                {/* value includes the query so cmdk never filters it out */}
+                <CommandItem
+                  value={`preguntar ${ask}`}
+                  onSelect={() =>
+                    run(() => navigate("/asistente", { state: { ask } }))
+                  }
+                >
+                  <Sparkles className="text-primary" aria-hidden />
+                  Preguntar: “{ask}”
+                </CommandItem>
+              </CommandGroup>
+            </>
+          )}
+        </CommandList>
+        </Command>
+      </CommandDialog>
+    </>
+  );
+}

frontend/src/components/nav-user.tsx

@@ -0,0 +1,108 @@
+import { ChevronsUpDown, Eye, EyeOff, LogOut, Moon, Sun } from "lucide-react";
+import { useNavigate } from "react-router-dom";
+import { useQuery } from "@tanstack/react-query";
+
+import { getMe } from "@/lib/api";
+import { useTheme } from "@/contexts/theme-context";
+import { usePrivacy } from "@/contexts/privacy-context";
+import { useAuth } from "@/AuthContext";
+import { Avatar, AvatarFallback } from "@/components/ui/avatar";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuGroup,
+  DropdownMenuItem,
+  DropdownMenuLabel,
+  DropdownMenuSeparator,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
+import {
+  SidebarMenu,
+  SidebarMenuButton,
+  SidebarMenuItem,
+  useSidebar,
+} from "@/components/ui/sidebar";
+
+export function NavUser() {
+  const { isMobile } = useSidebar();
+  const { theme, toggleTheme } = useTheme();
+  const { privacyMode, togglePrivacy } = usePrivacy();
+  const { logout } = useAuth();
+  const navigate = useNavigate();
+
+  const meQ = useQuery({
+    queryKey: ["me"],
+    queryFn: () => getMe().then((r) => r.data),
+    staleTime: Infinity,
+  });
+  const username = meQ.data?.username ?? "Usuario";
+  const initials = username.slice(0, 2).toUpperCase();
+
+  const handleLogout = async () => {
+    await logout();
+    navigate("/login", { replace: true });
+  };
+
+  return (
+    <SidebarMenu>
+      <SidebarMenuItem>
+        <DropdownMenu>
+          <DropdownMenuTrigger
+            render={
+              <SidebarMenuButton size="lg" className="aria-expanded:bg-muted" />
+            }
+          >
+            <Avatar>
+              <AvatarFallback>{initials}</AvatarFallback>
+            </Avatar>
+            <div className="grid flex-1 text-left text-sm leading-tight">
+              <span className="truncate font-medium">{username}</span>
+              <span className="truncate text-xs text-muted-foreground">
+                WealthySmart
+              </span>
+            </div>
+            <ChevronsUpDown className="ml-auto size-4" />
+          </DropdownMenuTrigger>
+          <DropdownMenuContent
+            className="w-fit min-w-48"
+            side={isMobile ? "bottom" : "right"}
+            align="end"
+            sideOffset={4}
+          >
+            <DropdownMenuGroup>
+              <DropdownMenuLabel className="p-0 font-normal">
+                <div className="flex items-center gap-2 px-1 py-1.5 text-left text-sm">
+                  <Avatar>
+                    <AvatarFallback>{initials}</AvatarFallback>
+                  </Avatar>
+                  <div className="grid flex-1 text-left text-sm leading-tight">
+                    <span className="truncate font-medium">{username}</span>
+                    <span className="truncate text-xs text-muted-foreground">
+                      WealthySmart
+                    </span>
+                  </div>
+                </div>
+              </DropdownMenuLabel>
+            </DropdownMenuGroup>
+            <DropdownMenuSeparator />
+            <DropdownMenuGroup>
+              <DropdownMenuItem onClick={togglePrivacy}>
+                {privacyMode ? <EyeOff /> : <Eye />}
+                {privacyMode ? "Desactivar modo privado" : "Modo privado"}
+              </DropdownMenuItem>
+              <DropdownMenuItem onClick={toggleTheme}>
+                {theme === "dark" ? <Sun /> : <Moon />}
+                {theme === "dark" ? "Tema claro" : "Tema oscuro"}
+              </DropdownMenuItem>
+            </DropdownMenuGroup>
+            <DropdownMenuSeparator />
+            <DropdownMenuItem onClick={() => void handleLogout()}>
+              <LogOut />
+              Cerrar sesión
+            </DropdownMenuItem>
+          </DropdownMenuContent>
+        </DropdownMenu>
+      </SidebarMenuItem>
+    </SidebarMenu>
+  );
+}

frontend/src/components/page-header.tsx

@@ -0,0 +1,41 @@
+import type { LucideIcon } from "lucide-react";
+
+/** Standard page header: icon tile + title + optional subtitle on the left,
+ * page-level actions (period navigators, CSV, refresh…) on the right.
+ * Every page uses this — the breadcrumb in the shell header stays the only
+ * other place a page identifies itself. */
+export function PageHeader({
+  icon: Icon,
+  title,
+  subtitle,
+  actions,
+}: {
+  icon: LucideIcon;
+  title: string;
+  subtitle?: string;
+  actions?: React.ReactNode;
+}) {
+  return (
+    <div className="flex flex-wrap items-start justify-between gap-3">
+      <div className="flex items-center gap-3">
+        <div className="flex size-10 shrink-0 items-center justify-center rounded-lg bg-primary/10 text-primary">
+          <Icon className="size-5" aria-hidden />
+        </div>
+        <div>
+          <h1
+            className="text-2xl font-bold tracking-tight"
+            style={{ fontFamily: "var(--font-heading)" }}
+          >
+            {title}
+          </h1>
+          {subtitle && (
+            <p className="text-sm text-muted-foreground">{subtitle}</p>
+          )}
+        </div>
+      </div>
+      {actions && (
+        <div className="flex items-center gap-2">{actions}</div>
+      )}
+    </div>
+  );
+}

frontend/src/components/stat-tile.tsx

@@ -0,0 +1,115 @@
+import { Link } from "react-router-dom";
+
+import { cn } from "@/lib/utils";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import {
+  HoverCard,
+  HoverCardContent,
+  HoverCardTrigger,
+} from "@/components/ui/hover-card";
+import { Skeleton } from "@/components/ui/skeleton";
+
+/** Stat-tile contract (dataviz skill): label · value · optional delta ·
+ * optional context/detail rows. Values are pre-formatted by the caller
+ * (formatAmount etc.) and blur under privacy mode via data-sensitive. */
+export interface StatTileProps {
+  label: string;
+  /** Small line under the label, e.g. "Ciclo al 18 jul". */
+  description?: string;
+  /** Pre-formatted headline value. null renders an em dash. */
+  value: string | null;
+  loading?: boolean;
+  /** Signed, pre-formatted delta plus whether it's good news (colors it). */
+  delta?: { text: string; positive: boolean };
+  /** Muted line(s) or detail rows under the value. */
+  children?: React.ReactNode;
+  /** Makes the whole tile a link (adds hover border + focus ring). */
+  to?: string;
+  ariaLabel?: string;
+  /** Extra detail revealed on hover (HoverCard). */
+  hoverContent?: React.ReactNode;
+  /** Set false for non-monetary values that shouldn't blur (counts, dates). */
+  sensitive?: boolean;
+  className?: string;
+}
+
+export function StatTile({
+  label,
+  description,
+  value,
+  loading = false,
+  delta,
+  children,
+  to,
+  ariaLabel,
+  hoverContent,
+  sensitive = true,
+  className,
+}: StatTileProps) {
+  const card = (
+    <Card
+      className={cn(
+        "h-full",
+        to && "transition-colors hover:border-primary/40 cursor-pointer",
+        className,
+      )}
+    >
+      <CardHeader className="pb-2">
+        <CardTitle className="text-sm font-medium text-muted-foreground">
+          {label}
+        </CardTitle>
+        {description && (
+          <p className="text-xs text-muted-foreground/80">{description}</p>
+        )}
+      </CardHeader>
+      <CardContent className="space-y-2">
+        <div className="flex items-baseline gap-2">
+          {loading ? (
+            <Skeleton className="h-8 w-32" />
+          ) : (
+            <span
+              {...(sensitive ? { "data-sensitive": true } : {})}
+              className="text-2xl font-bold font-mono"
+            >
+              {value ?? "—"}
+            </span>
+          )}
+          {!loading && delta && (
+            <span
+              data-sensitive
+              className={cn(
+                "text-xs font-mono font-medium",
+                delta.positive ? "text-primary" : "text-destructive",
+              )}
+            >
+              {delta.text}
+            </span>
+          )}
+        </div>
+        {children}
+      </CardContent>
+    </Card>
+  );
+
+  const wrapped = to ? (
+    <Link
+      to={to}
+      aria-label={ariaLabel ?? label}
+      className="block h-full rounded-xl focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
+    >
+      {card}
+    </Link>
+  ) : (
+    card
+  );
+
+  if (!hoverContent) return wrapped;
+  return (
+    <HoverCard>
+      <HoverCardTrigger render={<div className="h-full" />}>
+        {wrapped}
+      </HoverCardTrigger>
+      <HoverCardContent className="w-80">{hoverContent}</HoverCardContent>
+    </HoverCard>
+  );
+}

frontend/src/components/transactions/ConvertToInstallmentsDialog.tsx

@@ -0,0 +1,288 @@
+import { useEffect, useMemo, useState } from 'react';
+import { useQuery } from '@tanstack/react-query';
+import { toast } from 'sonner';
+
+import {
+  createInstallmentPlan,
+  deleteInstallmentPlan,
+  getInstallmentPlans,
+  updateInstallmentPlan,
+  type InstallmentPlan,
+  type Transaction,
+} from '@/lib/api';
+import { formatAmount } from '@/lib/format';
+import { Button } from '@/components/ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogFooter,
+} from '@/components/ui/dialog';
+import { Input } from '@/components/ui/input';
+import ConfirmDialog from '@/components/ConfirmDialog';
+import { Label } from '@/components/ui/label';
+
+/** Mirror of the backend cuota split (services/installments.py): truncate to
+ * 0.10, last cuota absorbs the remainder. Preview only — the backend is the
+ * source of truth. */
+function computeAmounts(total: number, n: number): number[] {
+  const per = Math.floor((total / n) * 10) / 10;
+  const last = Math.round((total - per * (n - 1)) * 100) / 100;
+  return [...Array<number>(n - 1).fill(per), last];
+}
+
+/** Mirror of the backend schedule: cuota 1 on the chosen date, then the 19th
+ * of consecutive billing-cycle months (cycles cut on the 18th). */
+function computeDates(first: Date, n: number): Date[] {
+  let cy = first.getFullYear();
+  let cm = first.getMonth();
+  if (first.getDate() < 18) {
+    cm -= 1;
+    if (cm < 0) {
+      cm = 11;
+      cy -= 1;
+    }
+  }
+  const dates = [first];
+  for (let i = 1; i < n; i++) dates.push(new Date(cy, cm + i, 19));
+  return dates;
+}
+
+function toDateInputValue(iso: string): string {
+  return iso.slice(0, 10);
+}
+
+interface ConvertToInstallmentsDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  onSaved: () => void;
+  /** Create mode: the transaction to convert. If it is already an anchor,
+   * its plan is looked up and the dialog switches to edit mode. */
+  tx?: Transaction | null;
+  /** Edit mode: the plan to edit (e.g. from the Financiamientos page). */
+  plan?: InstallmentPlan | null;
+}
+
+export default function ConvertToInstallmentsDialog({
+  open,
+  onOpenChange,
+  onSaved,
+  tx,
+  plan,
+}: ConvertToInstallmentsDialogProps) {
+  // An anchor transaction without an explicit plan -> find it in the list.
+  const needsLookup = open && !plan && !!tx?.is_installment_anchor;
+  const plansQ = useQuery({
+    queryKey: ['installment-plans'],
+    queryFn: ({ signal: _s }) => getInstallmentPlans().then((r) => r.data),
+    enabled: needsLookup,
+  });
+  const effectivePlan =
+    plan ??
+    (needsLookup
+      ? plansQ.data?.plans.find((p) => p.anchor_transaction_id === tx?.id) ?? null
+      : null);
+  const isEdit = !!effectivePlan;
+
+  const total = effectivePlan ? effectivePlan.total_amount : tx?.amount ?? 0;
+  const currency = effectivePlan ? effectivePlan.currency : tx?.currency ?? 'CRC';
+  const merchant = effectivePlan ? effectivePlan.merchant : tx?.merchant ?? '';
+  const purchaseDate = effectivePlan
+    ? effectivePlan.purchase_date
+    : tx?.date ?? new Date().toISOString();
+
+  const [numStr, setNumStr] = useState('3');
+  const [confirmUnconvert, setConfirmUnconvert] = useState(false);
+  const [firstDate, setFirstDate] = useState('');
+  const [saving, setSaving] = useState(false);
+
+  useEffect(() => {
+    if (!open) return;
+    setNumStr(String(effectivePlan?.num_installments ?? 3));
+    setFirstDate(
+      toDateInputValue(effectivePlan?.first_installment_date ?? purchaseDate),
+    );
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [open, effectivePlan?.id, tx?.id]);
+
+  const n = parseInt(numStr, 10);
+  const validN = Number.isFinite(n) && n >= 2 && n <= 48;
+  const preview = useMemo(() => {
+    if (!validN || !firstDate) return [];
+    const amounts = computeAmounts(total, n);
+    const dates = computeDates(new Date(`${firstDate}T00:00:00`), n);
+    return amounts.map((amount, i) => ({ amount, date: dates[i] }));
+  }, [validN, n, firstDate, total]);
+
+  const handleSave = async () => {
+    if (!validN) return;
+    setSaving(true);
+    try {
+      if (isEdit && effectivePlan) {
+        await updateInstallmentPlan(effectivePlan.id, {
+          num_installments: n,
+          first_installment_date: firstDate,
+        });
+        toast.success('Plan Tasa Cero actualizado');
+      } else if (tx) {
+        await createInstallmentPlan({
+          transaction_id: tx.id,
+          num_installments: n,
+          first_installment_date: firstDate,
+        });
+        toast.success(`Convertida a Tasa Cero (${n} cuotas)`);
+      }
+      onSaved();
+      onOpenChange(false);
+    } catch {
+      toast.error('No se pudo guardar el plan Tasa Cero');
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  const handleUnconvert = async () => {
+    if (!effectivePlan) return;
+    setConfirmUnconvert(false);
+    setSaving(true);
+    try {
+      await deleteInstallmentPlan(effectivePlan.id);
+      toast.success('Plan Tasa Cero eliminado');
+      onSaved();
+      onOpenChange(false);
+    } catch {
+      toast.error('No se pudo eliminar el plan');
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={(next) => !saving && onOpenChange(next)}>
+      <DialogContent className="sm:max-w-md">
+        <DialogHeader>
+          <DialogTitle>
+            {isEdit ? 'Editar plan Tasa Cero' : 'Convertir a Tasa Cero'}
+          </DialogTitle>
+        </DialogHeader>
+
+        <div className="space-y-4 py-2">
+          <div className="rounded-lg border bg-muted/40 px-3 py-2 text-sm">
+            <p className="font-medium truncate">{merchant}</p>
+            <p className="text-muted-foreground">
+              <span data-sensitive className="font-mono">
+                {formatAmount(total, currency)}
+              </span>
+              {' — '}
+              {new Date(purchaseDate).toLocaleDateString('es-CR', {
+                day: 'numeric',
+                month: 'short',
+                year: 'numeric',
+              })}
+            </p>
+          </div>
+
+          {needsLookup && plansQ.isPending ? (
+            <p className="text-sm text-muted-foreground">Cargando plan…</p>
+          ) : (
+            <>
+              <div className="grid grid-cols-2 gap-3">
+                <div className="space-y-1.5">
+                  <Label htmlFor="tc-cuotas">Número de cuotas</Label>
+                  <Input
+                    id="tc-cuotas"
+                    type="number"
+                    min={2}
+                    max={48}
+                    value={numStr}
+                    onChange={(e) => setNumStr(e.target.value)}
+                  />
+                </div>
+                <div className="space-y-1.5">
+                  <Label htmlFor="tc-first">Primera cuota</Label>
+                  <Input
+                    id="tc-first"
+                    type="date"
+                    value={firstDate}
+                    onChange={(e) => setFirstDate(e.target.value)}
+                  />
+                </div>
+              </div>
+
+              {preview.length > 0 && (
+                <div className="space-y-1">
+                  <Label className="text-xs text-muted-foreground">
+                    Cuotas proyectadas
+                  </Label>
+                  <div className="rounded-lg border divide-y divide-border max-h-44 overflow-y-auto">
+                    {preview.map((c, i) => (
+                      <div
+                        key={i}
+                        className="flex items-center justify-between px-3 py-1.5 text-sm"
+                      >
+                        <span className="text-muted-foreground font-mono text-xs">
+                          {String(i + 1).padStart(2, '0')}/
+                          {String(n).padStart(2, '0')} —{' '}
+                          {c.date.toLocaleDateString('es-CR', {
+                            day: 'numeric',
+                            month: 'short',
+                            year: 'numeric',
+                          })}
+                        </span>
+                        <span data-sensitive className="font-mono">
+                          {formatAmount(c.amount, currency)}
+                        </span>
+                      </div>
+                    ))}
+                  </div>
+                </div>
+              )}
+            </>
+          )}
+        </div>
+
+        <DialogFooter className="gap-2 sm:justify-between">
+          {isEdit ? (
+            <Button
+              variant="outline"
+              className="text-destructive hover:text-destructive"
+              onClick={() => setConfirmUnconvert(true)}
+              disabled={saving}
+            >
+              Deshacer Tasa Cero
+            </Button>
+          ) : (
+            <span />
+          )}
+          <div className="flex gap-2">
+            <Button
+              variant="outline"
+              onClick={() => onOpenChange(false)}
+              disabled={saving}
+            >
+              Cancelar
+            </Button>
+            <Button
+              onClick={handleSave}
+              disabled={saving || !validN || !firstDate || (needsLookup && !effectivePlan)}
+            >
+              {saving ? 'Guardando…' : isEdit ? 'Guardar' : 'Convertir'}
+            </Button>
+          </div>
+        </DialogFooter>
+      </DialogContent>
+
+      {confirmUnconvert && (
+        <ConfirmDialog
+          title="Deshacer Tasa Cero"
+          message="Se eliminarán las cuotas y la compra volverá a contar como un solo cargo. Esta acción no se puede deshacer."
+          confirmLabel="Deshacer plan"
+          loading={saving}
+          onConfirm={handleUnconvert}
+          onCancel={() => setConfirmUnconvert(false)}
+        />
+      )}
+    </Dialog>
+  );
+}

frontend/src/components/transactions/transaction-columns.tsx

@@ -1,5 +1,5 @@
 import { type ColumnDef } from '@tanstack/react-table';
-import { ArrowLeftRight, ArrowRightFromLine, Banknote, Pencil, Trash2, TrendingDown, TrendingUp } from 'lucide-react';
+import { ArrowLeftRight, ArrowRightFromLine, Banknote, Layers, Pencil, Trash2, TrendingDown, TrendingUp } from 'lucide-react';
 
 import { type Transaction } from '@/lib/api';
 import { formatAmount } from '@/lib/format';
@@ -21,6 +21,7 @@ interface TransactionColumnOptions {
   onEdit: (tx: Transaction) => void;
   onDelete: (txId: number) => void;
   onToggleDeferred?: (tx: Transaction) => void;
+  onConvertTasaCero?: (tx: Transaction) => void;
   selection?: RowSelection;
 }
 
@@ -30,6 +31,7 @@ export function getTransactionColumns({
   onEdit,
   onDelete,
   onToggleDeferred,
+  onConvertTasaCero,
   selection,
 }: TransactionColumnOptions): ColumnDef<Transaction, unknown>[] {
   const columns: ColumnDef<Transaction, unknown>[] = [];
@@ -63,7 +65,7 @@ export function getTransactionColumns({
   columns.push(
     {
       accessorKey: 'date',
-      header: ({ column }) => <DataTableColumnHeader column={column} title="Date" />,
+      header: ({ column }) => <DataTableColumnHeader column={column} title="Fecha" />,
       cell: ({ row }) => (
         <span className="font-mono text-muted-foreground text-xs whitespace-nowrap">
           {new Date(row.original.date).toLocaleDateString('es-CR', {
@@ -76,7 +78,7 @@ export function getTransactionColumns({
     },
     {
       accessorKey: 'merchant',
-      header: ({ column }) => <DataTableColumnHeader column={column} title="Merchant" />,
+      header: ({ column }) => <DataTableColumnHeader column={column} title="Comercio" />,
       cell: ({ row }) => {
         const tx = row.original;
         return (
@@ -107,6 +109,16 @@ export function getTransactionColumns({
                 Diferida
               </Badge>
             )}
+            {tx.is_installment_anchor && (
+              <Badge variant="outline" className="ml-1.5 text-[10px] px-1 py-0 shrink-0 text-violet-600 border-violet-300">
+                Tasa Cero
+              </Badge>
+            )}
+            {tx.installment_plan_id != null && (
+              <Badge variant="outline" className="ml-1.5 text-[10px] px-1 py-0 shrink-0 text-violet-500/80 border-violet-200">
+                Cuota
+              </Badge>
+            )}
           </div>
         );
       },
@@ -117,7 +129,7 @@ export function getTransactionColumns({
     columns.push({
       accessorFn: (row) => row.category?.name ?? '',
       id: 'category',
-      header: ({ column }) => <DataTableColumnHeader column={column} title="Category" />,
+      header: ({ column }) => <DataTableColumnHeader column={column} title="Categoría" />,
       cell: ({ row }) => {
         const category = row.original.category;
         return category ? (
@@ -134,7 +146,7 @@ export function getTransactionColumns({
       accessorKey: 'amount',
       meta: { className: 'text-right' },
       header: ({ column }) => (
-        <DataTableColumnHeader column={column} title="Amount" className="justify-end" />
+        <DataTableColumnHeader column={column} title="Monto" className="justify-end" />
       ),
       cell: ({ row }) => {
         const tx = row.original;
@@ -144,7 +156,8 @@ export function getTransactionColumns({
             className={cn(
               'font-mono font-medium',
               tx.transaction_type !== 'COMPRA' && 'text-primary',
-              tx.deferred_to_next_cycle && 'opacity-50 line-through decoration-muted-foreground/60',
+              (tx.deferred_to_next_cycle || tx.is_installment_anchor) &&
+                'opacity-50 line-through decoration-muted-foreground/60',
             )}
           >
             {tx.transaction_type === 'COMPRA' ? '-' : '+'}
@@ -162,7 +175,21 @@ export function getTransactionColumns({
         const tx = row.original;
         return (
           <div className="flex items-center justify-end gap-1">
-            {onToggleDeferred && (
+            {onConvertTasaCero &&
+              tx.transaction_type === 'COMPRA' &&
+              tx.installment_plan_id == null && (
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  title={tx.is_installment_anchor ? 'Editar plan Tasa Cero' : 'Convertir a Tasa Cero'}
+                  aria-label={tx.is_installment_anchor ? 'Edit Tasa Cero plan' : 'Convert to Tasa Cero'}
+                  onClick={() => onConvertTasaCero(tx)}
+                  className={cn(tx.is_installment_anchor && 'text-violet-600')}
+                >
+                  <Layers className="w-4 h-4" />
+                </Button>
+              )}
+            {onToggleDeferred && tx.installment_plan_id == null && (
               <Button
                 variant="ghost"
                 size="icon"
@@ -177,7 +204,7 @@ export function getTransactionColumns({
             <Button
               variant="ghost"
               size="icon"
-              title="Edit transaction"
+              title="Editar transacción"
               aria-label="Edit transaction"
               onClick={() => onEdit(tx)}
             >
@@ -186,7 +213,7 @@ export function getTransactionColumns({
             <Button
               variant="ghost"
               size="icon"
-              title="Delete transaction"
+              title="Eliminar transacción"
               aria-label="Delete transaction"
               onClick={() => onDelete(tx.id)}
               className="hover:text-destructive"

frontend/src/components/ui/avatar.tsx

@@ -0,0 +1,109 @@
+"use client"
+
+import * as React from "react"
+import { Avatar as AvatarPrimitive } from "@base-ui/react/avatar"
+
+import { cn } from "@/lib/utils"
+
+function Avatar({
+  className,
+  size = "default",
+  ...props
+}: AvatarPrimitive.Root.Props & {
+  size?: "default" | "sm" | "lg"
+}) {
+  return (
+    <AvatarPrimitive.Root
+      data-slot="avatar"
+      data-size={size}
+      className={cn(
+        "group/avatar relative flex size-8 shrink-0 rounded-full select-none after:absolute after:inset-0 after:rounded-full after:border after:border-border after:mix-blend-darken data-[size=lg]:size-10 data-[size=sm]:size-6 dark:after:mix-blend-lighten",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function AvatarImage({ className, ...props }: AvatarPrimitive.Image.Props) {
+  return (
+    <AvatarPrimitive.Image
+      data-slot="avatar-image"
+      className={cn(
+        "aspect-square size-full rounded-full object-cover",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function AvatarFallback({
+  className,
+  ...props
+}: AvatarPrimitive.Fallback.Props) {
+  return (
+    <AvatarPrimitive.Fallback
+      data-slot="avatar-fallback"
+      className={cn(
+        "flex size-full items-center justify-center rounded-full bg-muted text-sm text-muted-foreground group-data-[size=sm]/avatar:text-xs",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function AvatarBadge({ className, ...props }: React.ComponentProps<"span">) {
+  return (
+    <span
+      data-slot="avatar-badge"
+      className={cn(
+        "absolute right-0 bottom-0 z-10 inline-flex items-center justify-center rounded-full bg-primary text-primary-foreground bg-blend-color ring-2 ring-background select-none",
+        "group-data-[size=sm]/avatar:size-2 group-data-[size=sm]/avatar:[&>svg]:hidden",
+        "group-data-[size=default]/avatar:size-2.5 group-data-[size=default]/avatar:[&>svg]:size-2",
+        "group-data-[size=lg]/avatar:size-3 group-data-[size=lg]/avatar:[&>svg]:size-2",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function AvatarGroup({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="avatar-group"
+      className={cn(
+        "group/avatar-group flex -space-x-2 *:data-[slot=avatar]:ring-2 *:data-[slot=avatar]:ring-background",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function AvatarGroupCount({
+  className,
+  ...props
+}: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="avatar-group-count"
+      className={cn(
+        "relative flex size-8 shrink-0 items-center justify-center rounded-full bg-muted text-sm text-muted-foreground ring-2 ring-background group-has-data-[size=lg]/avatar-group:size-10 group-has-data-[size=sm]/avatar-group:size-6 [&>svg]:size-4 group-has-data-[size=lg]/avatar-group:[&>svg]:size-5 group-has-data-[size=sm]/avatar-group:[&>svg]:size-3",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export {
+  Avatar,
+  AvatarImage,
+  AvatarFallback,
+  AvatarGroup,
+  AvatarGroupCount,
+  AvatarBadge,
+}

frontend/src/components/ui/breadcrumb.tsx

@@ -0,0 +1,125 @@
+import * as React from "react"
+import { mergeProps } from "@base-ui/react/merge-props"
+import { useRender } from "@base-ui/react/use-render"
+
+import { cn } from "@/lib/utils"
+import { ChevronRightIcon, MoreHorizontalIcon } from "lucide-react"
+
+function Breadcrumb({ className, ...props }: React.ComponentProps<"nav">) {
+  return (
+    <nav
+      aria-label="breadcrumb"
+      data-slot="breadcrumb"
+      className={cn(className)}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbList({ className, ...props }: React.ComponentProps<"ol">) {
+  return (
+    <ol
+      data-slot="breadcrumb-list"
+      className={cn(
+        "flex flex-wrap items-center gap-1.5 text-sm wrap-break-word text-muted-foreground",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbItem({ className, ...props }: React.ComponentProps<"li">) {
+  return (
+    <li
+      data-slot="breadcrumb-item"
+      className={cn("inline-flex items-center gap-1", className)}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbLink({
+  className,
+  render,
+  ...props
+}: useRender.ComponentProps<"a">) {
+  return useRender({
+    defaultTagName: "a",
+    props: mergeProps<"a">(
+      {
+        className: cn("transition-colors hover:text-foreground", className),
+      },
+      props
+    ),
+    render,
+    state: {
+      slot: "breadcrumb-link",
+    },
+  })
+}
+
+function BreadcrumbPage({ className, ...props }: React.ComponentProps<"span">) {
+  return (
+    <span
+      data-slot="breadcrumb-page"
+      role="link"
+      aria-disabled="true"
+      aria-current="page"
+      className={cn("font-normal text-foreground", className)}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbSeparator({
+  children,
+  className,
+  ...props
+}: React.ComponentProps<"li">) {
+  return (
+    <li
+      data-slot="breadcrumb-separator"
+      role="presentation"
+      aria-hidden="true"
+      className={cn("[&>svg]:size-3.5", className)}
+      {...props}
+    >
+      {children ?? (
+        <ChevronRightIcon />
+      )}
+    </li>
+  )
+}
+
+function BreadcrumbEllipsis({
+  className,
+  ...props
+}: React.ComponentProps<"span">) {
+  return (
+    <span
+      data-slot="breadcrumb-ellipsis"
+      role="presentation"
+      aria-hidden="true"
+      className={cn(
+        "flex size-5 items-center justify-center [&>svg]:size-4",
+        className
+      )}
+      {...props}
+    >
+      <MoreHorizontalIcon
+      />
+      <span className="sr-only">More</span>
+    </span>
+  )
+}
+
+export {
+  Breadcrumb,
+  BreadcrumbList,
+  BreadcrumbItem,
+  BreadcrumbLink,
+  BreadcrumbPage,
+  BreadcrumbSeparator,
+  BreadcrumbEllipsis,
+}

frontend/src/components/ui/calendar.tsx

@@ -0,0 +1,221 @@
+"use client"
+
+import * as React from "react"
+import {
+  DayPicker,
+  getDefaultClassNames,
+  type DayButton,
+  type Locale,
+} from "react-day-picker"
+
+import { cn } from "@/lib/utils"
+import { Button, buttonVariants } from "@/components/ui/button"
+import { ChevronLeftIcon, ChevronRightIcon, ChevronDownIcon } from "lucide-react"
+
+function Calendar({
+  className,
+  classNames,
+  showOutsideDays = true,
+  captionLayout = "label",
+  buttonVariant = "ghost",
+  locale,
+  formatters,
+  components,
+  ...props
+}: React.ComponentProps<typeof DayPicker> & {
+  buttonVariant?: React.ComponentProps<typeof Button>["variant"]
+}) {
+  const defaultClassNames = getDefaultClassNames()
+
+  return (
+    <DayPicker
+      showOutsideDays={showOutsideDays}
+      className={cn(
+        "group/calendar bg-background p-2 [--cell-radius:var(--radius-md)] [--cell-size:--spacing(7)] in-data-[slot=card-content]:bg-transparent in-data-[slot=popover-content]:bg-transparent",
+        String.raw`rtl:**:[.rdp-button\_next>svg]:rotate-180`,
+        String.raw`rtl:**:[.rdp-button\_previous>svg]:rotate-180`,
+        className
+      )}
+      captionLayout={captionLayout}
+      locale={locale}
+      formatters={{
+        formatMonthDropdown: (date) =>
+          date.toLocaleString(locale?.code, { month: "short" }),
+        ...formatters,
+      }}
+      classNames={{
+        root: cn("w-fit", defaultClassNames.root),
+        months: cn(
+          "relative flex flex-col gap-4 md:flex-row",
+          defaultClassNames.months
+        ),
+        month: cn("flex w-full flex-col gap-4", defaultClassNames.month),
+        nav: cn(
+          "absolute inset-x-0 top-0 flex w-full items-center justify-between gap-1",
+          defaultClassNames.nav
+        ),
+        button_previous: cn(
+          buttonVariants({ variant: buttonVariant }),
+          "size-(--cell-size) p-0 select-none aria-disabled:opacity-50",
+          defaultClassNames.button_previous
+        ),
+        button_next: cn(
+          buttonVariants({ variant: buttonVariant }),
+          "size-(--cell-size) p-0 select-none aria-disabled:opacity-50",
+          defaultClassNames.button_next
+        ),
+        month_caption: cn(
+          "flex h-(--cell-size) w-full items-center justify-center px-(--cell-size)",
+          defaultClassNames.month_caption
+        ),
+        dropdowns: cn(
+          "flex h-(--cell-size) w-full items-center justify-center gap-1.5 text-sm font-medium",
+          defaultClassNames.dropdowns
+        ),
+        dropdown_root: cn(
+          "relative rounded-(--cell-radius)",
+          defaultClassNames.dropdown_root
+        ),
+        dropdown: cn(
+          "absolute inset-0 bg-popover opacity-0",
+          defaultClassNames.dropdown
+        ),
+        caption_label: cn(
+          "font-medium select-none",
+          captionLayout === "label"
+            ? "text-sm"
+            : "flex items-center gap-1 rounded-(--cell-radius) text-sm [&>svg]:size-3.5 [&>svg]:text-muted-foreground",
+          defaultClassNames.caption_label
+        ),
+        month_grid: cn("w-full border-collapse", defaultClassNames.month_grid),
+        weekdays: cn("flex", defaultClassNames.weekdays),
+        weekday: cn(
+          "flex-1 rounded-(--cell-radius) text-[0.8rem] font-normal text-muted-foreground select-none",
+          defaultClassNames.weekday
+        ),
+        week: cn("mt-2 flex w-full", defaultClassNames.week),
+        week_number_header: cn(
+          "w-(--cell-size) select-none",
+          defaultClassNames.week_number_header
+        ),
+        week_number: cn(
+          "text-[0.8rem] text-muted-foreground select-none",
+          defaultClassNames.week_number
+        ),
+        day: cn(
+          "group/day relative aspect-square h-full w-full rounded-(--cell-radius) p-0 text-center select-none [&:last-child[data-selected=true]_button]:rounded-r-(--cell-radius)",
+          props.showWeekNumber
+            ? "[&:nth-child(2)[data-selected=true]_button]:rounded-l-(--cell-radius)"
+            : "[&:first-child[data-selected=true]_button]:rounded-l-(--cell-radius)",
+          defaultClassNames.day
+        ),
+        range_start: cn(
+          "relative isolate z-0 rounded-l-(--cell-radius) bg-muted after:absolute after:inset-y-0 after:right-0 after:w-4 after:bg-muted",
+          defaultClassNames.range_start
+        ),
+        range_middle: cn("rounded-none", defaultClassNames.range_middle),
+        range_end: cn(
+          "relative isolate z-0 rounded-r-(--cell-radius) bg-muted after:absolute after:inset-y-0 after:left-0 after:w-4 after:bg-muted",
+          defaultClassNames.range_end
+        ),
+        today: cn(
+          "rounded-(--cell-radius) bg-muted text-foreground data-[selected=true]:rounded-none",
+          defaultClassNames.today
+        ),
+        outside: cn(
+          "text-muted-foreground aria-selected:text-muted-foreground",
+          defaultClassNames.outside
+        ),
+        disabled: cn(
+          "text-muted-foreground opacity-50",
+          defaultClassNames.disabled
+        ),
+        hidden: cn("invisible", defaultClassNames.hidden),
+        ...classNames,
+      }}
+      components={{
+        Root: ({ className, rootRef, ...props }) => {
+          return (
+            <div
+              data-slot="calendar"
+              ref={rootRef}
+              className={cn(className)}
+              {...props}
+            />
+          )
+        },
+        Chevron: ({ className, orientation, ...props }) => {
+          if (orientation === "left") {
+            return (
+              <ChevronLeftIcon className={cn("size-4", className)} {...props} />
+            )
+          }
+
+          if (orientation === "right") {
+            return (
+              <ChevronRightIcon className={cn("size-4", className)} {...props} />
+            )
+          }
+
+          return (
+            <ChevronDownIcon className={cn("size-4", className)} {...props} />
+          )
+        },
+        DayButton: ({ ...props }) => (
+          <CalendarDayButton locale={locale} {...props} />
+        ),
+        WeekNumber: ({ children, ...props }) => {
+          return (
+            <td {...props}>
+              <div className="flex size-(--cell-size) items-center justify-center text-center">
+                {children}
+              </div>
+            </td>
+          )
+        },
+        ...components,
+      }}
+      {...props}
+    />
+  )
+}
+
+function CalendarDayButton({
+  className,
+  day,
+  modifiers,
+  locale,
+  ...props
+}: React.ComponentProps<typeof DayButton> & { locale?: Partial<Locale> }) {
+  const defaultClassNames = getDefaultClassNames()
+
+  const ref = React.useRef<HTMLButtonElement>(null)
+  React.useEffect(() => {
+    if (modifiers.focused) ref.current?.focus()
+  }, [modifiers.focused])
+
+  return (
+    <Button
+      variant="ghost"
+      size="icon"
+      data-day={day.date.toLocaleDateString(locale?.code)}
+      data-selected-single={
+        modifiers.selected &&
+        !modifiers.range_start &&
+        !modifiers.range_end &&
+        !modifiers.range_middle
+      }
+      data-range-start={modifiers.range_start}
+      data-range-end={modifiers.range_end}
+      data-range-middle={modifiers.range_middle}
+      className={cn(
+        "relative isolate z-10 flex aspect-square size-auto w-full min-w-(--cell-size) flex-col gap-1 border-0 leading-none font-normal group-data-[focused=true]/day:relative group-data-[focused=true]/day:z-10 group-data-[focused=true]/day:border-ring group-data-[focused=true]/day:ring-[3px] group-data-[focused=true]/day:ring-ring/50 data-[range-end=true]:rounded-(--cell-radius) data-[range-end=true]:rounded-r-(--cell-radius) data-[range-end=true]:bg-primary data-[range-end=true]:text-primary-foreground data-[range-middle=true]:rounded-none data-[range-middle=true]:bg-muted data-[range-middle=true]:text-foreground data-[range-start=true]:rounded-(--cell-radius) data-[range-start=true]:rounded-l-(--cell-radius) data-[range-start=true]:bg-primary data-[range-start=true]:text-primary-foreground data-[selected-single=true]:bg-primary data-[selected-single=true]:text-primary-foreground dark:hover:text-foreground [&>span]:text-xs [&>span]:opacity-70",
+        defaultClassNames.day,
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Calendar, CalendarDayButton }

frontend/src/components/ui/collapsible.tsx

@@ -0,0 +1,19 @@
+import { Collapsible as CollapsiblePrimitive } from "@base-ui/react/collapsible"
+
+function Collapsible({ ...props }: CollapsiblePrimitive.Root.Props) {
+  return <CollapsiblePrimitive.Root data-slot="collapsible" {...props} />
+}
+
+function CollapsibleTrigger({ ...props }: CollapsiblePrimitive.Trigger.Props) {
+  return (
+    <CollapsiblePrimitive.Trigger data-slot="collapsible-trigger" {...props} />
+  )
+}
+
+function CollapsibleContent({ ...props }: CollapsiblePrimitive.Panel.Props) {
+  return (
+    <CollapsiblePrimitive.Panel data-slot="collapsible-content" {...props} />
+  )
+}
+
+export { Collapsible, CollapsibleTrigger, CollapsibleContent }

frontend/src/components/ui/command.tsx

@@ -0,0 +1,194 @@
+import * as React from "react"
+import { Command as CommandPrimitive } from "cmdk"
+
+import { cn } from "@/lib/utils"
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog"
+import {
+  InputGroup,
+  InputGroupAddon,
+} from "@/components/ui/input-group"
+import { SearchIcon, CheckIcon } from "lucide-react"
+
+function Command({
+  className,
+  ...props
+}: React.ComponentProps<typeof CommandPrimitive>) {
+  return (
+    <CommandPrimitive
+      data-slot="command"
+      className={cn(
+        "flex size-full flex-col overflow-hidden rounded-xl! bg-popover p-1 text-popover-foreground",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CommandDialog({
+  title = "Command Palette",
+  description = "Search for a command to run...",
+  children,
+  className,
+  showCloseButton = false,
+  ...props
+}: Omit<React.ComponentProps<typeof Dialog>, "children"> & {
+  title?: string
+  description?: string
+  className?: string
+  showCloseButton?: boolean
+  children: React.ReactNode
+}) {
+  return (
+    <Dialog {...props}>
+      <DialogHeader className="sr-only">
+        <DialogTitle>{title}</DialogTitle>
+        <DialogDescription>{description}</DialogDescription>
+      </DialogHeader>
+      <DialogContent
+        className={cn(
+          "top-1/3 translate-y-0 overflow-hidden rounded-xl! p-0",
+          className
+        )}
+        showCloseButton={showCloseButton}
+      >
+        {children}
+      </DialogContent>
+    </Dialog>
+  )
+}
+
+function CommandInput({
+  className,
+  ...props
+}: React.ComponentProps<typeof CommandPrimitive.Input>) {
+  return (
+    <div data-slot="command-input-wrapper" className="p-1 pb-0">
+      <InputGroup className="h-8! rounded-lg! border-input/30 bg-input/30 shadow-none! *:data-[slot=input-group-addon]:pl-2!">
+        <CommandPrimitive.Input
+          data-slot="command-input"
+          className={cn(
+            "w-full text-sm outline-hidden disabled:cursor-not-allowed disabled:opacity-50",
+            className
+          )}
+          {...props}
+        />
+        <InputGroupAddon>
+          <SearchIcon className="size-4 shrink-0 opacity-50" />
+        </InputGroupAddon>
+      </InputGroup>
+    </div>
+  )
+}
+
+function CommandList({
+  className,
+  ...props
+}: React.ComponentProps<typeof CommandPrimitive.List>) {
+  return (
+    <CommandPrimitive.List
+      data-slot="command-list"
+      className={cn(
+        "no-scrollbar max-h-72 scroll-py-1 overflow-x-hidden overflow-y-auto outline-none",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CommandEmpty({
+  className,
+  ...props
+}: React.ComponentProps<typeof CommandPrimitive.Empty>) {
+  return (
+    <CommandPrimitive.Empty
+      data-slot="command-empty"
+      className={cn("py-6 text-center text-sm", className)}
+      {...props}
+    />
+  )
+}
+
+function CommandGroup({
+  className,
+  ...props
+}: React.ComponentProps<typeof CommandPrimitive.Group>) {
+  return (
+    <CommandPrimitive.Group
+      data-slot="command-group"
+      className={cn(
+        "overflow-hidden p-1 text-foreground **:[[cmdk-group-heading]]:px-2 **:[[cmdk-group-heading]]:py-1.5 **:[[cmdk-group-heading]]:text-xs **:[[cmdk-group-heading]]:font-medium **:[[cmdk-group-heading]]:text-muted-foreground",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function CommandSeparator({
+  className,
+  ...props
+}: React.ComponentProps<typeof CommandPrimitive.Separator>) {
+  return (
+    <CommandPrimitive.Separator
+      data-slot="command-separator"
+      className={cn("-mx-1 h-px bg-border", className)}
+      {...props}
+    />
+  )
+}
+
+function CommandItem({
+  className,
+  children,
+  ...props
+}: React.ComponentProps<typeof CommandPrimitive.Item>) {
+  return (
+    <CommandPrimitive.Item
+      data-slot="command-item"
+      className={cn(
+        "group/command-item relative flex cursor-default items-center gap-2 rounded-sm px-2 py-1.5 text-sm outline-hidden select-none in-data-[slot=dialog-content]:rounded-lg! data-[disabled=true]:pointer-events-none data-[disabled=true]:opacity-50 data-selected:bg-muted data-selected:text-foreground [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4 data-selected:*:[svg]:text-foreground",
+        className
+      )}
+      {...props}
+    >
+      {children}
+      <CheckIcon className="ml-auto opacity-0 group-has-data-[slot=command-shortcut]/command-item:hidden group-data-[checked=true]/command-item:opacity-100" />
+    </CommandPrimitive.Item>
+  )
+}
+
+function CommandShortcut({
+  className,
+  ...props
+}: React.ComponentProps<"span">) {
+  return (
+    <span
+      data-slot="command-shortcut"
+      className={cn(
+        "ml-auto text-xs tracking-widest text-muted-foreground group-data-selected/command-item:text-foreground",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export {
+  Command,
+  CommandDialog,
+  CommandInput,
+  CommandList,
+  CommandEmpty,
+  CommandGroup,
+  CommandItem,
+  CommandShortcut,
+  CommandSeparator,
+}

frontend/src/components/ui/empty.tsx

@@ -0,0 +1,104 @@
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+function Empty({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="empty"
+      className={cn(
+        "flex w-full min-w-0 flex-1 flex-col items-center justify-center gap-4 rounded-xl border-dashed p-6 text-center text-balance",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function EmptyHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="empty-header"
+      className={cn("flex max-w-sm flex-col items-center gap-2", className)}
+      {...props}
+    />
+  )
+}
+
+const emptyMediaVariants = cva(
+  "mb-2 flex shrink-0 items-center justify-center [&_svg]:pointer-events-none [&_svg]:shrink-0",
+  {
+    variants: {
+      variant: {
+        default: "bg-transparent",
+        icon: "flex size-8 shrink-0 items-center justify-center rounded-lg bg-muted text-foreground [&_svg:not([class*='size-'])]:size-4",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  }
+)
+
+function EmptyMedia({
+  className,
+  variant = "default",
+  ...props
+}: React.ComponentProps<"div"> & VariantProps<typeof emptyMediaVariants>) {
+  return (
+    <div
+      data-slot="empty-icon"
+      data-variant={variant}
+      className={cn(emptyMediaVariants({ variant, className }))}
+      {...props}
+    />
+  )
+}
+
+function EmptyTitle({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="empty-title"
+      className={cn(
+        "font-heading text-sm font-medium tracking-tight",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function EmptyDescription({ className, ...props }: React.ComponentProps<"p">) {
+  return (
+    <div
+      data-slot="empty-description"
+      className={cn(
+        "text-sm/relaxed text-muted-foreground [&>a]:underline [&>a]:underline-offset-4 [&>a:hover]:text-primary",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function EmptyContent({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="empty-content"
+      className={cn(
+        "flex w-full max-w-sm min-w-0 flex-col items-center gap-2.5 text-sm text-balance",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export {
+  Empty,
+  EmptyHeader,
+  EmptyTitle,
+  EmptyDescription,
+  EmptyContent,
+  EmptyMedia,
+}

frontend/src/components/ui/field.tsx

@@ -0,0 +1,236 @@
+import { useMemo } from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+import { Label } from "@/components/ui/label"
+import { Separator } from "@/components/ui/separator"
+
+function FieldSet({ className, ...props }: React.ComponentProps<"fieldset">) {
+  return (
+    <fieldset
+      data-slot="field-set"
+      className={cn(
+        "flex flex-col gap-4 has-[>[data-slot=checkbox-group]]:gap-3 has-[>[data-slot=radio-group]]:gap-3",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function FieldLegend({
+  className,
+  variant = "legend",
+  ...props
+}: React.ComponentProps<"legend"> & { variant?: "legend" | "label" }) {
+  return (
+    <legend
+      data-slot="field-legend"
+      data-variant={variant}
+      className={cn(
+        "mb-1.5 font-medium data-[variant=label]:text-sm data-[variant=legend]:text-base",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function FieldGroup({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="field-group"
+      className={cn(
+        "group/field-group @container/field-group flex w-full flex-col gap-5 data-[slot=checkbox-group]:gap-3 *:data-[slot=field-group]:gap-4",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+const fieldVariants = cva(
+  "group/field flex w-full gap-2 data-[invalid=true]:text-destructive",
+  {
+    variants: {
+      orientation: {
+        vertical: "flex-col *:w-full [&>.sr-only]:w-auto",
+        horizontal:
+          "flex-row items-center has-[>[data-slot=field-content]]:items-start *:data-[slot=field-label]:flex-auto has-[>[data-slot=field-content]]:[&>[role=checkbox],[role=radio]]:mt-px",
+        responsive:
+          "flex-col *:w-full @md/field-group:flex-row @md/field-group:items-center @md/field-group:*:w-auto @md/field-group:has-[>[data-slot=field-content]]:items-start @md/field-group:*:data-[slot=field-label]:flex-auto [&>.sr-only]:w-auto @md/field-group:has-[>[data-slot=field-content]]:[&>[role=checkbox],[role=radio]]:mt-px",
+      },
+    },
+    defaultVariants: {
+      orientation: "vertical",
+    },
+  }
+)
+
+function Field({
+  className,
+  orientation = "vertical",
+  ...props
+}: React.ComponentProps<"div"> & VariantProps<typeof fieldVariants>) {
+  return (
+    <div
+      role="group"
+      data-slot="field"
+      data-orientation={orientation}
+      className={cn(fieldVariants({ orientation }), className)}
+      {...props}
+    />
+  )
+}
+
+function FieldContent({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="field-content"
+      className={cn(
+        "group/field-content flex flex-1 flex-col gap-0.5 leading-snug",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function FieldLabel({
+  className,
+  ...props
+}: React.ComponentProps<typeof Label>) {
+  return (
+    <Label
+      data-slot="field-label"
+      className={cn(
+        "group/field-label peer/field-label flex w-fit gap-2 leading-snug group-data-[disabled=true]/field:opacity-50 has-data-checked:border-primary/30 has-data-checked:bg-primary/5 has-[>[data-slot=field]]:rounded-lg has-[>[data-slot=field]]:border *:data-[slot=field]:p-2.5 dark:has-data-checked:border-primary/20 dark:has-data-checked:bg-primary/10",
+        "has-[>[data-slot=field]]:w-full has-[>[data-slot=field]]:flex-col",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function FieldTitle({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="field-label"
+      className={cn(
+        "flex w-fit items-center gap-2 text-sm font-medium group-data-[disabled=true]/field:opacity-50",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function FieldDescription({ className, ...props }: React.ComponentProps<"p">) {
+  return (
+    <p
+      data-slot="field-description"
+      className={cn(
+        "text-left text-sm leading-normal font-normal text-muted-foreground group-has-data-horizontal/field:text-balance [[data-variant=legend]+&]:-mt-1.5",
+        "last:mt-0 nth-last-2:-mt-1",
+        "[&>a]:underline [&>a]:underline-offset-4 [&>a:hover]:text-primary",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function FieldSeparator({
+  children,
+  className,
+  ...props
+}: React.ComponentProps<"div"> & {
+  children?: React.ReactNode
+}) {
+  return (
+    <div
+      data-slot="field-separator"
+      data-content={!!children}
+      className={cn(
+        "relative -my-2 h-5 text-sm group-data-[variant=outline]/field-group:-mb-2",
+        className
+      )}
+      {...props}
+    >
+      <Separator className="absolute inset-0 top-1/2" />
+      {children && (
+        <span
+          className="relative mx-auto block w-fit bg-background px-2 text-muted-foreground"
+          data-slot="field-separator-content"
+        >
+          {children}
+        </span>
+      )}
+    </div>
+  )
+}
+
+function FieldError({
+  className,
+  children,
+  errors,
+  ...props
+}: React.ComponentProps<"div"> & {
+  errors?: Array<{ message?: string } | undefined>
+}) {
+  const content = useMemo(() => {
+    if (children) {
+      return children
+    }
+
+    if (!errors?.length) {
+      return null
+    }
+
+    const uniqueErrors = [
+      ...new Map(errors.map((error) => [error?.message, error])).values(),
+    ]
+
+    if (uniqueErrors?.length == 1) {
+      return uniqueErrors[0]?.message
+    }
+
+    return (
+      <ul className="ml-4 flex list-disc flex-col gap-1">
+        {uniqueErrors.map(
+          (error, index) =>
+            error?.message && <li key={index}>{error.message}</li>
+        )}
+      </ul>
+    )
+  }, [children, errors])
+
+  if (!content) {
+    return null
+  }
+
+  return (
+    <div
+      role="alert"
+      data-slot="field-error"
+      className={cn("text-sm font-normal text-destructive", className)}
+      {...props}
+    >
+      {content}
+    </div>
+  )
+}
+
+export {
+  Field,
+  FieldLabel,
+  FieldDescription,
+  FieldError,
+  FieldGroup,
+  FieldLegend,
+  FieldSeparator,
+  FieldSet,
+  FieldContent,
+  FieldTitle,
+}

frontend/src/components/ui/hover-card.tsx

@@ -0,0 +1,49 @@
+import { PreviewCard as PreviewCardPrimitive } from "@base-ui/react/preview-card"
+
+import { cn } from "@/lib/utils"
+
+function HoverCard({ ...props }: PreviewCardPrimitive.Root.Props) {
+  return <PreviewCardPrimitive.Root data-slot="hover-card" {...props} />
+}
+
+function HoverCardTrigger({ ...props }: PreviewCardPrimitive.Trigger.Props) {
+  return (
+    <PreviewCardPrimitive.Trigger data-slot="hover-card-trigger" {...props} />
+  )
+}
+
+function HoverCardContent({
+  className,
+  side = "bottom",
+  sideOffset = 4,
+  align = "center",
+  alignOffset = 4,
+  ...props
+}: PreviewCardPrimitive.Popup.Props &
+  Pick<
+    PreviewCardPrimitive.Positioner.Props,
+    "align" | "alignOffset" | "side" | "sideOffset"
+  >) {
+  return (
+    <PreviewCardPrimitive.Portal data-slot="hover-card-portal">
+      <PreviewCardPrimitive.Positioner
+        align={align}
+        alignOffset={alignOffset}
+        side={side}
+        sideOffset={sideOffset}
+        className="isolate z-50"
+      >
+        <PreviewCardPrimitive.Popup
+          data-slot="hover-card-content"
+          className={cn(
+            "z-50 w-64 origin-(--transform-origin) rounded-lg bg-popover p-2.5 text-sm text-popover-foreground shadow-md ring-1 ring-foreground/10 outline-hidden duration-100 data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95",
+            className
+          )}
+          {...props}
+        />
+      </PreviewCardPrimitive.Positioner>
+    </PreviewCardPrimitive.Portal>
+  )
+}
+
+export { HoverCard, HoverCardTrigger, HoverCardContent }

frontend/src/components/ui/input-group.tsx

@@ -0,0 +1,156 @@
+import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+import { Button } from "@/components/ui/button"
+import { Input } from "@/components/ui/input"
+import { Textarea } from "@/components/ui/textarea"
+
+function InputGroup({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="input-group"
+      role="group"
+      className={cn(
+        "group/input-group relative flex h-8 w-full min-w-0 items-center rounded-lg border border-input transition-colors outline-none in-data-[slot=combobox-content]:focus-within:border-inherit in-data-[slot=combobox-content]:focus-within:ring-0 has-disabled:bg-input/50 has-disabled:opacity-50 has-[[data-slot=input-group-control]:focus-visible]:border-ring has-[[data-slot=input-group-control]:focus-visible]:ring-3 has-[[data-slot=input-group-control]:focus-visible]:ring-ring/50 has-[[data-slot][aria-invalid=true]]:border-destructive has-[[data-slot][aria-invalid=true]]:ring-3 has-[[data-slot][aria-invalid=true]]:ring-destructive/20 has-[>[data-align=block-end]]:h-auto has-[>[data-align=block-end]]:flex-col has-[>[data-align=block-start]]:h-auto has-[>[data-align=block-start]]:flex-col has-[>textarea]:h-auto dark:bg-input/30 dark:has-disabled:bg-input/80 dark:has-[[data-slot][aria-invalid=true]]:ring-destructive/40 has-[>[data-align=block-end]]:[&>input]:pt-3 has-[>[data-align=block-start]]:[&>input]:pb-3 has-[>[data-align=inline-end]]:[&>input]:pr-1.5 has-[>[data-align=inline-start]]:[&>input]:pl-1.5",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+const inputGroupAddonVariants = cva(
+  "flex h-auto cursor-text items-center justify-center gap-2 py-1.5 text-sm font-medium text-muted-foreground select-none group-data-[disabled=true]/input-group:opacity-50 [&>kbd]:rounded-[calc(var(--radius)-5px)] [&>svg:not([class*='size-'])]:size-4",
+  {
+    variants: {
+      align: {
+        "inline-start":
+          "order-first pl-2 has-[>button]:ml-[-0.3rem] has-[>kbd]:ml-[-0.15rem]",
+        "inline-end":
+          "order-last pr-2 has-[>button]:mr-[-0.3rem] has-[>kbd]:mr-[-0.15rem]",
+        "block-start":
+          "order-first w-full justify-start px-2.5 pt-2 group-has-[>input]/input-group:pt-2 [.border-b]:pb-2",
+        "block-end":
+          "order-last w-full justify-start px-2.5 pb-2 group-has-[>input]/input-group:pb-2 [.border-t]:pt-2",
+      },
+    },
+    defaultVariants: {
+      align: "inline-start",
+    },
+  }
+)
+
+function InputGroupAddon({
+  className,
+  align = "inline-start",
+  ...props
+}: React.ComponentProps<"div"> & VariantProps<typeof inputGroupAddonVariants>) {
+  return (
+    <div
+      role="group"
+      data-slot="input-group-addon"
+      data-align={align}
+      className={cn(inputGroupAddonVariants({ align }), className)}
+      onClick={(e) => {
+        if ((e.target as HTMLElement).closest("button")) {
+          return
+        }
+        e.currentTarget.parentElement?.querySelector("input")?.focus()
+      }}
+      {...props}
+    />
+  )
+}
+
+const inputGroupButtonVariants = cva(
+  "flex items-center gap-2 text-sm shadow-none",
+  {
+    variants: {
+      size: {
+        xs: "h-6 gap-1 rounded-[calc(var(--radius)-3px)] px-1.5 [&>svg:not([class*='size-'])]:size-3.5",
+        sm: "",
+        "icon-xs":
+          "size-6 rounded-[calc(var(--radius)-3px)] p-0 has-[>svg]:p-0",
+        "icon-sm": "size-8 p-0 has-[>svg]:p-0",
+      },
+    },
+    defaultVariants: {
+      size: "xs",
+    },
+  }
+)
+
+function InputGroupButton({
+  className,
+  type = "button",
+  variant = "ghost",
+  size = "xs",
+  ...props
+}: Omit<React.ComponentProps<typeof Button>, "size" | "type"> &
+  VariantProps<typeof inputGroupButtonVariants> & {
+    type?: "button" | "submit" | "reset"
+  }) {
+  return (
+    <Button
+      type={type}
+      data-size={size}
+      variant={variant}
+      className={cn(inputGroupButtonVariants({ size }), className)}
+      {...props}
+    />
+  )
+}
+
+function InputGroupText({ className, ...props }: React.ComponentProps<"span">) {
+  return (
+    <span
+      className={cn(
+        "flex items-center gap-2 text-sm text-muted-foreground [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function InputGroupInput({
+  className,
+  ...props
+}: React.ComponentProps<"input">) {
+  return (
+    <Input
+      data-slot="input-group-control"
+      className={cn(
+        "flex-1 rounded-none border-0 bg-transparent shadow-none ring-0 focus-visible:ring-0 disabled:bg-transparent aria-invalid:ring-0 dark:bg-transparent dark:disabled:bg-transparent",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function InputGroupTextarea({
+  className,
+  ...props
+}: React.ComponentProps<"textarea">) {
+  return (
+    <Textarea
+      data-slot="input-group-control"
+      className={cn(
+        "flex-1 resize-none rounded-none border-0 bg-transparent py-2 shadow-none ring-0 focus-visible:ring-0 disabled:bg-transparent aria-invalid:ring-0 dark:bg-transparent dark:disabled:bg-transparent",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export {
+  InputGroup,
+  InputGroupAddon,
+  InputGroupButton,
+  InputGroupText,
+  InputGroupInput,
+  InputGroupTextarea,
+}

frontend/src/components/ui/item.tsx

@@ -0,0 +1,201 @@
+import * as React from "react"
+import { mergeProps } from "@base-ui/react/merge-props"
+import { useRender } from "@base-ui/react/use-render"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+import { Separator } from "@/components/ui/separator"
+
+function ItemGroup({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      role="list"
+      data-slot="item-group"
+      className={cn(
+        "group/item-group flex w-full flex-col gap-4 has-data-[size=sm]:gap-2.5 has-data-[size=xs]:gap-2",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function ItemSeparator({
+  className,
+  ...props
+}: React.ComponentProps<typeof Separator>) {
+  return (
+    <Separator
+      data-slot="item-separator"
+      orientation="horizontal"
+      className={cn("my-2", className)}
+      {...props}
+    />
+  )
+}
+
+const itemVariants = cva(
+  "group/item flex w-full flex-wrap items-center rounded-lg border text-sm transition-colors duration-100 outline-none focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 [a]:transition-colors [a]:hover:bg-muted",
+  {
+    variants: {
+      variant: {
+        default: "border-transparent",
+        outline: "border-border",
+        muted: "border-transparent bg-muted/50",
+      },
+      size: {
+        default: "gap-2.5 px-3 py-2.5",
+        sm: "gap-2.5 px-3 py-2.5",
+        xs: "gap-2 px-2.5 py-2 in-data-[slot=dropdown-menu-content]:p-0",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+function Item({
+  className,
+  variant = "default",
+  size = "default",
+  render,
+  ...props
+}: useRender.ComponentProps<"div"> & VariantProps<typeof itemVariants>) {
+  return useRender({
+    defaultTagName: "div",
+    props: mergeProps<"div">(
+      {
+        className: cn(itemVariants({ variant, size, className })),
+      },
+      props
+    ),
+    render,
+    state: {
+      slot: "item",
+      variant,
+      size,
+    },
+  })
+}
+
+const itemMediaVariants = cva(
+  "flex shrink-0 items-center justify-center gap-2 group-has-data-[slot=item-description]/item:translate-y-0.5 group-has-data-[slot=item-description]/item:self-start [&_svg]:pointer-events-none",
+  {
+    variants: {
+      variant: {
+        default: "bg-transparent",
+        icon: "[&_svg:not([class*='size-'])]:size-4",
+        image:
+          "size-10 overflow-hidden rounded-sm group-data-[size=sm]/item:size-8 group-data-[size=xs]/item:size-6 [&_img]:size-full [&_img]:object-cover",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  }
+)
+
+function ItemMedia({
+  className,
+  variant = "default",
+  ...props
+}: React.ComponentProps<"div"> & VariantProps<typeof itemMediaVariants>) {
+  return (
+    <div
+      data-slot="item-media"
+      data-variant={variant}
+      className={cn(itemMediaVariants({ variant, className }))}
+      {...props}
+    />
+  )
+}
+
+function ItemContent({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="item-content"
+      className={cn(
+        "flex flex-1 flex-col gap-1 group-data-[size=xs]/item:gap-0 [&+[data-slot=item-content]]:flex-none",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function ItemTitle({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="item-title"
+      className={cn(
+        "line-clamp-1 flex w-fit items-center gap-2 text-sm leading-snug font-medium underline-offset-4",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function ItemDescription({ className, ...props }: React.ComponentProps<"p">) {
+  return (
+    <p
+      data-slot="item-description"
+      className={cn(
+        "line-clamp-2 text-left text-sm leading-normal font-normal text-muted-foreground group-data-[size=xs]/item:text-xs [&>a]:underline [&>a]:underline-offset-4 [&>a:hover]:text-primary",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function ItemActions({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="item-actions"
+      className={cn("flex items-center gap-2", className)}
+      {...props}
+    />
+  )
+}
+
+function ItemHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="item-header"
+      className={cn(
+        "flex basis-full items-center justify-between gap-2",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function ItemFooter({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="item-footer"
+      className={cn(
+        "flex basis-full items-center justify-between gap-2",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export {
+  Item,
+  ItemMedia,
+  ItemContent,
+  ItemActions,
+  ItemGroup,
+  ItemSeparator,
+  ItemTitle,
+  ItemDescription,
+  ItemHeader,
+  ItemFooter,
+}

frontend/src/components/ui/kbd.tsx

@@ -0,0 +1,26 @@
+import { cn } from "@/lib/utils"
+
+function Kbd({ className, ...props }: React.ComponentProps<"kbd">) {
+  return (
+    <kbd
+      data-slot="kbd"
+      className={cn(
+        "pointer-events-none inline-flex h-5 w-fit min-w-5 items-center justify-center gap-1 rounded-sm bg-muted px-1 font-sans text-xs font-medium text-muted-foreground select-none in-data-[slot=tooltip-content]:bg-background/20 in-data-[slot=tooltip-content]:text-background dark:in-data-[slot=tooltip-content]:bg-background/10 [&_svg:not([class*='size-'])]:size-3",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function KbdGroup({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <kbd
+      data-slot="kbd-group"
+      className={cn("inline-flex items-center gap-1", className)}
+      {...props}
+    />
+  )
+}
+
+export { Kbd, KbdGroup }

frontend/src/components/ui/popover.tsx

@@ -0,0 +1,90 @@
+"use client"
+
+import * as React from "react"
+import { Popover as PopoverPrimitive } from "@base-ui/react/popover"
+
+import { cn } from "@/lib/utils"
+
+function Popover({ ...props }: PopoverPrimitive.Root.Props) {
+  return <PopoverPrimitive.Root data-slot="popover" {...props} />
+}
+
+function PopoverTrigger({ ...props }: PopoverPrimitive.Trigger.Props) {
+  return <PopoverPrimitive.Trigger data-slot="popover-trigger" {...props} />
+}
+
+function PopoverContent({
+  className,
+  align = "center",
+  alignOffset = 0,
+  side = "bottom",
+  sideOffset = 4,
+  ...props
+}: PopoverPrimitive.Popup.Props &
+  Pick<
+    PopoverPrimitive.Positioner.Props,
+    "align" | "alignOffset" | "side" | "sideOffset"
+  >) {
+  return (
+    <PopoverPrimitive.Portal>
+      <PopoverPrimitive.Positioner
+        align={align}
+        alignOffset={alignOffset}
+        side={side}
+        sideOffset={sideOffset}
+        className="isolate z-50"
+      >
+        <PopoverPrimitive.Popup
+          data-slot="popover-content"
+          className={cn(
+            "z-50 flex w-72 origin-(--transform-origin) flex-col gap-2.5 rounded-lg bg-popover p-2.5 text-sm text-popover-foreground shadow-md ring-1 ring-foreground/10 outline-hidden duration-100 data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95",
+            className
+          )}
+          {...props}
+        />
+      </PopoverPrimitive.Positioner>
+    </PopoverPrimitive.Portal>
+  )
+}
+
+function PopoverHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="popover-header"
+      className={cn("flex flex-col gap-0.5 text-sm", className)}
+      {...props}
+    />
+  )
+}
+
+function PopoverTitle({ className, ...props }: PopoverPrimitive.Title.Props) {
+  return (
+    <PopoverPrimitive.Title
+      data-slot="popover-title"
+      className={cn("font-medium", className)}
+      {...props}
+    />
+  )
+}
+
+function PopoverDescription({
+  className,
+  ...props
+}: PopoverPrimitive.Description.Props) {
+  return (
+    <PopoverPrimitive.Description
+      data-slot="popover-description"
+      className={cn("text-muted-foreground", className)}
+      {...props}
+    />
+  )
+}
+
+export {
+  Popover,
+  PopoverContent,
+  PopoverDescription,
+  PopoverHeader,
+  PopoverTitle,
+  PopoverTrigger,
+}

frontend/src/components/ui/progress.tsx

@@ -0,0 +1,81 @@
+import { Progress as ProgressPrimitive } from "@base-ui/react/progress"
+
+import { cn } from "@/lib/utils"
+
+function Progress({
+  className,
+  children,
+  value,
+  ...props
+}: ProgressPrimitive.Root.Props) {
+  return (
+    <ProgressPrimitive.Root
+      value={value}
+      data-slot="progress"
+      className={cn("flex flex-wrap gap-3", className)}
+      {...props}
+    >
+      {children}
+      <ProgressTrack>
+        <ProgressIndicator />
+      </ProgressTrack>
+    </ProgressPrimitive.Root>
+  )
+}
+
+function ProgressTrack({ className, ...props }: ProgressPrimitive.Track.Props) {
+  return (
+    <ProgressPrimitive.Track
+      className={cn(
+        "relative flex h-1 w-full items-center overflow-x-hidden rounded-full bg-muted",
+        className
+      )}
+      data-slot="progress-track"
+      {...props}
+    />
+  )
+}
+
+function ProgressIndicator({
+  className,
+  ...props
+}: ProgressPrimitive.Indicator.Props) {
+  return (
+    <ProgressPrimitive.Indicator
+      data-slot="progress-indicator"
+      className={cn("h-full bg-primary transition-all", className)}
+      {...props}
+    />
+  )
+}
+
+function ProgressLabel({ className, ...props }: ProgressPrimitive.Label.Props) {
+  return (
+    <ProgressPrimitive.Label
+      className={cn("text-sm font-medium", className)}
+      data-slot="progress-label"
+      {...props}
+    />
+  )
+}
+
+function ProgressValue({ className, ...props }: ProgressPrimitive.Value.Props) {
+  return (
+    <ProgressPrimitive.Value
+      className={cn(
+        "ml-auto text-sm text-muted-foreground tabular-nums",
+        className
+      )}
+      data-slot="progress-value"
+      {...props}
+    />
+  )
+}
+
+export {
+  Progress,
+  ProgressTrack,
+  ProgressIndicator,
+  ProgressLabel,
+  ProgressValue,
+}

frontend/src/components/ui/sidebar.tsx

@@ -0,0 +1,723 @@
+"use client"
+
+import * as React from "react"
+import { mergeProps } from "@base-ui/react/merge-props"
+import { useRender } from "@base-ui/react/use-render"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { useIsMobile } from "@/hooks/use-mobile"
+import { cn } from "@/lib/utils"
+import { Button } from "@/components/ui/button"
+import { Input } from "@/components/ui/input"
+import { Separator } from "@/components/ui/separator"
+import {
+  Sheet,
+  SheetContent,
+  SheetDescription,
+  SheetHeader,
+  SheetTitle,
+} from "@/components/ui/sheet"
+import { Skeleton } from "@/components/ui/skeleton"
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@/components/ui/tooltip"
+import { PanelLeftIcon } from "lucide-react"
+
+const SIDEBAR_COOKIE_NAME = "sidebar_state"
+const SIDEBAR_COOKIE_MAX_AGE = 60 * 60 * 24 * 7
+const SIDEBAR_WIDTH = "16rem"
+const SIDEBAR_WIDTH_MOBILE = "18rem"
+const SIDEBAR_WIDTH_ICON = "3rem"
+const SIDEBAR_KEYBOARD_SHORTCUT = "b"
+
+type SidebarContextProps = {
+  state: "expanded" | "collapsed"
+  open: boolean
+  setOpen: (open: boolean) => void
+  openMobile: boolean
+  setOpenMobile: (open: boolean) => void
+  isMobile: boolean
+  toggleSidebar: () => void
+}
+
+const SidebarContext = React.createContext<SidebarContextProps | null>(null)
+
+function useSidebar() {
+  const context = React.useContext(SidebarContext)
+  if (!context) {
+    throw new Error("useSidebar must be used within a SidebarProvider.")
+  }
+
+  return context
+}
+
+function SidebarProvider({
+  defaultOpen = true,
+  open: openProp,
+  onOpenChange: setOpenProp,
+  className,
+  style,
+  children,
+  ...props
+}: React.ComponentProps<"div"> & {
+  defaultOpen?: boolean
+  open?: boolean
+  onOpenChange?: (open: boolean) => void
+}) {
+  const isMobile = useIsMobile()
+  const [openMobile, setOpenMobile] = React.useState(false)
+
+  // This is the internal state of the sidebar.
+  // We use openProp and setOpenProp for control from outside the component.
+  const [_open, _setOpen] = React.useState(defaultOpen)
+  const open = openProp ?? _open
+  const setOpen = React.useCallback(
+    (value: boolean | ((value: boolean) => boolean)) => {
+      const openState = typeof value === "function" ? value(open) : value
+      if (setOpenProp) {
+        setOpenProp(openState)
+      } else {
+        _setOpen(openState)
+      }
+
+      // This sets the cookie to keep the sidebar state.
+      document.cookie = `${SIDEBAR_COOKIE_NAME}=${openState}; path=/; max-age=${SIDEBAR_COOKIE_MAX_AGE}`
+    },
+    [setOpenProp, open]
+  )
+
+  // Helper to toggle the sidebar.
+  const toggleSidebar = React.useCallback(() => {
+    return isMobile ? setOpenMobile((open) => !open) : setOpen((open) => !open)
+  }, [isMobile, setOpen, setOpenMobile])
+
+  // Adds a keyboard shortcut to toggle the sidebar.
+  React.useEffect(() => {
+    const handleKeyDown = (event: KeyboardEvent) => {
+      if (
+        event.key === SIDEBAR_KEYBOARD_SHORTCUT &&
+        (event.metaKey || event.ctrlKey)
+      ) {
+        event.preventDefault()
+        toggleSidebar()
+      }
+    }
+
+    window.addEventListener("keydown", handleKeyDown)
+    return () => window.removeEventListener("keydown", handleKeyDown)
+  }, [toggleSidebar])
+
+  // We add a state so that we can do data-state="expanded" or "collapsed".
+  // This makes it easier to style the sidebar with Tailwind classes.
+  const state = open ? "expanded" : "collapsed"
+
+  const contextValue = React.useMemo<SidebarContextProps>(
+    () => ({
+      state,
+      open,
+      setOpen,
+      isMobile,
+      openMobile,
+      setOpenMobile,
+      toggleSidebar,
+    }),
+    [state, open, setOpen, isMobile, openMobile, setOpenMobile, toggleSidebar]
+  )
+
+  return (
+    <SidebarContext.Provider value={contextValue}>
+      <div
+        data-slot="sidebar-wrapper"
+        style={
+          {
+            "--sidebar-width": SIDEBAR_WIDTH,
+            "--sidebar-width-icon": SIDEBAR_WIDTH_ICON,
+            ...style,
+          } as React.CSSProperties
+        }
+        className={cn(
+          "group/sidebar-wrapper flex min-h-svh w-full has-data-[variant=inset]:bg-sidebar",
+          className
+        )}
+        {...props}
+      >
+        {children}
+      </div>
+    </SidebarContext.Provider>
+  )
+}
+
+function Sidebar({
+  side = "left",
+  variant = "sidebar",
+  collapsible = "offcanvas",
+  className,
+  children,
+  dir,
+  ...props
+}: React.ComponentProps<"div"> & {
+  side?: "left" | "right"
+  variant?: "sidebar" | "floating" | "inset"
+  collapsible?: "offcanvas" | "icon" | "none"
+}) {
+  const { isMobile, state, openMobile, setOpenMobile } = useSidebar()
+
+  if (collapsible === "none") {
+    return (
+      <div
+        data-slot="sidebar"
+        className={cn(
+          "flex h-full w-(--sidebar-width) flex-col bg-sidebar text-sidebar-foreground",
+          className
+        )}
+        {...props}
+      >
+        {children}
+      </div>
+    )
+  }
+
+  if (isMobile) {
+    return (
+      <Sheet open={openMobile} onOpenChange={setOpenMobile} {...props}>
+        <SheetContent
+          dir={dir}
+          data-sidebar="sidebar"
+          data-slot="sidebar"
+          data-mobile="true"
+          className="w-(--sidebar-width) bg-sidebar p-0 text-sidebar-foreground [&>button]:hidden"
+          style={
+            {
+              "--sidebar-width": SIDEBAR_WIDTH_MOBILE,
+            } as React.CSSProperties
+          }
+          side={side}
+        >
+          <SheetHeader className="sr-only">
+            <SheetTitle>Sidebar</SheetTitle>
+            <SheetDescription>Displays the mobile sidebar.</SheetDescription>
+          </SheetHeader>
+          <div className="flex h-full w-full flex-col">{children}</div>
+        </SheetContent>
+      </Sheet>
+    )
+  }
+
+  return (
+    <div
+      className="group peer hidden text-sidebar-foreground md:block"
+      data-state={state}
+      data-collapsible={state === "collapsed" ? collapsible : ""}
+      data-variant={variant}
+      data-side={side}
+      data-slot="sidebar"
+    >
+      {/* This is what handles the sidebar gap on desktop */}
+      <div
+        data-slot="sidebar-gap"
+        className={cn(
+          "relative w-(--sidebar-width) bg-transparent transition-[width] duration-200 ease-linear",
+          "group-data-[collapsible=offcanvas]:w-0",
+          "group-data-[side=right]:rotate-180",
+          variant === "floating" || variant === "inset"
+            ? "group-data-[collapsible=icon]:w-[calc(var(--sidebar-width-icon)+(--spacing(4)))]"
+            : "group-data-[collapsible=icon]:w-(--sidebar-width-icon)"
+        )}
+      />
+      <div
+        data-slot="sidebar-container"
+        data-side={side}
+        className={cn(
+          "fixed inset-y-0 z-10 hidden h-svh w-(--sidebar-width) transition-[left,right,width] duration-200 ease-linear data-[side=left]:left-0 data-[side=left]:group-data-[collapsible=offcanvas]:left-[calc(var(--sidebar-width)*-1)] data-[side=right]:right-0 data-[side=right]:group-data-[collapsible=offcanvas]:right-[calc(var(--sidebar-width)*-1)] md:flex",
+          // Adjust the padding for floating and inset variants.
+          variant === "floating" || variant === "inset"
+            ? "p-2 group-data-[collapsible=icon]:w-[calc(var(--sidebar-width-icon)+(--spacing(4))+2px)]"
+            : "group-data-[collapsible=icon]:w-(--sidebar-width-icon) group-data-[side=left]:border-r group-data-[side=right]:border-l",
+          className
+        )}
+        {...props}
+      >
+        <div
+          data-sidebar="sidebar"
+          data-slot="sidebar-inner"
+          className="flex size-full flex-col bg-sidebar group-data-[variant=floating]:rounded-lg group-data-[variant=floating]:shadow-sm group-data-[variant=floating]:ring-1 group-data-[variant=floating]:ring-sidebar-border"
+        >
+          {children}
+        </div>
+      </div>
+    </div>
+  )
+}
+
+function SidebarTrigger({
+  className,
+  onClick,
+  ...props
+}: React.ComponentProps<typeof Button>) {
+  const { toggleSidebar } = useSidebar()
+
+  return (
+    <Button
+      data-sidebar="trigger"
+      data-slot="sidebar-trigger"
+      variant="ghost"
+      size="icon-sm"
+      className={cn(className)}
+      onClick={(event) => {
+        onClick?.(event)
+        toggleSidebar()
+      }}
+      {...props}
+    >
+      <PanelLeftIcon />
+      <span className="sr-only">Toggle Sidebar</span>
+    </Button>
+  )
+}
+
+function SidebarRail({ className, ...props }: React.ComponentProps<"button">) {
+  const { toggleSidebar } = useSidebar()
+
+  return (
+    <button
+      data-sidebar="rail"
+      data-slot="sidebar-rail"
+      aria-label="Toggle Sidebar"
+      tabIndex={-1}
+      onClick={toggleSidebar}
+      title="Toggle Sidebar"
+      className={cn(
+        "absolute inset-y-0 z-20 hidden w-4 transition-all ease-linear group-data-[side=left]:-right-4 group-data-[side=right]:left-0 after:absolute after:inset-y-0 after:start-1/2 after:w-[2px] hover:after:bg-sidebar-border sm:flex ltr:-translate-x-1/2 rtl:-translate-x-1/2",
+        "in-data-[side=left]:cursor-w-resize in-data-[side=right]:cursor-e-resize",
+        "[[data-side=left][data-state=collapsed]_&]:cursor-e-resize [[data-side=right][data-state=collapsed]_&]:cursor-w-resize",
+        "group-data-[collapsible=offcanvas]:translate-x-0 group-data-[collapsible=offcanvas]:after:left-full hover:group-data-[collapsible=offcanvas]:bg-sidebar",
+        "[[data-side=left][data-collapsible=offcanvas]_&]:-right-2",
+        "[[data-side=right][data-collapsible=offcanvas]_&]:-left-2",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function SidebarInset({ className, ...props }: React.ComponentProps<"main">) {
+  return (
+    <main
+      data-slot="sidebar-inset"
+      className={cn(
+        "relative flex w-full flex-1 flex-col bg-background md:peer-data-[variant=inset]:m-2 md:peer-data-[variant=inset]:ml-0 md:peer-data-[variant=inset]:rounded-xl md:peer-data-[variant=inset]:shadow-sm md:peer-data-[variant=inset]:peer-data-[state=collapsed]:ml-2",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function SidebarInput({
+  className,
+  ...props
+}: React.ComponentProps<typeof Input>) {
+  return (
+    <Input
+      data-slot="sidebar-input"
+      data-sidebar="input"
+      className={cn("h-8 w-full bg-background shadow-none", className)}
+      {...props}
+    />
+  )
+}
+
+function SidebarHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="sidebar-header"
+      data-sidebar="header"
+      className={cn("flex flex-col gap-2 p-2", className)}
+      {...props}
+    />
+  )
+}
+
+function SidebarFooter({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="sidebar-footer"
+      data-sidebar="footer"
+      className={cn("flex flex-col gap-2 p-2", className)}
+      {...props}
+    />
+  )
+}
+
+function SidebarSeparator({
+  className,
+  ...props
+}: React.ComponentProps<typeof Separator>) {
+  return (
+    <Separator
+      data-slot="sidebar-separator"
+      data-sidebar="separator"
+      className={cn("mx-2 w-auto bg-sidebar-border", className)}
+      {...props}
+    />
+  )
+}
+
+function SidebarContent({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="sidebar-content"
+      data-sidebar="content"
+      className={cn(
+        "no-scrollbar flex min-h-0 flex-1 flex-col gap-0 overflow-auto group-data-[collapsible=icon]:overflow-hidden",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function SidebarGroup({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="sidebar-group"
+      data-sidebar="group"
+      className={cn("relative flex w-full min-w-0 flex-col p-2", className)}
+      {...props}
+    />
+  )
+}
+
+function SidebarGroupLabel({
+  className,
+  render,
+  ...props
+}: useRender.ComponentProps<"div"> & React.ComponentProps<"div">) {
+  return useRender({
+    defaultTagName: "div",
+    props: mergeProps<"div">(
+      {
+        className: cn(
+          "flex h-8 shrink-0 items-center rounded-md px-2 text-xs font-medium text-sidebar-foreground/70 ring-sidebar-ring outline-hidden transition-[margin,opacity] duration-200 ease-linear group-data-[collapsible=icon]:-mt-8 group-data-[collapsible=icon]:opacity-0 focus-visible:ring-2 [&>svg]:size-4 [&>svg]:shrink-0",
+          className
+        ),
+      },
+      props
+    ),
+    render,
+    state: {
+      slot: "sidebar-group-label",
+      sidebar: "group-label",
+    },
+  })
+}
+
+function SidebarGroupAction({
+  className,
+  render,
+  ...props
+}: useRender.ComponentProps<"button"> & React.ComponentProps<"button">) {
+  return useRender({
+    defaultTagName: "button",
+    props: mergeProps<"button">(
+      {
+        className: cn(
+          "absolute top-3.5 right-3 flex aspect-square w-5 items-center justify-center rounded-md p-0 text-sidebar-foreground ring-sidebar-ring outline-hidden transition-transform group-data-[collapsible=icon]:hidden after:absolute after:-inset-2 hover:bg-sidebar-accent hover:text-sidebar-accent-foreground focus-visible:ring-2 md:after:hidden [&>svg]:size-4 [&>svg]:shrink-0",
+          className
+        ),
+      },
+      props
+    ),
+    render,
+    state: {
+      slot: "sidebar-group-action",
+      sidebar: "group-action",
+    },
+  })
+}
+
+function SidebarGroupContent({
+  className,
+  ...props
+}: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="sidebar-group-content"
+      data-sidebar="group-content"
+      className={cn("w-full text-sm", className)}
+      {...props}
+    />
+  )
+}
+
+function SidebarMenu({ className, ...props }: React.ComponentProps<"ul">) {
+  return (
+    <ul
+      data-slot="sidebar-menu"
+      data-sidebar="menu"
+      className={cn("flex w-full min-w-0 flex-col gap-0", className)}
+      {...props}
+    />
+  )
+}
+
+function SidebarMenuItem({ className, ...props }: React.ComponentProps<"li">) {
+  return (
+    <li
+      data-slot="sidebar-menu-item"
+      data-sidebar="menu-item"
+      className={cn("group/menu-item relative", className)}
+      {...props}
+    />
+  )
+}
+
+const sidebarMenuButtonVariants = cva(
+  "peer/menu-button group/menu-button flex w-full items-center gap-2 overflow-hidden rounded-md p-2 text-left text-sm ring-sidebar-ring outline-hidden transition-[width,height,padding] group-has-data-[sidebar=menu-action]/menu-item:pr-8 group-data-[collapsible=icon]:size-8! group-data-[collapsible=icon]:p-2! hover:bg-sidebar-accent hover:text-sidebar-accent-foreground focus-visible:ring-2 active:bg-sidebar-accent active:text-sidebar-accent-foreground disabled:pointer-events-none disabled:opacity-50 aria-disabled:pointer-events-none aria-disabled:opacity-50 data-open:hover:bg-sidebar-accent data-open:hover:text-sidebar-accent-foreground data-active:bg-sidebar-accent data-active:font-medium data-active:text-sidebar-accent-foreground [&_svg]:size-4 [&_svg]:shrink-0 [&>span:last-child]:truncate",
+  {
+    variants: {
+      variant: {
+        default: "hover:bg-sidebar-accent hover:text-sidebar-accent-foreground",
+        outline:
+          "bg-background shadow-[0_0_0_1px_var(--sidebar-border)] hover:bg-sidebar-accent hover:text-sidebar-accent-foreground hover:shadow-[0_0_0_1px_var(--sidebar-accent)]",
+      },
+      size: {
+        default: "h-8 text-sm",
+        sm: "h-7 text-xs",
+        lg: "h-12 text-sm group-data-[collapsible=icon]:p-0!",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+function SidebarMenuButton({
+  render,
+  isActive = false,
+  variant = "default",
+  size = "default",
+  tooltip,
+  className,
+  ...props
+}: useRender.ComponentProps<"button"> &
+  React.ComponentProps<"button"> & {
+    isActive?: boolean
+    tooltip?: string | React.ComponentProps<typeof TooltipContent>
+  } & VariantProps<typeof sidebarMenuButtonVariants>) {
+  const { isMobile, state } = useSidebar()
+  const comp = useRender({
+    defaultTagName: "button",
+    props: mergeProps<"button">(
+      {
+        className: cn(sidebarMenuButtonVariants({ variant, size }), className),
+      },
+      props
+    ),
+    render: !tooltip ? render : <TooltipTrigger render={render} />,
+    state: {
+      slot: "sidebar-menu-button",
+      sidebar: "menu-button",
+      size,
+      active: isActive,
+    },
+  })
+
+  if (!tooltip) {
+    return comp
+  }
+
+  if (typeof tooltip === "string") {
+    tooltip = {
+      children: tooltip,
+    }
+  }
+
+  return (
+    <Tooltip>
+      {comp}
+      <TooltipContent
+        side="right"
+        align="center"
+        hidden={state !== "collapsed" || isMobile}
+        {...tooltip}
+      />
+    </Tooltip>
+  )
+}
+
+function SidebarMenuAction({
+  className,
+  render,
+  showOnHover = false,
+  ...props
+}: useRender.ComponentProps<"button"> &
+  React.ComponentProps<"button"> & {
+    showOnHover?: boolean
+  }) {
+  return useRender({
+    defaultTagName: "button",
+    props: mergeProps<"button">(
+      {
+        className: cn(
+          "absolute top-1.5 right-1 flex aspect-square w-5 items-center justify-center rounded-md p-0 text-sidebar-foreground ring-sidebar-ring outline-hidden transition-transform group-data-[collapsible=icon]:hidden peer-hover/menu-button:text-sidebar-accent-foreground peer-data-[size=default]/menu-button:top-1.5 peer-data-[size=lg]/menu-button:top-2.5 peer-data-[size=sm]/menu-button:top-1 after:absolute after:-inset-2 hover:bg-sidebar-accent hover:text-sidebar-accent-foreground focus-visible:ring-2 md:after:hidden [&>svg]:size-4 [&>svg]:shrink-0",
+          showOnHover &&
+            "group-focus-within/menu-item:opacity-100 group-hover/menu-item:opacity-100 peer-data-active/menu-button:text-sidebar-accent-foreground aria-expanded:opacity-100 md:opacity-0",
+          className
+        ),
+      },
+      props
+    ),
+    render,
+    state: {
+      slot: "sidebar-menu-action",
+      sidebar: "menu-action",
+    },
+  })
+}
+
+function SidebarMenuBadge({
+  className,
+  ...props
+}: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="sidebar-menu-badge"
+      data-sidebar="menu-badge"
+      className={cn(
+        "pointer-events-none absolute right-1 flex h-5 min-w-5 items-center justify-center rounded-md px-1 text-xs font-medium text-sidebar-foreground tabular-nums select-none group-data-[collapsible=icon]:hidden peer-hover/menu-button:text-sidebar-accent-foreground peer-data-[size=default]/menu-button:top-1.5 peer-data-[size=lg]/menu-button:top-2.5 peer-data-[size=sm]/menu-button:top-1 peer-data-active/menu-button:text-sidebar-accent-foreground",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function SidebarMenuSkeleton({
+  className,
+  showIcon = false,
+  ...props
+}: React.ComponentProps<"div"> & {
+  showIcon?: boolean
+}) {
+  // Random width between 50 to 90%.
+  const [width] = React.useState(() => {
+    return `${Math.floor(Math.random() * 40) + 50}%`
+  })
+
+  return (
+    <div
+      data-slot="sidebar-menu-skeleton"
+      data-sidebar="menu-skeleton"
+      className={cn("flex h-8 items-center gap-2 rounded-md px-2", className)}
+      {...props}
+    >
+      {showIcon && (
+        <Skeleton
+          className="size-4 rounded-md"
+          data-sidebar="menu-skeleton-icon"
+        />
+      )}
+      <Skeleton
+        className="h-4 max-w-(--skeleton-width) flex-1"
+        data-sidebar="menu-skeleton-text"
+        style={
+          {
+            "--skeleton-width": width,
+          } as React.CSSProperties
+        }
+      />
+    </div>
+  )
+}
+
+function SidebarMenuSub({ className, ...props }: React.ComponentProps<"ul">) {
+  return (
+    <ul
+      data-slot="sidebar-menu-sub"
+      data-sidebar="menu-sub"
+      className={cn(
+        "mx-3.5 flex min-w-0 translate-x-px flex-col gap-1 border-l border-sidebar-border px-2.5 py-0.5 group-data-[collapsible=icon]:hidden",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function SidebarMenuSubItem({
+  className,
+  ...props
+}: React.ComponentProps<"li">) {
+  return (
+    <li
+      data-slot="sidebar-menu-sub-item"
+      data-sidebar="menu-sub-item"
+      className={cn("group/menu-sub-item relative", className)}
+      {...props}
+    />
+  )
+}
+
+function SidebarMenuSubButton({
+  render,
+  size = "md",
+  isActive = false,
+  className,
+  ...props
+}: useRender.ComponentProps<"a"> &
+  React.ComponentProps<"a"> & {
+    size?: "sm" | "md"
+    isActive?: boolean
+  }) {
+  return useRender({
+    defaultTagName: "a",
+    props: mergeProps<"a">(
+      {
+        className: cn(
+          "flex h-7 min-w-0 -translate-x-px items-center gap-2 overflow-hidden rounded-md px-2 text-sidebar-foreground ring-sidebar-ring outline-hidden group-data-[collapsible=icon]:hidden hover:bg-sidebar-accent hover:text-sidebar-accent-foreground focus-visible:ring-2 active:bg-sidebar-accent active:text-sidebar-accent-foreground disabled:pointer-events-none disabled:opacity-50 aria-disabled:pointer-events-none aria-disabled:opacity-50 data-[size=md]:text-sm data-[size=sm]:text-xs data-active:bg-sidebar-accent data-active:text-sidebar-accent-foreground [&>span:last-child]:truncate [&>svg]:size-4 [&>svg]:shrink-0 [&>svg]:text-sidebar-accent-foreground",
+          className
+        ),
+      },
+      props
+    ),
+    render,
+    state: {
+      slot: "sidebar-menu-sub-button",
+      sidebar: "menu-sub-button",
+      size,
+      active: isActive,
+    },
+  })
+}
+
+export {
+  Sidebar,
+  SidebarContent,
+  SidebarFooter,
+  SidebarGroup,
+  SidebarGroupAction,
+  SidebarGroupContent,
+  SidebarGroupLabel,
+  SidebarHeader,
+  SidebarInput,
+  SidebarInset,
+  SidebarMenu,
+  SidebarMenuAction,
+  SidebarMenuBadge,
+  SidebarMenuButton,
+  SidebarMenuItem,
+  SidebarMenuSkeleton,
+  SidebarMenuSub,
+  SidebarMenuSubButton,
+  SidebarMenuSubItem,
+  SidebarProvider,
+  SidebarRail,
+  SidebarSeparator,
+  SidebarTrigger,
+  useSidebar,
+}

frontend/src/components/ui/spinner.tsx

@@ -0,0 +1,10 @@
+import { cn } from "@/lib/utils"
+import { Loader2Icon } from "lucide-react"
+
+function Spinner({ className, ...props }: React.ComponentProps<"svg">) {
+  return (
+    <Loader2Icon data-slot="spinner" role="status" aria-label="Loading" className={cn("size-4 animate-spin", className)} {...props} />
+  )
+}
+
+export { Spinner }

frontend/src/components/ui/toggle-group.tsx

@@ -0,0 +1,89 @@
+"use client"
+
+import * as React from "react"
+import { Toggle as TogglePrimitive } from "@base-ui/react/toggle"
+import { ToggleGroup as ToggleGroupPrimitive } from "@base-ui/react/toggle-group"
+import { type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+import { toggleVariants } from "@/components/ui/toggle"
+
+const ToggleGroupContext = React.createContext<
+  VariantProps<typeof toggleVariants> & {
+    spacing?: number
+    orientation?: "horizontal" | "vertical"
+  }
+>({
+  size: "default",
+  variant: "default",
+  spacing: 2,
+  orientation: "horizontal",
+})
+
+function ToggleGroup({
+  className,
+  variant,
+  size,
+  spacing = 2,
+  orientation = "horizontal",
+  children,
+  ...props
+}: ToggleGroupPrimitive.Props &
+  VariantProps<typeof toggleVariants> & {
+    spacing?: number
+    orientation?: "horizontal" | "vertical"
+  }) {
+  return (
+    <ToggleGroupPrimitive
+      data-slot="toggle-group"
+      data-variant={variant}
+      data-size={size}
+      data-spacing={spacing}
+      data-orientation={orientation}
+      style={{ "--gap": spacing } as React.CSSProperties}
+      className={cn(
+        "group/toggle-group flex w-fit flex-row items-center gap-[--spacing(var(--gap))] rounded-lg data-[size=sm]:rounded-[min(var(--radius-md),10px)] data-vertical:flex-col data-vertical:items-stretch",
+        className
+      )}
+      {...props}
+    >
+      <ToggleGroupContext.Provider
+        value={{ variant, size, spacing, orientation }}
+      >
+        {children}
+      </ToggleGroupContext.Provider>
+    </ToggleGroupPrimitive>
+  )
+}
+
+function ToggleGroupItem({
+  className,
+  children,
+  variant = "default",
+  size = "default",
+  ...props
+}: TogglePrimitive.Props & VariantProps<typeof toggleVariants>) {
+  const context = React.useContext(ToggleGroupContext)
+
+  return (
+    <TogglePrimitive
+      data-slot="toggle-group-item"
+      data-variant={context.variant || variant}
+      data-size={context.size || size}
+      data-spacing={context.spacing}
+      className={cn(
+        "shrink-0 group-data-[spacing=0]/toggle-group:rounded-none group-data-[spacing=0]/toggle-group:px-2 focus:z-10 focus-visible:z-10 group-data-[spacing=0]/toggle-group:has-data-[icon=inline-end]:pr-1.5 group-data-[spacing=0]/toggle-group:has-data-[icon=inline-start]:pl-1.5 group-data-horizontal/toggle-group:data-[spacing=0]:first:rounded-l-lg group-data-vertical/toggle-group:data-[spacing=0]:first:rounded-t-lg group-data-horizontal/toggle-group:data-[spacing=0]:last:rounded-r-lg group-data-vertical/toggle-group:data-[spacing=0]:last:rounded-b-lg group-data-horizontal/toggle-group:data-[spacing=0]:data-[variant=outline]:border-l-0 group-data-vertical/toggle-group:data-[spacing=0]:data-[variant=outline]:border-t-0 group-data-horizontal/toggle-group:data-[spacing=0]:data-[variant=outline]:first:border-l group-data-vertical/toggle-group:data-[spacing=0]:data-[variant=outline]:first:border-t",
+        toggleVariants({
+          variant: context.variant || variant,
+          size: context.size || size,
+        }),
+        className
+      )}
+      {...props}
+    >
+      {children}
+    </TogglePrimitive>
+  )
+}
+
+export { ToggleGroup, ToggleGroupItem }

frontend/src/components/ui/toggle.tsx

@@ -0,0 +1,43 @@
+import { Toggle as TogglePrimitive } from "@base-ui/react/toggle"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const toggleVariants = cva(
+  "group/toggle inline-flex items-center justify-center gap-1 rounded-lg text-sm font-medium whitespace-nowrap transition-all outline-none hover:bg-muted hover:text-foreground focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-destructive/20 aria-pressed:bg-muted data-[state=on]:bg-muted dark:aria-invalid:ring-destructive/40 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
+  {
+    variants: {
+      variant: {
+        default: "bg-transparent",
+        outline: "border border-input bg-transparent hover:bg-muted",
+      },
+      size: {
+        default:
+          "h-8 min-w-8 px-2.5 has-data-[icon=inline-end]:pr-2 has-data-[icon=inline-start]:pl-2",
+        sm: "h-7 min-w-7 rounded-[min(var(--radius-md),12px)] px-2.5 text-[0.8rem] has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5 [&_svg:not([class*='size-'])]:size-3.5",
+        lg: "h-9 min-w-9 px-2.5 has-data-[icon=inline-end]:pr-2 has-data-[icon=inline-start]:pl-2",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+function Toggle({
+  className,
+  variant = "default",
+  size = "default",
+  ...props
+}: TogglePrimitive.Props & VariantProps<typeof toggleVariants>) {
+  return (
+    <TogglePrimitive
+      data-slot="toggle"
+      className={cn(toggleVariants({ variant, size, className }))}
+      {...props}
+    />
+  )
+}
+
+export { Toggle, toggleVariants }

frontend/src/components/ui/tooltip.tsx

@@ -0,0 +1,64 @@
+import { Tooltip as TooltipPrimitive } from "@base-ui/react/tooltip"
+
+import { cn } from "@/lib/utils"
+
+function TooltipProvider({
+  delay = 0,
+  ...props
+}: TooltipPrimitive.Provider.Props) {
+  return (
+    <TooltipPrimitive.Provider
+      data-slot="tooltip-provider"
+      delay={delay}
+      {...props}
+    />
+  )
+}
+
+function Tooltip({ ...props }: TooltipPrimitive.Root.Props) {
+  return <TooltipPrimitive.Root data-slot="tooltip" {...props} />
+}
+
+function TooltipTrigger({ ...props }: TooltipPrimitive.Trigger.Props) {
+  return <TooltipPrimitive.Trigger data-slot="tooltip-trigger" {...props} />
+}
+
+function TooltipContent({
+  className,
+  side = "top",
+  sideOffset = 4,
+  align = "center",
+  alignOffset = 0,
+  children,
+  ...props
+}: TooltipPrimitive.Popup.Props &
+  Pick<
+    TooltipPrimitive.Positioner.Props,
+    "align" | "alignOffset" | "side" | "sideOffset"
+  >) {
+  return (
+    <TooltipPrimitive.Portal>
+      <TooltipPrimitive.Positioner
+        align={align}
+        alignOffset={alignOffset}
+        side={side}
+        sideOffset={sideOffset}
+        className="isolate z-50"
+      >
+        <TooltipPrimitive.Popup
+          data-slot="tooltip-content"
+          className={cn(
+            "z-50 inline-flex w-fit max-w-xs origin-(--transform-origin) items-center gap-1.5 rounded-md bg-foreground px-3 py-1.5 text-xs text-background has-data-[slot=kbd]:pr-1.5 data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 **:data-[slot=kbd]:relative **:data-[slot=kbd]:isolate **:data-[slot=kbd]:z-50 **:data-[slot=kbd]:rounded-sm data-[state=delayed-open]:animate-in data-[state=delayed-open]:fade-in-0 data-[state=delayed-open]:zoom-in-95 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95",
+            className
+          )}
+          {...props}
+        >
+          {children}
+          <TooltipPrimitive.Arrow className="z-50 size-2.5 translate-y-[calc(-50%-2px)] rotate-45 rounded-[2px] bg-foreground fill-foreground data-[side=bottom]:top-1 data-[side=inline-end]:top-1/2! data-[side=inline-end]:-left-1 data-[side=inline-end]:-translate-y-1/2 data-[side=inline-start]:top-1/2! data-[side=inline-start]:-right-1 data-[side=inline-start]:-translate-y-1/2 data-[side=left]:top-1/2! data-[side=left]:-right-1 data-[side=left]:-translate-y-1/2 data-[side=right]:top-1/2! data-[side=right]:-left-1 data-[side=right]:-translate-y-1/2 data-[side=top]:-bottom-2.5" />
+        </TooltipPrimitive.Popup>
+      </TooltipPrimitive.Positioner>
+    </TooltipPrimitive.Portal>
+  )
+}
+
+export { Tooltip, TooltipTrigger, TooltipContent, TooltipProvider }

frontend/src/hooks/use-mobile.ts

@@ -0,0 +1,19 @@
+import * as React from "react"
+
+const MOBILE_BREAKPOINT = 768
+
+export function useIsMobile() {
+  const [isMobile, setIsMobile] = React.useState<boolean | undefined>(undefined)
+
+  React.useEffect(() => {
+    const mql = window.matchMedia(`(max-width: ${MOBILE_BREAKPOINT - 1}px)`)
+    const onChange = () => {
+      setIsMobile(window.innerWidth < MOBILE_BREAKPOINT)
+    }
+    mql.addEventListener("change", onChange)
+    setIsMobile(window.innerWidth < MOBILE_BREAKPOINT)
+    return () => mql.removeEventListener("change", onChange)
+  }, [])
+
+  return !!isMobile
+}

frontend/src/hooks/useBudget.ts

@@ -16,11 +16,11 @@ import {
 
 /** All budget data hangs off the ['budget', ...] key family; every mutation
  * invalidates the family so projection, month detail and items stay in sync. */
-export function useBudget(initialYear: number) {
+export function useBudget(initialYear: number, initialMonth?: number) {
   const queryClient = useQueryClient();
   const [year, setYear] = useState(initialYear);
   const [selectedMonth, setSelectedMonth] = useState<number>(
-    new Date().getMonth() + 1,
+    initialMonth ?? new Date().getMonth() + 1,
   );
 
   const projectionQ = useQuery({

frontend/src/index.css

@@ -28,11 +28,11 @@
     --border: oklch(0.92 0.004 286.32);
     --input: oklch(0.92 0.004 286.32);
     --ring: oklch(0.705 0.015 286.067);
-    --chart-1: oklch(0.55 0.16 145);
+    --chart-1: oklch(0.55 0.15 187);
-    --chart-2: oklch(0.62 0.19 25);
+    --chart-2: oklch(0.62 0.14 78);
-    --chart-3: oklch(0.58 0.14 250);
+    --chart-3: oklch(0.50 0.14 300);
-    --chart-4: oklch(0.68 0.15 80);
+    --chart-4: oklch(0.56 0.18 27);
-    --chart-5: oklch(0.52 0.13 320);
+    --chart-5: oklch(0.55 0.13 252);
     --radius: 0.625rem;
     --sidebar: oklch(0.985 0 0);
     --sidebar-foreground: oklch(0.141 0.005 285.823);
@@ -65,11 +65,11 @@
     --border: oklch(1 0 0 / 10%);
     --input: oklch(1 0 0 / 15%);
     --ring: oklch(0.552 0.016 285.938);
-    --chart-1: oklch(0.60 0.16 145);
+    --chart-1: oklch(0.62 0.11 187);
-    --chart-2: oklch(0.67 0.19 25);
+    --chart-2: oklch(0.66 0.13 78);
-    --chart-3: oklch(0.63 0.14 250);
+    --chart-3: oklch(0.60 0.14 300);
-    --chart-4: oklch(0.73 0.15 80);
+    --chart-4: oklch(0.64 0.16 27);
-    --chart-5: oklch(0.57 0.13 320);
+    --chart-5: oklch(0.64 0.13 252);
     --sidebar: oklch(0.21 0.006 285.885);
     --sidebar-foreground: oklch(0.985 0 0);
     --sidebar-primary: oklch(0.704 0.14 182.503);

frontend/src/lib/api-types.gen.ts

@@ -345,6 +345,23 @@ export interface paths {
         patch: operations["update_category_api_v1_categories__category_id__patch"];
         trace?: never;
     };
+    "/api/v1/chat/thread": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        post?: never;
+        /** Clear Thread */
+        delete: operations["clear_thread_api_v1_chat_thread_delete"];
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/v1/exchange-rate/": {
         parameters: {
             query?: never;
@@ -396,6 +413,53 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/v1/installment-plans/": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /** List Installment Plans */
+        get: operations["list_installment_plans_api_v1_installment_plans__get"];
+        put?: never;
+        /**
+         * Create Installment Plan
+         * @description Convert an existing credit-card purchase into a Tasa Cero plan.
+         */
+        post: operations["create_installment_plan_api_v1_installment_plans__post"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/api/v1/installment-plans/{plan_id}": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /** Get Installment Plan */
+        get: operations["get_installment_plan_api_v1_installment_plans__plan_id__get"];
+        put?: never;
+        post?: never;
+        /**
+         * Delete Installment Plan
+         * @description Unconvert: remove the plan and its cuotas; the anchor becomes a normal
+         *     transaction again.
+         */
+        delete: operations["delete_installment_plan_api_v1_installment_plans__plan_id__delete"];
+        options?: never;
+        head?: never;
+        /**
+         * Update Installment Plan
+         * @description Edit a plan; cuota rows are regenerated (per-cuota edits are lost).
+         */
+        patch: operations["update_installment_plan_api_v1_installment_plans__plan_id__patch"];
+        trace?: never;
+    };
     "/api/v1/municipal-receipts/": {
         parameters: {
             query?: never;
@@ -851,11 +915,9 @@ export interface components {
         AGUIRequest: {
             /**
              * Availableinterrupts
-             * @description List of interrupts that can be resumed by the server
+             * @description Canonical AG-UI interrupts that can be resumed by the server
              */
-            availableInterrupts?: {
+            availableInterrupts?: components["schemas"]["Interrupt"][] | null;
-                [key: string]: unknown;
-            }[] | null;
             /**
              * Context
              * @description List of context objects provided to the agent
@@ -884,11 +946,9 @@ export interface components {
             parent_run_id?: string | null;
             /**
              * Resume
-             * @description Resume payload containing interrupt responses
+             * @description Resume payload for continuing interrupted runs
              */
-            resume?: {
+            resume?: components["schemas"]["ResumeEntry"][] | null;
-                [key: string]: unknown;
-            } | null;
             /**
              * Run Id
              * @description Optional run identifier for tracking
@@ -1153,6 +1213,11 @@ export interface components {
             /** Name */
             name?: string | null;
         };
+        /** ClearThreadResponse */
+        ClearThreadResponse: {
+            /** Cleared */
+            cleared: boolean;
+        };
         /**
          * Currency
          * @enum {string}
@@ -1189,6 +1254,149 @@ export interface components {
             /** Detail */
             detail?: components["schemas"]["ValidationError"][];
         };
+        /** InstallmentPlanCreate */
+        InstallmentPlanCreate: {
+            /** First Installment Date */
+            first_installment_date?: string | null;
+            /**
+             * Num Installments
+             * @default 3
+             */
+            num_installments: number;
+            /** Transaction Id */
+            transaction_id: number;
+        };
+        /** InstallmentPlanDetail */
+        InstallmentPlanDetail: {
+            /** Anchor Transaction Id */
+            anchor_transaction_id: number;
+            /**
+             * Cuotas
+             * @default []
+             */
+            cuotas: components["schemas"]["TransactionRead"][];
+            /** Cuotas Billed */
+            cuotas_billed: number;
+            /** Currency */
+            currency: string;
+            /**
+             * First Installment Date
+             * Format: date-time
+             */
+            first_installment_date: string;
+            /** Id */
+            id: number;
+            /** Installment Amount */
+            installment_amount: number;
+            /** Is Completed */
+            is_completed: boolean;
+            /** Last Installment Amount */
+            last_installment_amount: number;
+            /** Merchant */
+            merchant: string;
+            /** Next Cuota Date */
+            next_cuota_date?: string | null;
+            /** Notes */
+            notes?: string | null;
+            /** Num Installments */
+            num_installments: number;
+            /** Paid Amount */
+            paid_amount: number;
+            /**
+             * Purchase Date
+             * Format: date-time
+             */
+            purchase_date: string;
+            /** Remaining Amount */
+            remaining_amount: number;
+            /** Total Amount */
+            total_amount: number;
+        };
+        /** InstallmentPlanListResponse */
+        InstallmentPlanListResponse: {
+            /** Plans */
+            plans: components["schemas"]["InstallmentPlanRead"][];
+            /** Total Remaining */
+            total_remaining: number;
+        };
+        /** InstallmentPlanRead */
+        InstallmentPlanRead: {
+            /** Anchor Transaction Id */
+            anchor_transaction_id: number;
+            /** Cuotas Billed */
+            cuotas_billed: number;
+            /** Currency */
+            currency: string;
+            /**
+             * First Installment Date
+             * Format: date-time
+             */
+            first_installment_date: string;
+            /** Id */
+            id: number;
+            /** Installment Amount */
+            installment_amount: number;
+            /** Is Completed */
+            is_completed: boolean;
+            /** Last Installment Amount */
+            last_installment_amount: number;
+            /** Merchant */
+            merchant: string;
+            /** Next Cuota Date */
+            next_cuota_date?: string | null;
+            /** Notes */
+            notes?: string | null;
+            /** Num Installments */
+            num_installments: number;
+            /** Paid Amount */
+            paid_amount: number;
+            /**
+             * Purchase Date
+             * Format: date-time
+             */
+            purchase_date: string;
+            /** Remaining Amount */
+            remaining_amount: number;
+            /** Total Amount */
+            total_amount: number;
+        };
+        /** InstallmentPlanUpdate */
+        InstallmentPlanUpdate: {
+            /** First Installment Date */
+            first_installment_date?: string | null;
+            /** Notes */
+            notes?: string | null;
+            /** Num Installments */
+            num_installments?: number | null;
+        };
+        /**
+         * Interrupt
+         * @description A pause carried inside ``RunFinishedEvent.outcome`` when the outcome is
+         *     ``RunFinishedInterruptOutcome``. The client resumes
+         *     by addressing this interrupt in the resume array of the next RunAgentInput.
+         */
+        Interrupt: {
+            /** Expiresat */
+            expiresAt?: string | null;
+            /** Id */
+            id: string;
+            /** Message */
+            message?: string | null;
+            /** Metadata */
+            metadata?: {
+                [key: string]: unknown;
+            } | null;
+            /** Reason */
+            reason: string;
+            /** Responseschema */
+            responseSchema?: {
+                [key: string]: unknown;
+            } | null;
+            /** Toolcallid */
+            toolCallId?: string | null;
+        } & {
+            [key: string]: unknown;
+        };
         /** LoginRequest */
         LoginRequest: {
             /** Password */
@@ -1647,6 +1855,23 @@ export interface components {
                 [key: string]: unknown;
             } | null;
         };
+        /**
+         * ResumeEntry
+         * @description A per-interrupt response in the resume array of a RunAgentInput.
+         */
+        ResumeEntry: {
+            /** Interruptid */
+            interruptId: string;
+            /** Payload */
+            payload?: unknown | null;
+            /**
+             * Status
+             * @enum {string}
+             */
+            status: "resolved" | "cancelled";
+        } & {
+            [key: string]: unknown;
+        };
         /** SalariosSummary */
         SalariosSummary: {
             /** Count */
@@ -1857,6 +2082,13 @@ export interface components {
             deferred_to_next_cycle: boolean;
             /** Id */
             id: number;
+            /** Installment Plan Id */
+            installment_plan_id?: number | null;
+            /**
+             * Is Installment Anchor
+             * @default false
+             */
+            is_installment_anchor: boolean;
             /** Merchant */
             merchant: string;
             /** Notes */
@@ -2250,6 +2482,8 @@ export interface operations {
             query?: {
                 cycle_year?: number | null;
                 cycle_month?: number | null;
+                start_date?: string | null;
+                end_date?: string | null;
             };
             header?: {
                 authorization?: string | null;
@@ -2286,6 +2520,8 @@ export interface operations {
             query?: {
                 cycle_year?: number | null;
                 cycle_month?: number | null;
+                start_date?: string | null;
+                end_date?: string | null;
             };
             header?: {
                 authorization?: string | null;
@@ -2850,6 +3086,39 @@ export interface operations {
             };
         };
     };
+    clear_thread_api_v1_chat_thread_delete: {
+        parameters: {
+            query?: never;
+            header?: {
+                authorization?: string | null;
+            };
+            path?: never;
+            cookie?: {
+                ws_token?: string | null;
+            };
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["ClearThreadResponse"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
     current_rate_api_v1_exchange_rate__get: {
         parameters: {
             query?: never;
@@ -2955,6 +3224,183 @@ export interface operations {
             };
         };
     };
+    list_installment_plans_api_v1_installment_plans__get: {
+        parameters: {
+            query?: never;
+            header?: {
+                authorization?: string | null;
+            };
+            path?: never;
+            cookie?: {
+                ws_token?: string | null;
+            };
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["InstallmentPlanListResponse"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
+    create_installment_plan_api_v1_installment_plans__post: {
+        parameters: {
+            query?: never;
+            header?: {
+                authorization?: string | null;
+            };
+            path?: never;
+            cookie?: {
+                ws_token?: string | null;
+            };
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["InstallmentPlanCreate"];
+            };
+        };
+        responses: {
+            /** @description Successful Response */
+            201: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["InstallmentPlanRead"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
+    get_installment_plan_api_v1_installment_plans__plan_id__get: {
+        parameters: {
+            query?: never;
+            header?: {
+                authorization?: string | null;
+            };
+            path: {
+                plan_id: number;
+            };
+            cookie?: {
+                ws_token?: string | null;
+            };
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["InstallmentPlanDetail"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
+    delete_installment_plan_api_v1_installment_plans__plan_id__delete: {
+        parameters: {
+            query?: never;
+            header?: {
+                authorization?: string | null;
+            };
+            path: {
+                plan_id: number;
+            };
+            cookie?: {
+                ws_token?: string | null;
+            };
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            204: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
+    update_installment_plan_api_v1_installment_plans__plan_id__patch: {
+        parameters: {
+            query?: never;
+            header?: {
+                authorization?: string | null;
+            };
+            path: {
+                plan_id: number;
+            };
+            cookie?: {
+                ws_token?: string | null;
+            };
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["InstallmentPlanUpdate"];
+            };
+        };
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["InstallmentPlanRead"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
     list_receipts_api_v1_municipal_receipts__get: {
         parameters: {
             query?: never;

frontend/src/lib/api.ts

@@ -130,6 +130,8 @@ export async function logout() {
   await fetch("/api/auth/logout", { method: "POST", credentials: "same-origin" });
 }
 
+export const getMe = () => api.get<{ username: string }>("/auth/me");
+
 // ─── Types ──────────────────────────────────────────────────────────────────
 
 export type Account = Schema<'AccountRead'>;
@@ -240,6 +242,40 @@ export const upsertBalanceOverride = (
 export const deleteBalanceOverride = (year: number, month: number) =>
   api.delete(`/budget/balance-override/${year}/${month}`);
 
+// --- Transactions ---
+
+export const getRecentTransactions = (limit = 5) =>
+  api.get<Transaction[]>("/transactions/recent", { params: { limit } });
+
+// --- Installment Plans (Tasa Cero) ---
+
+export type InstallmentPlan = Schema<'InstallmentPlanRead'>;
+export type InstallmentPlanDetail = Schema<'InstallmentPlanDetail'>;
+export type InstallmentPlanListResponse = Schema<'InstallmentPlanListResponse'>;
+
+export interface InstallmentPlanCreate {
+  transaction_id: number;
+  num_installments?: number;
+  first_installment_date?: string | null;
+}
+
+export interface InstallmentPlanUpdate {
+  num_installments?: number;
+  first_installment_date?: string | null;
+  notes?: string | null;
+}
+
+export const getInstallmentPlans = () =>
+  api.get<InstallmentPlanListResponse>("/installment-plans/");
+export const getInstallmentPlanDetail = (id: number) =>
+  api.get<InstallmentPlanDetail>(`/installment-plans/${id}`);
+export const createInstallmentPlan = (data: InstallmentPlanCreate) =>
+  api.post<InstallmentPlan>("/installment-plans/", data);
+export const updateInstallmentPlan = (id: number, data: InstallmentPlanUpdate) =>
+  api.patch<InstallmentPlan>(`/installment-plans/${id}`, data);
+export const deleteInstallmentPlan = (id: number) =>
+  api.delete(`/installment-plans/${id}`);
+
 // --- Salarios ---
 
 export type SalariosSummary = Schema<'SalariosSummary'>;

frontend/src/lib/charts.ts

@@ -0,0 +1,32 @@
+/** Shared chart color system (see dataviz standard).
+ *
+ * - Categorical (identity): the five validated --chart-N slots, assigned in
+ *   fixed order, NEVER cycled — anything past the 5th folds into "Otros".
+ * - Sequential (magnitude within one concept, e.g. income sources ranked by
+ *   size): one hue ramped toward the surface via color-mix, which stays
+ *   correct in both light and dark mode.
+ */
+
+export const SERIES_VARS = [
+  "var(--chart-1)",
+  "var(--chart-2)",
+  "var(--chart-3)",
+  "var(--chart-4)",
+  "var(--chart-5)",
+] as const;
+
+export const OTROS_COLOR = "var(--muted-foreground)";
+export const MAX_SLICES = SERIES_VARS.length;
+
+export function categoricalColor(index: number, name?: string): string {
+  if (name === "Otros" || name === "Sin categoría") return OTROS_COLOR;
+  return SERIES_VARS[Math.min(index, SERIES_VARS.length - 1)];
+}
+
+/** Rank-ordered shade of one hue: rank 0 (largest) is the full token, later
+ * ranks fade toward the surface but never below 35% so they keep chroma. */
+export function rampColor(baseVar: string, rank: number, count: number): string {
+  if (count <= 1 || rank <= 0) return baseVar;
+  const pct = Math.round(100 - (rank / Math.max(count - 1, 1)) * 65);
+  return `color-mix(in oklab, ${baseVar} ${pct}%, var(--background))`;
+}

frontend/src/lib/dates.ts

@@ -18,6 +18,29 @@ export function formatShortDate(dateStr: string): string {
   });
 }
 
+/** Budget month M = the credit-card cycle ENDING on the 18th of M
+ * (matches get_cycle_range in the backend). After the 18th we are already
+ * in next month's cycle — including the Dec 19 → January-next-year wrap. */
+export function currentBudgetCycle(today = new Date()): {
+  year: number;
+  month: number;
+  start: Date;
+  end: Date;
+} {
+  let year = today.getFullYear();
+  let month = today.getMonth() + 1;
+  if (today.getDate() > 18) {
+    month += 1;
+    if (month === 13) {
+      month = 1;
+      year += 1;
+    }
+  }
+  const end = new Date(year, month - 1, 18);
+  const start = new Date(year, month - 2, 18);
+  return { year, month, start, end };
+}
+
 /** "hace 3 días" / "hace 2 horas" / "hace un momento" */
 export function formatRelativeAge(iso: string): string {
   const ms = Date.now() - new Date(iso).getTime();

frontend/src/lib/navigation.ts

@@ -0,0 +1,71 @@
+import {
+  BarChart3,
+  Calculator,
+  Droplets,
+  Home,
+  Landmark,
+  Layers,
+  PiggyBank,
+  RefreshCw,
+  Sparkles,
+  Telescope,
+  TrendingUp,
+  type LucideIcon,
+} from "lucide-react";
+
+/** Single source of truth for the sidebar nav and header breadcrumbs. */
+
+export interface NavItem {
+  to: string;
+  icon: LucideIcon;
+  label: string;
+}
+
+export interface NavSection {
+  label: string;
+  items: NavItem[];
+}
+
+export const navSections: NavSection[] = [
+  {
+    label: "General",
+    items: [
+      { to: "/", icon: Home, label: "Inicio" },
+      { to: "/asistente", icon: Sparkles, label: "Asistente" },
+      { to: "/sync", icon: RefreshCw, label: "Sincronización" },
+    ],
+  },
+  {
+    label: "Finanzas",
+    items: [
+      { to: "/budget", icon: Calculator, label: "Presupuesto" },
+      { to: "/salarios", icon: Landmark, label: "Salarios" },
+      { to: "/financiamientos", icon: Layers, label: "Financiamientos" },
+      { to: "/pensions", icon: PiggyBank, label: "Pensiones" },
+      { to: "/proyecciones", icon: TrendingUp, label: "Proyecciones" },
+      { to: "/planificador", icon: Telescope, label: "Planificador" },
+      { to: "/analytics", icon: BarChart3, label: "Analytics" },
+    ],
+  },
+  {
+    label: "Servicios",
+    items: [
+      { to: "/servicios-municipales", icon: Droplets, label: "Municipalidad" },
+    ],
+  },
+];
+
+/** "/" must match exactly — prefix-matching it would mark Inicio active everywhere. */
+export function isNavActive(to: string, pathname: string): boolean {
+  if (to === "/") return pathname === "/";
+  return pathname === to || pathname.startsWith(`${to}/`);
+}
+
+export function titleFor(pathname: string): string {
+  for (const section of navSections) {
+    for (const item of section.items) {
+      if (isNavActive(item.to, pathname)) return item.label;
+    }
+  }
+  return "WealthySmart";
+}

frontend/src/pages/Analytics.tsx

@@ -1,5 +1,6 @@
 import { useState } from 'react';
 import { useQuery } from '@tanstack/react-query';
+import { type DateRange } from 'react-day-picker';
 import {
   PieChart,
   Pie,
@@ -11,14 +12,32 @@ import {
   LineChart,
   Line,
 } from 'recharts';
-import { BarChart3 } from 'lucide-react';
+import { BarChart3, CalendarRange, ChartPie, X } from 'lucide-react';
 
 import api, { getRateHistory } from '@/lib/api';
+import { categoricalColor, MAX_SLICES } from '@/lib/charts';
 import ErrorState from '@/components/ErrorState';
 import BillingCycleSelector from '@/components/BillingCycleSelector';
+import { PageHeader } from '@/components/page-header';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Button } from '@/components/ui/button';
+import { Calendar } from '@/components/ui/calendar';
+import {
+  Popover,
+  PopoverContent,
+  PopoverTrigger,
+} from '@/components/ui/popover';
+import {
+  Empty,
+  EmptyDescription,
+  EmptyHeader,
+  EmptyMedia,
+  EmptyTitle,
+} from '@/components/ui/empty';
 import {
   ChartContainer,
+  ChartLegend,
+  ChartLegendContent,
   ChartTooltip,
   ChartTooltipContent,
   type ChartConfig,
@@ -47,45 +66,78 @@ interface DailySpending {
   count: number;
 }
 
-const COLORS = [
-  '#B45309', '#16A34A', '#2563EB', '#DC2626', '#7C3AED',
-  '#D97706', '#0F766E', '#DB2777', '#EA580C', '#4F46E5',
-];
 
 function formatCRC(value: number) {
   return `₡${Math.round(value).toLocaleString('es-CR')}`;
 }
 
-const trendChartConfig = {
+/** Top 5 categories keep their own slice; the rest aggregate into "Otros". */
-  total_crc: {
+function foldCategories(cats: CategorySpending[]) {
-    label: 'Total CRC',
+  if (cats.length <= MAX_SLICES) return cats;
-    color: 'var(--chart-1)',
+  const head = cats.slice(0, MAX_SLICES);
+  const rest = cats.slice(MAX_SLICES);
+  return [
+    ...head,
+    {
+      category_id: null,
+      category_name: 'Otros',
+      total: rest.reduce((s, c) => s + c.total, 0),
+      count: rest.reduce((s, c) => s + c.count, 0),
+      percentage: +rest.reduce((s, c) => s + c.percentage, 0).toFixed(1),
     },
+  ];
+}
+
+
+function ChartEmpty({ description }: { description: string }) {
+  return (
+    <Empty className="h-56">
+      <EmptyHeader>
+        <EmptyMedia variant="icon">
+          <ChartPie />
+        </EmptyMedia>
+        <EmptyTitle>Sin datos</EmptyTitle>
+        <EmptyDescription>{description}</EmptyDescription>
+      </EmptyHeader>
+    </Empty>
+  );
+}
+
+const trendChartConfig = {
+  total_crc: { label: 'Total CRC', color: 'var(--chart-1)' },
 } satisfies ChartConfig;
 
 const rateChartConfig = {
   sell_rate: { label: 'Venta', color: 'var(--chart-1)' },
-  buy_rate: { label: 'Compra', color: 'var(--chart-2)' },
+  buy_rate: { label: 'Compra', color: 'var(--chart-5)' },
 } satisfies ChartConfig;
 
 const dailyChartConfig = {
-  total: {
+  total: { label: 'Gasto diario', color: 'var(--chart-1)' },
-    label: 'Gasto Diario',
-    color: 'var(--chart-2)',
-  },
 } satisfies ChartConfig;
 
 export default function Analytics() {
   const [cycle, setCycle] = useState<{ year: number; month: number } | null>(null);
-  const cycleParams: Record<string, string> = cycle
+  const [range, setRange] = useState<DateRange | undefined>();
+
+  const toISODate = (d: Date) => d.toISOString().slice(0, 10);
+  const nextDay = (d: Date) => new Date(d.getFullYear(), d.getMonth(), d.getDate() + 1);
+  const rangeActive = !!(range?.from && range?.to);
+  // Range takes precedence over the billing-cycle filter (end is exclusive).
+  const periodParams: Record<string, string> = rangeActive
+    ? {
+        start_date: toISODate(range!.from!),
+        end_date: toISODate(nextDay(range!.to!)),
+      }
+    : cycle
       ? { cycle_year: String(cycle.year), cycle_month: String(cycle.month) }
       : {};
 
   const byCategoryQ = useQuery({
-    queryKey: ['analytics', 'by-category', cycle],
+    queryKey: ['analytics', 'by-category', cycle, range],
     queryFn: ({ signal }) =>
       api
-        .get<CategorySpending[]>('/analytics/by-category', { params: cycleParams, signal })
+        .get<CategorySpending[]>('/analytics/by-category', { params: periodParams, signal })
         .then((r) => r.data),
     placeholderData: (prev) => prev,
   });
@@ -97,15 +149,16 @@ export default function Analytics() {
       api.get<MonthlyTrend[]>('/analytics/monthly-trend', { signal }).then((r) => r.data),
   });
   const dailyQ = useQuery({
-    queryKey: ['analytics', 'daily', cycle],
+    queryKey: ['analytics', 'daily', cycle, range],
     queryFn: ({ signal }) =>
       api
-        .get<DailySpending[]>('/analytics/daily-spending', { params: cycleParams, signal })
+        .get<DailySpending[]>('/analytics/daily-spending', { params: periodParams, signal })
         .then((r) => r.data),
     placeholderData: (prev) => prev,
   });
 
   const byCategory = byCategoryQ.data ?? [];
+  const folded = foldCategories(byCategory);
   const trend = trendQ.data ?? [];
   const daily = dailyQ.data ?? [];
   const ratesQ = useQuery({
@@ -125,27 +178,70 @@ export default function Analytics() {
     dailyQ.refetch();
   };
 
-  // Build dynamic chart config for pie chart
+  const pieChartConfig = folded.reduce<ChartConfig>((acc, cat, i) => {
-  const pieChartConfig = byCategory.reduce<ChartConfig>((acc, cat, i) => {
     acc[cat.category_name] = {
       label: cat.category_name,
-      color: COLORS[i % COLORS.length],
+      color: categoricalColor(i, cat.category_name),
     };
     return acc;
   }, {});
 
   return (
     <div className="space-y-6">
-      <div className="flex flex-col sm:flex-row sm:items-center justify-between gap-4">
+      <PageHeader
-        <div>
+        icon={BarChart3}
-          <div className="flex items-center gap-2">
+        title="Analytics"
-            <BarChart3 className="w-5 h-5 text-primary" />
+        subtitle="Desglose y tendencias de gasto"
-            <h1 className="text-2xl font-bold font-heading">Analytics</h1>
+        actions={
-          </div>
+          <>
-          <p className="text-sm text-muted-foreground mt-1">Desglose y tendencias de gasto</p>
+            <Popover>
-        </div>
+              <PopoverTrigger
-        <BillingCycleSelector value={cycle} onChange={setCycle} />
+                render={
-      </div>
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    className={rangeActive ? 'text-foreground' : 'text-muted-foreground'}
+                  />
+                }
+              >
+                <CalendarRange className="w-4 h-4 mr-2" aria-hidden />
+                {rangeActive
+                  ? `${range!.from!.toLocaleDateString('es-CR', { day: 'numeric', month: 'short' })} – ${range!.to!.toLocaleDateString('es-CR', { day: 'numeric', month: 'short' })}`
+                  : 'Rango'}
+              </PopoverTrigger>
+              <PopoverContent className="w-auto p-0" align="end">
+                <Calendar
+                  mode="range"
+                  selected={range}
+                  onSelect={(r) => {
+                    setRange(r);
+                    if (r?.from && r?.to) setCycle(null);
+                  }}
+                  numberOfMonths={2}
+                />
+              </PopoverContent>
+            </Popover>
+            {rangeActive && (
+              <Button
+                variant="ghost"
+                size="icon"
+                onClick={() => setRange(undefined)}
+                title="Quitar rango"
+                aria-label="Quitar rango de fechas"
+              >
+                <X className="w-4 h-4" aria-hidden />
+              </Button>
+            )}
+            <BillingCycleSelector
+              value={cycle}
+              onChange={(c) => {
+                setCycle(c);
+                if (c) setRange(undefined);
+              }}
+            />
+          </>
+        }
+      />
 
       {anyError && (
         <ErrorState
@@ -155,24 +251,22 @@ export default function Analytics() {
       )}
 
       <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
-        {/* Spending by Category - Donut */}
+        {/* Gasto por categoría — donut */}
         <Card>
           <CardHeader>
-            <CardTitle className="text-sm uppercase tracking-wider text-muted-foreground">
+            <CardTitle className="text-sm font-medium text-muted-foreground">
-              Spending by Category
+              Gasto por categoría
             </CardTitle>
           </CardHeader>
           <CardContent>
-            {byCategory.length === 0 ? (
+            {folded.length === 0 ? (
-              <div className="h-64 flex items-center justify-center text-muted-foreground text-sm">
+              <ChartEmpty description="Sin gastos en este período." />
-                Sin datos para este período
-              </div>
             ) : (
               <div className="flex flex-col items-center">
                 <ChartContainer data-sensitive config={pieChartConfig} className="h-[260px] w-full">
                   <PieChart>
                     <Pie
-                      data={byCategory}
+                      data={folded}
                       dataKey="total"
                       nameKey="category_name"
                       cx="50%"
@@ -180,10 +274,12 @@ export default function Analytics() {
                       innerRadius={60}
                       outerRadius={100}
                       paddingAngle={2}
-                      strokeWidth={0}
+                      strokeWidth={2}
+                      stroke="var(--background)"
+                      isAnimationActive={false}
                     >
-                      {byCategory.map((_, i) => (
+                      {folded.map((cat, i) => (
-                        <Cell key={i} fill={COLORS[i % COLORS.length]} />
+                        <Cell key={cat.category_name} fill={categoricalColor(i, cat.category_name)} />
                       ))}
                     </Pie>
                     <ChartTooltip
@@ -198,11 +294,11 @@ export default function Analytics() {
 
                 {/* Legend */}
                 <div className="grid grid-cols-2 gap-x-6 gap-y-1.5 mt-2 w-full max-w-md">
-                  {byCategory.slice(0, 10).map((cat, i) => (
+                  {folded.map((cat, i) => (
                     <div key={cat.category_name} className="flex items-center gap-2 text-xs">
                       <div
                         className="w-2.5 h-2.5 rounded-full flex-shrink-0"
-                        style={{ background: COLORS[i % COLORS.length] }}
+                        style={{ background: categoricalColor(i, cat.category_name) }}
                       />
                       <span className="text-muted-foreground truncate">{cat.category_name}</span>
                       <span data-sensitive className="text-muted-foreground/60 ml-auto">{cat.percentage}%</span>
@@ -214,26 +310,20 @@ export default function Analytics() {
           </CardContent>
         </Card>
 
-        {/* Monthly Trend - Bar */}
+        {/* Gasto mensual — barras por ciclo */}
         <Card>
           <CardHeader>
-            <CardTitle className="text-sm uppercase tracking-wider text-muted-foreground">
+            <CardTitle className="text-sm font-medium text-muted-foreground">
-              Monthly Spending (CRC)
+              Gasto mensual por ciclo (CRC)
             </CardTitle>
           </CardHeader>
           <CardContent>
             {trend.length === 0 ? (
-              <div className="h-64 flex items-center justify-center text-muted-foreground text-sm">
+              <ChartEmpty description="Todavía no hay ciclos con datos." />
-                No data
-              </div>
             ) : (
               <ChartContainer data-sensitive config={trendChartConfig} className="h-[300px] w-full">
                 <BarChart data={trend}>
-                  <XAxis
+                  <XAxis dataKey="label" axisLine={false} tickLine={false} />
-                    dataKey="label"
-                    axisLine={false}
-                    tickLine={false}
-                  />
                   <YAxis
                     axisLine={false}
                     tickLine={false}
@@ -246,36 +336,39 @@ export default function Analytics() {
                       />
                     }
                   />
-                  <Bar dataKey="total_crc" fill="var(--color-total_crc)" radius={[4, 4, 0, 0]} />
+                  <Bar
+                    dataKey="total_crc"
+                    fill="var(--color-total_crc)"
+                    radius={[4, 4, 0, 0]}
+                    isAnimationActive={false}
+                  />
                 </BarChart>
               </ChartContainer>
             )}
           </CardContent>
         </Card>
 
-        {/* Daily Spending - Line */}
+        {/* Gasto diario — barras */}
         <Card className="lg:col-span-2">
           <CardHeader>
-            <CardTitle className="text-sm uppercase tracking-wider text-muted-foreground">
+            <CardTitle className="text-sm font-medium text-muted-foreground">
-              Daily Spending
+              Gasto diario
             </CardTitle>
           </CardHeader>
           <CardContent>
             {daily.length === 0 ? (
-              <div className="h-48 flex items-center justify-center text-muted-foreground text-sm">
+              <ChartEmpty description="Sin gastos en este período." />
-                Sin datos para este período
-              </div>
             ) : (
               <ChartContainer data-sensitive config={dailyChartConfig} className="h-[240px] w-full">
-                <LineChart data={daily}>
+                <BarChart data={daily}>
                   <XAxis
                     dataKey="date"
                     axisLine={false}
                     tickLine={false}
-                    tickFormatter={(v) => {
+                    minTickGap={24}
-                      const d = new Date(v);
+                    tickFormatter={(v) =>
-                      return `${d.getMonth() + 1}/${d.getDate()}`;
+                      new Date(v).toLocaleDateString('es-CR', { month: 'short', day: 'numeric' })
-                    }}
+                    }
                   />
                   <YAxis
                     axisLine={false}
@@ -292,36 +385,34 @@ export default function Analytics() {
                       />
                     }
                   />
-                  <Line
+                  <Bar
-                    type="monotone"
                     dataKey="total"
-                    stroke="var(--color-total)"
+                    fill="var(--color-total)"
-                    strokeWidth={2}
+                    radius={[2, 2, 0, 0]}
-                    dot={{ fill: 'var(--color-total)', r: 3 }}
+                    isAnimationActive={false}
-                    activeDot={{ r: 5 }}
                   />
-                </LineChart>
+                </BarChart>
               </ChartContainer>
             )}
           </CardContent>
         </Card>
       </div>
 
-      {/* Top categories summary */}
+      {/* Categorías principales */}
       {byCategory.length > 0 && (
         <Card>
           <CardHeader>
-            <CardTitle className="text-sm uppercase tracking-wider text-muted-foreground">
+            <CardTitle className="text-sm font-medium text-muted-foreground">
-              Top Categories
+              Categorías principales
             </CardTitle>
           </CardHeader>
           <CardContent>
             <div className="space-y-3">
-              {byCategory.slice(0, 8).map((cat, i) => (
+              {folded.map((cat, i) => (
                 <div key={cat.category_name} className="flex items-center gap-3">
                   <div
                     className="w-3 h-3 rounded-full flex-shrink-0"
-                    style={{ background: COLORS[i % COLORS.length] }}
+                    style={{ background: categoricalColor(i, cat.category_name) }}
                   />
                   <span className="text-sm flex-1">{cat.category_name}</span>
                   <span data-sensitive className="text-xs text-muted-foreground">{cat.count} txns</span>
@@ -332,8 +423,8 @@ export default function Analytics() {
                     <div
                       className="h-1.5 rounded-full"
                       style={{
-                        width: `${cat.percentage}%`,
+                        width: `${Math.min(100, cat.percentage)}%`,
-                        background: COLORS[i % COLORS.length],
+                        background: categoricalColor(i, cat.category_name),
                       }}
                     />
                   </div>
@@ -343,28 +434,25 @@ export default function Analytics() {
           </CardContent>
         </Card>
       )}
-      {/* Exchange rate history */}
+
+      {/* Tipo de cambio */}
       <Card>
         <CardHeader>
-          <CardTitle className="text-sm uppercase tracking-wider text-muted-foreground">
+          <CardTitle className="text-sm font-medium text-muted-foreground">
-            Tipo de Cambio USD/CRC (90 días)
+            Tipo de cambio USD/CRC (90 días)
           </CardTitle>
         </CardHeader>
         <CardContent>
           {(ratesQ.data?.length ?? 0) < 2 ? (
-            <div className="h-40 flex items-center justify-center text-muted-foreground text-sm">
+            <ChartEmpty description="Sin historial suficiente." />
-              Sin historial suficiente
-            </div>
           ) : (
-            <ChartContainer
+            <ChartContainer config={rateChartConfig} className="h-[200px] w-full">
-              config={rateChartConfig}
-              className="h-[200px] w-full"
-            >
               <LineChart data={ratesQ.data}>
                 <XAxis
                   dataKey="day"
                   axisLine={false}
                   tickLine={false}
+                  minTickGap={24}
                   tickFormatter={(v) =>
                     new Date(v).toLocaleDateString('es-CR', {
                       month: 'short',
@@ -385,19 +473,22 @@ export default function Analytics() {
                     />
                   }
                 />
+                <ChartLegend content={<ChartLegendContent />} />
                 <Line
                   type="monotone"
                   dataKey="sell_rate"
-                  stroke="var(--chart-1)"
+                  stroke="var(--color-sell_rate)"
                   dot={false}
                   strokeWidth={2}
+                  isAnimationActive={false}
                 />
                 <Line
                   type="monotone"
                   dataKey="buy_rate"
-                  stroke="var(--chart-2)"
+                  stroke="var(--color-buy_rate)"
                   dot={false}
                   strokeWidth={2}
+                  isAnimationActive={false}
                 />
               </LineChart>
             </ChartContainer>

frontend/src/pages/Asistente.tsx

@@ -1,8 +1,24 @@
-import { CopilotChat, useConfigureSuggestions } from "@copilotkit/react-core/v2";
+import { useEffect, useRef, useState } from "react";
+import { useLocation, useNavigate } from "react-router-dom";
+import {
+  CopilotChat,
+  useAgent,
+  useConfigureSuggestions,
+  useCopilotKit,
+} from "@copilotkit/react-core/v2";
 import { useCopilotAction } from "@copilotkit/react-core";
-import { Sparkles } from "lucide-react";
+import { MessageSquarePlus, Sparkles } from "lucide-react";
+import { toast } from "sonner";
+import { Button } from "@/components/ui/button";
+import ConfirmDialog from "@/components/ConfirmDialog";
+import { PageHeader } from '@/components/page-header';
 import { SpendingSummaryCard, type SpendingSummaryArgs } from "@/components/chat/ChatCards";
 
+// Single persistent conversation: the backend snapshot store keys on this
+// same id (backend/app/api/v1/endpoints/chat.py). An explicit, stable
+// threadId also stops CopilotChat from wiping messages on remount.
+const CHAT_THREAD_ID = "main";
+
 const STATIC_SUGGESTIONS = {
   available: "before-first-message" as const,
   suggestions: [
@@ -16,6 +32,74 @@ const STATIC_SUGGESTIONS = {
 export default function Asistente() {
   useConfigureSuggestions(STATIC_SUGGESTIONS);
 
+  const location = useLocation();
+  const navigate = useNavigate();
+  const { agent } = useAgent({ agentId: "wealthysmart" });
+  const { copilotkit } = useCopilotKit();
+  const [confirmClear, setConfirmClear] = useState(false);
+  const [clearing, setClearing] = useState(false);
+
+  // Ask-box flow: a question typed on Inicio arrives via router state.
+  // History hydration is no longer done here — CopilotChat's mount connect
+  // replays the persisted thread through the BFF's PostgresAgentRunner. We
+  // still await our own connect before sending so the run's input carries
+  // the full client-known history (idempotent with CopilotChat's connect:
+  // the MESSAGES_SNAPSHOT merge is id-based).
+  const bootRef = useRef(false);
+  useEffect(() => {
+    const ask = (location.state as { ask?: string } | null)?.ask;
+    if (!ask || !agent || bootRef.current) return;
+    bootRef.current = true;
+    // Clear the state so back/refresh doesn't re-send the question.
+    navigate(location.pathname, { replace: true, state: null });
+    void (async () => {
+      agent.threadId = CHAT_THREAD_ID;
+      if (agent.messages.length === 0) {
+        try {
+          await copilotkit.connectAgent({ agent });
+        } catch (err) {
+          console.error("[asistente] connect before ask failed:", err);
+        }
+      }
+      agent.addMessage({
+        id: crypto.randomUUID(),
+        role: "user",
+        content: ask,
+      });
+      void copilotkit.runAgent({ agent });
+    })();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [agent]);
+
+  const clearThread = async () => {
+    setClearing(true);
+    try {
+      const res = await fetch("/api/v1/chat/thread", {
+        method: "DELETE",
+        credentials: "include",
+      });
+      if (!res.ok) {
+        throw new Error(`DELETE /chat/thread → ${res.status}`);
+      }
+      // NOTE: there is no official flush for the runtime's in-memory thread
+      // store at CK 1.62 — the single-route endpoint we mount only accepts
+      // agent/run|connect|stop, info, transcribe; the threads/* router
+      // (incl. threads/clear) is a separate entrypoint this adapter doesn't
+      // serve. The BFF's connect intercept (server.ts) is what keeps that
+      // process memory from ever reaching the UI.
+      // Full reload is the reliable reset: CopilotKit keeps chat state in
+      // more places than agent.messages (clearing it in place left the
+      // conversation rendered), while a fresh boot hydrates from the
+      // now-empty store and shows the welcome screen + suggestions.
+      window.location.reload();
+    } catch (err) {
+      console.error("[asistente] clear thread failed:", err);
+      toast.error("No se pudo borrar la conversación. Intenta de nuevo.");
+      setClearing(false);
+      setConfirmClear(false);
+    }
+  };
+
   useCopilotAction({
     name: "render_spending_summary",
     description:
@@ -54,20 +138,51 @@ export default function Asistente() {
   });
 
   return (
-    <div className="flex flex-col h-[calc(100vh-105px)]">
+    // Fills the viewport via Layout's flex chain (SidebarInset > main >
+    // max-w wrapper are all min-h-0 flex columns) — no vh math.
+    <div className="flex flex-1 min-h-0 flex-col">
       <div className="mb-4">
-        <h1 className="text-2xl font-bold tracking-tight flex items-center gap-2" style={{ fontFamily: "var(--font-heading)" }}>
+        <PageHeader
-          <Sparkles className="w-5 h-5 text-primary" />
+          icon={Sparkles}
-          Asistente
+          title="Asistente"
-        </h1>
+          subtitle="Pregúntale a WealthySmart sobre tus finanzas."
-        <p className="text-sm text-muted-foreground">
+          actions={
-          Pregúntale a WealthySmart sobre tus finanzas.
+            <Button
-        </p>
+              variant="outline"
+              size="sm"
+              onClick={() => setConfirmClear(true)}
+              // Also disabled mid-run: MAF saves the thread at run END, so
+              // clearing while an answer streams would delete the row only
+              // to have the finishing run write it right back.
+              disabled={!agent || agent.messages.length === 0 || agent.isRunning}
+            >
+              <MessageSquarePlus />
+              Nueva conversación
+            </Button>
+          }
+        />
       </div>
 
+      {confirmClear && (
+        <ConfirmDialog
+          title="¿Nueva conversación?"
+          message="Se borrará el historial del chat guardado. Esta acción no se puede deshacer."
+          confirmLabel="Borrar historial"
+          onConfirm={clearThread}
+          onCancel={() => setConfirmClear(false)}
+          loading={clearing}
+        />
+      )}
+
       <div className="flex-1 min-h-0 rounded-xl border border-border overflow-hidden bg-card">
         <CopilotChat
           className="h-full"
+          // Without an explicit agentId, CopilotChat resolves DEFAULT_AGENT_ID
+          // ("default") — a DIFFERENT client agent instance than
+          // useAgent({agentId:"wealthysmart"}); clearing one leaves the other
+          // rendering its own copy of the conversation.
+          agentId="wealthysmart"
+          threadId={CHAT_THREAD_ID}
           labels={{
             modalHeaderTitle: "WealthySmart",
             welcomeMessageText: "¿Qué quieres saber sobre tus finanzas?",

frontend/src/pages/Budget.tsx

@@ -5,15 +5,20 @@ import { useQuery, useQueryClient } from '@tanstack/react-query';
 import { toast } from 'sonner';
 
 import api, { type Transaction } from '@/lib/api';
-import { MONTH_NAMES_ES as MONTH_NAMES } from '@/lib/dates';
+import {
+  MONTH_NAMES_ES as MONTH_NAMES,
+  MONTH_NAMES_ES_SHORT as MONTH_NAMES_SHORT,
+} from '@/lib/dates';
 import { useBudget } from '@/hooks/useBudget';
 import { Button } from '@/components/ui/button';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
+import { PageHeader } from '@/components/page-header';
 import ErrorState from '@/components/ErrorState';
 import PeriodNavigator from '@/components/PeriodNavigator';
 import MonthlyDetail from '@/components/budget/MonthlyDetail';
 import RecurringItemsManager from '@/components/budget/RecurringItemsManager';
 import TransactionList from '@/components/TransactionList';
+import ConvertToInstallmentsDialog from '@/components/transactions/ConvertToInstallmentsDialog';
 
 
 const MIN_YEAR = 2026;
@@ -21,6 +26,17 @@ const MAX_YEAR = 2030;
 
 export default function Budget() {
   const currentYear = Math.max(MIN_YEAR, new Date().getFullYear());
+  const location = useLocation();
+  const navigate = useNavigate();
+  // Proyecciones row clicks land here with the clicked period in the state.
+  const navState = location.state as
+    | { from?: string; year?: number; month?: number }
+    | null;
+  const cameFromProyecciones = navState?.from === 'proyecciones';
+  const initialYear =
+    navState?.year && navState.year >= MIN_YEAR && navState.year <= MAX_YEAR
+      ? navState.year
+      : currentYear;
   const {
     year,
     setYear,
@@ -34,16 +50,13 @@ export default function Budget() {
     updateItem,
     deleteItem,
     refresh,
-  } = useBudget(currentYear);
+  } = useBudget(initialYear, navState?.month);
   const queryClient = useQueryClient();
-  const location = useLocation();
-  const navigate = useNavigate();
-  const cameFromProyecciones =
-    (location.state as { from?: string } | null)?.from === 'proyecciones';
 
   const [subTab, setSubTab] = useState<'detail' | 'transactions'>('detail');
   const [txSearch, setTxSearch] = useState('');
   const [txSource, setTxSource] = useState<'CREDIT_CARD' | 'CASH_AND_TRANSFER'>('CREDIT_CARD');
+  const [convertTx, setConvertTx] = useState<Transaction | null>(null);
 
   const txQuery = useQuery({
     queryKey: ['transactions', 'budget', year, selectedMonth, txSource, txSearch],
@@ -77,8 +90,17 @@ export default function Budget() {
   });
   const transactions = txQuery.data ?? [];
 
+  // Make the period explicit: budget month M on the card tab = the billing
+  // cycle 18/(M-1) → 18/M; cash/transfers use the calendar month.
+  const cyclePrevMonth = selectedMonth === 1 ? 12 : selectedMonth - 1;
+  const cycleLabel =
+    txSource === 'CREDIT_CARD'
+      ? `Ciclo 18 ${MONTH_NAMES_SHORT[cyclePrevMonth].toLowerCase()} – 18 ${MONTH_NAMES_SHORT[selectedMonth].toLowerCase()}`
+      : `Mes de ${MONTH_NAMES[selectedMonth].toLowerCase()}`;
+
   const invalidateTransactionsAndBudget = useCallback(() => {
     queryClient.invalidateQueries({ queryKey: ['transactions'] });
+    queryClient.invalidateQueries({ queryKey: ['installment-plans'] });
     refresh();
   }, [queryClient, refresh]);
 
@@ -107,12 +129,11 @@ export default function Budget() {
   return (
     <div className="space-y-6">
       {/* Header */}
-      <div className="flex items-center justify-between">
-        <div className="flex items-center gap-3">
       {cameFromProyecciones && (
         <Button
           variant="ghost"
           size="sm"
+          className="-mb-4 text-muted-foreground"
           onClick={() => navigate('/proyecciones')}
           aria-label="Volver a Proyecciones"
         >
@@ -120,9 +141,11 @@ export default function Budget() {
           Proyecciones
         </Button>
       )}
-          <Calculator className="w-6 h-6 text-primary" />
+      <PageHeader
-          <h1 className="text-2xl font-bold tracking-tight">Presupuesto</h1>
+        icon={Calculator}
-        </div>
+        title="Presupuesto"
+        subtitle="Proyección y transacciones del mes"
+        actions={
           <PeriodNavigator
             label={String(year)}
             onPrev={() => setYear(year - 1)}
@@ -130,7 +153,8 @@ export default function Budget() {
             prevDisabled={year <= MIN_YEAR}
             nextDisabled={year >= MAX_YEAR}
           />
-      </div>
+        }
+      />
 
       <Tabs defaultValue="overview">
         <TabsList>
@@ -171,27 +195,7 @@ export default function Budget() {
               )}
             </TabsContent>
 
-            <TabsContent value="transactions" className="space-y-3 mt-4">
+            <TabsContent value="transactions" className="mt-4">
-              <div className="flex items-center justify-between gap-2">
-                <Tabs
-                  value={txSource}
-                  onValueChange={(v) => setTxSource(v as typeof txSource)}
-                >
-                  <TabsList>
-                    <TabsTrigger value="CREDIT_CARD">Tarjeta</TabsTrigger>
-                    <TabsTrigger value="CASH_AND_TRANSFER">Efectivo y Transferencias</TabsTrigger>
-                  </TabsList>
-                </Tabs>
-                <Button
-                  variant="outline"
-                  size="sm"
-                  onClick={() => window.open('/api/v1/transactions/export', '_blank')}
-                  title="Descargar todas las transacciones como CSV"
-                >
-                  <Download className="w-4 h-4 mr-2" aria-hidden="true" />
-                  CSV
-                </Button>
-              </div>
               {txQuery.isError ? (
                 <ErrorState
                   message="No se pudieron cargar las transacciones"
@@ -209,6 +213,30 @@ export default function Budget() {
                 showSourceIcon={txSource === 'CASH_AND_TRANSFER'}
                 emptyMessage={`Sin transacciones de ${txSource === 'CREDIT_CARD' ? 'tarjeta' : 'efectivo o transferencia'} en ${MONTH_NAMES[selectedMonth]}`}
                 onToggleDeferred={txSource === 'CREDIT_CARD' ? handleToggleDeferred : undefined}
+                onConvertTasaCero={txSource === 'CREDIT_CARD' ? setConvertTx : undefined}
+                summaryLabel={cycleLabel}
+                toolbarLeft={
+                  <Tabs
+                    value={txSource}
+                    onValueChange={(v) => setTxSource(v as typeof txSource)}
+                  >
+                    <TabsList>
+                      <TabsTrigger value="CREDIT_CARD">Tarjeta</TabsTrigger>
+                      <TabsTrigger value="CASH_AND_TRANSFER">Efectivo y Transferencias</TabsTrigger>
+                    </TabsList>
+                  </Tabs>
+                }
+                toolbarRight={
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    onClick={() => window.open('/api/v1/transactions/export', '_blank')}
+                    title="Descargar todas las transacciones como CSV"
+                  >
+                    <Download className="w-4 h-4 mr-2" aria-hidden="true" />
+                    CSV
+                  </Button>
+                }
               />
               )}
             </TabsContent>
@@ -224,6 +252,13 @@ export default function Budget() {
           />
         </TabsContent>
       </Tabs>
+
+      <ConvertToInstallmentsDialog
+        open={convertTx !== null}
+        onOpenChange={(open) => !open && setConvertTx(null)}
+        onSaved={invalidateTransactionsAndBudget}
+        tx={convertTx}
+      />
     </div>
   );
 }

frontend/src/pages/Financiamientos.tsx

@@ -0,0 +1,220 @@
+import { useState } from 'react';
+import { Layers } from 'lucide-react';
+import { useQuery, useQueryClient } from '@tanstack/react-query';
+
+import {
+  getInstallmentPlans,
+  type InstallmentPlan,
+} from '@/lib/api';
+import { formatAmount } from '@/lib/format';
+import { cn } from '@/lib/utils';
+import { Badge } from '@/components/ui/badge';
+import { Progress } from '@/components/ui/progress';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from '@/components/ui/table';
+import ErrorState from '@/components/ErrorState';
+import { PageHeader } from '@/components/page-header';
+import ConvertToInstallmentsDialog from '@/components/transactions/ConvertToInstallmentsDialog';
+
+function formatDate(iso: string) {
+  return new Date(iso).toLocaleDateString('es-CR', {
+    day: 'numeric',
+    month: 'short',
+    year: 'numeric',
+  });
+}
+
+function CuotasProgress({ plan }: { plan: InstallmentPlan }) {
+  const pct = (plan.cuotas_billed / plan.num_installments) * 100;
+  return (
+    <div className="flex items-center gap-2">
+      <Progress
+        value={pct}
+        className="w-16"
+        aria-label={`${plan.cuotas_billed} de ${plan.num_installments} cuotas pagadas`}
+      />
+      <span className="font-mono text-xs text-muted-foreground whitespace-nowrap">
+        {plan.cuotas_billed}/{plan.num_installments}
+      </span>
+    </div>
+  );
+}
+
+export default function Financiamientos() {
+  const queryClient = useQueryClient();
+  const [editing, setEditing] = useState<InstallmentPlan | null>(null);
+
+  const plansQ = useQuery({
+    queryKey: ['installment-plans'],
+    queryFn: () => getInstallmentPlans().then((r) => r.data),
+  });
+
+  const plans = plansQ.data?.plans ?? [];
+  const active = plans.filter((p) => !p.is_completed);
+  const completed = plans.filter((p) => p.is_completed);
+  const totalRemaining = plansQ.data?.total_remaining ?? 0;
+  const totalCuotaMes = active.reduce((sum, p) => sum + p.installment_amount, 0);
+
+  const handleSaved = () => {
+    queryClient.invalidateQueries({ queryKey: ['installment-plans'] });
+    queryClient.invalidateQueries({ queryKey: ['transactions'] });
+    queryClient.invalidateQueries({ queryKey: ['budget'] });
+  };
+
+  const renderRows = (rows: InstallmentPlan[]) =>
+    rows.map((plan) => (
+      <TableRow
+        key={plan.id}
+        tabIndex={0}
+        role="button"
+        aria-label={`Editar plan de ${plan.merchant}`}
+        className={cn(
+          'cursor-pointer focus-visible:outline-2 focus-visible:outline-ring',
+          plan.is_completed && 'opacity-60',
+        )}
+        onClick={() => setEditing(plan)}
+        onKeyDown={(e) => {
+          if (e.key === 'Enter' || e.key === ' ') {
+            e.preventDefault();
+            setEditing(plan);
+          }
+        }}
+      >
+        <TableCell className="font-medium">
+          <div className="flex items-center gap-2">
+            <span className="truncate">{plan.merchant}</span>
+            {plan.is_completed && (
+              <Badge variant="outline" className="text-[10px] px-1 py-0 shrink-0">
+                Completado
+              </Badge>
+            )}
+          </div>
+        </TableCell>
+        <TableCell className="text-muted-foreground whitespace-nowrap">
+          {formatDate(plan.purchase_date)}
+        </TableCell>
+        <TableCell>
+          <CuotasProgress plan={plan} />
+        </TableCell>
+        <TableCell className="text-right font-mono" data-sensitive>
+          {formatAmount(plan.installment_amount, plan.currency)}
+        </TableCell>
+        <TableCell className="text-right font-mono" data-sensitive>
+          {formatAmount(plan.total_amount, plan.currency)}
+        </TableCell>
+        <TableCell className="text-right font-mono font-medium" data-sensitive>
+          {formatAmount(plan.remaining_amount, plan.currency)}
+        </TableCell>
+        <TableCell className="text-muted-foreground whitespace-nowrap">
+          {plan.next_cuota_date ? formatDate(plan.next_cuota_date) : '—'}
+        </TableCell>
+      </TableRow>
+    ));
+
+  return (
+    <div className="space-y-6">
+      <PageHeader
+        icon={Layers}
+        title="Financiamientos"
+        subtitle="Compras Tasa Cero en cuotas sin intereses — las cuotas futuras ya cuentan en el presupuesto de sus meses."
+      />
+
+      {/* Summary */}
+      <div className="grid gap-4 sm:grid-cols-3">
+        <Card>
+          <CardHeader className="pb-2">
+            <CardTitle className="text-sm font-medium text-muted-foreground">
+              Saldo faltante total
+            </CardTitle>
+          </CardHeader>
+          <CardContent>
+            <span data-sensitive className="text-2xl font-bold font-mono">
+              {formatAmount(totalRemaining, 'CRC')}
+            </span>
+          </CardContent>
+        </Card>
+        <Card>
+          <CardHeader className="pb-2">
+            <CardTitle className="text-sm font-medium text-muted-foreground">
+              Cuotas por mes (activos)
+            </CardTitle>
+          </CardHeader>
+          <CardContent>
+            <span data-sensitive className="text-2xl font-bold font-mono">
+              {formatAmount(totalCuotaMes, 'CRC')}
+            </span>
+          </CardContent>
+        </Card>
+        <Card>
+          <CardHeader className="pb-2">
+            <CardTitle className="text-sm font-medium text-muted-foreground">
+              Planes activos
+            </CardTitle>
+          </CardHeader>
+          <CardContent>
+            <span className="text-2xl font-bold font-mono">{active.length}</span>
+            {completed.length > 0 && (
+              <span className="ml-2 text-sm text-muted-foreground">
+                (+{completed.length} completado{completed.length === 1 ? '' : 's'})
+              </span>
+            )}
+          </CardContent>
+        </Card>
+      </div>
+
+      {/* Plans table */}
+      {plansQ.isError ? (
+        <ErrorState
+          message="No se pudieron cargar los financiamientos"
+          onRetry={() => plansQ.refetch()}
+        />
+      ) : (
+        <Card>
+          <CardContent className="p-0 overflow-x-auto">
+            {plans.length === 0 && !plansQ.isPending ? (
+              <div className="px-5 py-16 text-center text-muted-foreground text-sm">
+                <Layers className="w-8 h-8 mx-auto mb-3 text-muted-foreground/50" />
+                <p>
+                  Sin financiamientos. Convertí una compra de tarjeta a Tasa
+                  Cero desde la lista de transacciones.
+                </p>
+              </div>
+            ) : (
+              <Table>
+                <TableHeader>
+                  <TableRow>
+                    <TableHead>Comercio</TableHead>
+                    <TableHead>Fecha compra</TableHead>
+                    <TableHead>Cuotas</TableHead>
+                    <TableHead className="text-right">Monto cuota</TableHead>
+                    <TableHead className="text-right">Saldo inicial</TableHead>
+                    <TableHead className="text-right">Saldo faltante</TableHead>
+                    <TableHead>Próxima cuota</TableHead>
+                  </TableRow>
+                </TableHeader>
+                <TableBody>
+                  {renderRows(active)}
+                  {renderRows(completed)}
+                </TableBody>
+              </Table>
+            )}
+          </CardContent>
+        </Card>
+      )}
+
+      <ConvertToInstallmentsDialog
+        open={editing !== null}
+        onOpenChange={(open) => !open && setEditing(null)}
+        onSaved={handleSaved}
+        plan={editing}
+      />
+    </div>
+  );
+}

frontend/src/pages/Inicio.tsx

@@ -0,0 +1,349 @@
+import { useState } from "react";
+import { Link, useNavigate } from "react-router-dom";
+import { ArrowRight, Home, Sparkles } from "lucide-react";
+import { useQuery } from "@tanstack/react-query";
+
+import {
+  getInstallmentPlans,
+  getMonthlyDetail,
+  getPensionFundSummary,
+  getRecentTransactions,
+} from "@/lib/api";
+import { formatAmount } from "@/lib/format";
+import {
+  MONTH_NAMES_ES_SHORT,
+  currentBudgetCycle,
+  formatShortDate,
+} from "@/lib/dates";
+import { cn } from "@/lib/utils";
+import { PageHeader } from "@/components/page-header";
+import { StatTile } from "@/components/stat-tile";
+import { Button } from "@/components/ui/button";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { Input } from "@/components/ui/input";
+import { Skeleton } from "@/components/ui/skeleton";
+
+const CYCLE = currentBudgetCycle();
+
+const SOURCE_LABELS: Record<string, string> = {
+  CREDIT_CARD: "Tarjeta",
+  CASH: "Efectivo",
+  TRANSFER: "Transferencias",
+};
+
+function HoverRows({
+  title,
+  rows,
+}: {
+  title: string;
+  rows: { label: string; value: string }[];
+}) {
+  return (
+    <div className="space-y-1.5">
+      <p className="text-sm font-medium">{title}</p>
+      <div className="space-y-1">
+        {rows.map((r) => (
+          <div key={r.label} className="flex justify-between gap-3 text-xs">
+            <span className="text-muted-foreground truncate">{r.label}</span>
+            <span data-sensitive className="font-mono shrink-0">
+              {r.value}
+            </span>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}
+
+function GastoDelCicloCard() {
+  const q = useQuery({
+    queryKey: ["budget", "month", CYCLE.year, CYCLE.month],
+    queryFn: () =>
+      getMonthlyDetail(CYCLE.year, CYCLE.month).then((r) => r.data),
+  });
+  const spend = q.data
+    ? q.data.actuals_by_source.reduce((sum, a) => sum + a.net, 0)
+    : null;
+  const balance = q.data?.net_balance ?? null;
+
+  return (
+    <StatTile
+      label="Gasto del ciclo"
+      description={`Ciclo al 18 ${MONTH_NAMES_ES_SHORT[CYCLE.month].toLowerCase()}`}
+      value={q.isError || spend === null ? null : formatAmount(spend, "CRC")}
+      loading={q.isPending}
+      to="/budget"
+      ariaLabel="Ver presupuesto"
+      hoverContent={
+        q.data ? (
+          <HoverRows
+            title="Desglose por fuente"
+            rows={[
+              ...q.data.actuals_by_source
+                .filter((s) => s.count > 0)
+                .map((s) => ({
+                  label: `${SOURCE_LABELS[s.source] ?? s.source} (${s.count})`,
+                  value: formatAmount(s.net, "CRC"),
+                })),
+              {
+                label: "Gran total egresos",
+                value: formatAmount(q.data.gran_total_egresos, "CRC"),
+              },
+            ]}
+          />
+        ) : undefined
+      }
+    >
+      {balance !== null && (
+        <p className="text-xs text-muted-foreground">
+          Balance proyectado:{" "}
+          <span
+            data-sensitive
+            className={cn(
+              "font-mono font-medium",
+              balance >= 0 ? "text-primary" : "text-destructive",
+            )}
+          >
+            {balance >= 0 ? "+" : "-"}
+            {formatAmount(balance, "CRC")}
+          </span>
+        </p>
+      )}
+      {q.isError && (
+        <p className="text-xs text-muted-foreground">
+          No se pudo cargar el ciclo.
+        </p>
+      )}
+    </StatTile>
+  );
+}
+
+function ProximasCuotasCard() {
+  const q = useQuery({
+    queryKey: ["installment-plans"],
+    queryFn: () => getInstallmentPlans().then((r) => r.data),
+  });
+  const active = (q.data?.plans ?? []).filter(
+    (p) => !p.is_completed && p.next_cuota_date,
+  );
+  // One cuota per plan per cycle, so the sum of every active plan's next
+  // cuota is the load of the upcoming billing batch (next 19th). The last
+  // cuota absorbs BAC's rounding, so use it when it's the one pending.
+  const nextCuotaOf = (p: (typeof active)[number]) =>
+    p.cuotas_billed === p.num_installments - 1
+      ? p.last_installment_amount
+      : p.installment_amount;
+  const nextBatchTotal = active.reduce((s, p) => s + nextCuotaOf(p), 0);
+  const upcoming = [...active].sort(
+    (a, b) =>
+      new Date(a.next_cuota_date!).getTime() -
+      new Date(b.next_cuota_date!).getTime(),
+  );
+  const nextDate = upcoming[0]?.next_cuota_date;
+  const topThree = upcoming.slice(0, 3);
+
+  return (
+    <StatTile
+      label="Próximas cuotas"
+      description={
+        nextDate
+          ? `Tasa Cero · próximo cobro ${formatShortDate(nextDate)}`
+          : "Tasa Cero"
+      }
+      value={q.isError ? null : formatAmount(nextBatchTotal, "CRC")}
+      loading={q.isPending}
+      to="/financiamientos"
+      ariaLabel="Ver financiamientos"
+      hoverContent={
+        upcoming.length > 0 ? (
+          <HoverRows
+            title="Planes activos"
+            rows={upcoming.map((p) => ({
+              label: `${p.merchant} (${p.cuotas_billed}/${p.num_installments})`,
+              value: `${formatShortDate(p.next_cuota_date!)} · ${formatAmount(nextCuotaOf(p), p.currency)}`,
+            }))}
+          />
+        ) : undefined
+      }
+    >
+      {topThree.length > 0 && (
+        <ul className="space-y-0.5 text-xs text-muted-foreground">
+          {topThree.map((p) => (
+            <li key={p.id} className="flex justify-between gap-2">
+              <span className="truncate">{p.merchant}</span>
+              <span data-sensitive className="font-mono shrink-0">
+                {formatShortDate(p.next_cuota_date!)} ·{" "}
+                {formatAmount(nextCuotaOf(p), p.currency)}
+              </span>
+            </li>
+          ))}
+        </ul>
+      )}
+      {q.data && (
+        <p className="text-xs text-muted-foreground">
+          Restante total:{" "}
+          <span data-sensitive className="font-mono font-medium">
+            {formatAmount(q.data.total_remaining, "CRC")}
+          </span>
+        </p>
+      )}
+    </StatTile>
+  );
+}
+
+function PensionCard() {
+  const q = useQuery({
+    queryKey: ["pension-fund-summary"],
+    queryFn: () => getPensionFundSummary().then((r) => r.data),
+  });
+  const total = q.data ? q.data.reduce((s, f) => s + f.saldo_final, 0) : null;
+
+  return (
+    <StatTile
+      label="Pensión"
+      description="Saldo total de fondos"
+      value={q.isError || total === null ? null : formatAmount(total, "CRC")}
+      loading={q.isPending}
+      to="/pensions"
+      ariaLabel="Ver pensiones"
+      hoverContent={
+        q.data && q.data.length > 0 ? (
+          <HoverRows
+            title="Último período por fondo"
+            rows={q.data.map((f) => ({
+              label: `${f.fund} · rendimientos`,
+              value: `+${formatAmount(f.rendimientos, "CRC")}`,
+            }))}
+          />
+        ) : undefined
+      }
+    >
+      {q.data && q.data.length > 0 && (
+        <ul className="space-y-0.5 text-xs text-muted-foreground">
+          {q.data.map((f) => (
+            <li key={f.fund} className="flex justify-between gap-2">
+              <span>{f.fund}</span>
+              <span data-sensitive className="font-mono">
+                {formatAmount(f.saldo_final, "CRC")}
+              </span>
+            </li>
+          ))}
+        </ul>
+      )}
+    </StatTile>
+  );
+}
+
+function AskAssistantCard() {
+  const [question, setQuestion] = useState("");
+  const navigate = useNavigate();
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault();
+    const ask = question.trim();
+    navigate("/asistente", ask ? { state: { ask } } : undefined);
+  };
+
+  return (
+    <Card>
+      <CardContent className="pt-6">
+        <form onSubmit={handleSubmit} className="flex items-center gap-3">
+          <Sparkles className="w-5 h-5 text-primary shrink-0" aria-hidden />
+          <Input
+            value={question}
+            onChange={(e) => setQuestion(e.target.value)}
+            placeholder="¿Cuánto gasté este ciclo?"
+            aria-label="Pregúntale al asistente"
+            className="flex-1"
+          />
+          <Button type="submit">Preguntar</Button>
+        </form>
+      </CardContent>
+    </Card>
+  );
+}
+
+function RecentTransactionsCard() {
+  const q = useQuery({
+    queryKey: ["transactions", "recent"],
+    queryFn: () => getRecentTransactions(5).then((r) => r.data),
+  });
+
+  return (
+    <Card>
+      <CardHeader className="flex flex-row items-center justify-between pb-2">
+        <CardTitle className="text-sm font-medium text-muted-foreground">
+          Últimas transacciones
+        </CardTitle>
+        <Link
+          to="/budget"
+          className="flex items-center gap-1 text-xs text-primary hover:underline focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring rounded"
+        >
+          Ver todo
+          <ArrowRight className="w-3 h-3" aria-hidden />
+        </Link>
+      </CardHeader>
+      <CardContent>
+        {q.isPending ? (
+          <div className="space-y-2">
+            {Array.from({ length: 5 }, (_, i) => (
+              <Skeleton key={i} className="h-6 w-full" />
+            ))}
+          </div>
+        ) : q.isError ? (
+          <p className="text-sm text-muted-foreground">
+            No se pudieron cargar las transacciones.
+          </p>
+        ) : (
+          <ul className="divide-y divide-border">
+            {(q.data ?? []).map((tx) => (
+              <li
+                key={tx.id}
+                className="flex items-center justify-between gap-3 py-2 text-sm"
+              >
+                <span className="truncate">{tx.merchant}</span>
+                <span className="flex items-center gap-3 shrink-0">
+                  <span className="text-xs text-muted-foreground">
+                    {formatShortDate(tx.date)}
+                  </span>
+                  <span
+                    data-sensitive
+                    className={cn(
+                      "font-mono",
+                      tx.transaction_type !== "COMPRA" && "text-primary",
+                    )}
+                  >
+                    {tx.transaction_type === "COMPRA" ? "-" : "+"}
+                    {formatAmount(tx.amount, tx.currency)}
+                  </span>
+                </span>
+              </li>
+            ))}
+          </ul>
+        )}
+      </CardContent>
+    </Card>
+  );
+}
+
+export default function Inicio() {
+  return (
+    <div className="space-y-6">
+      <PageHeader
+        icon={Home}
+        title="Inicio"
+        subtitle="Tu panorama financiero de hoy."
+      />
+
+      <div className="grid gap-4 md:grid-cols-3">
+        <GastoDelCicloCard />
+        <ProximasCuotasCard />
+        <PensionCard />
+      </div>
+
+      <AskAssistantCard />
+
+      <RecentTransactionsCard />
+    </div>
+  );
+}

frontend/src/pages/Login.tsx

@@ -23,7 +23,7 @@ export default function LoginPage() {
     try {
       await login(username, password);
       setAuthenticated(true);
-      navigate("/asistente", { replace: true });
+      navigate("/", { replace: true });
     } catch {
       setError("Invalid credentials");
     } finally {

frontend/src/pages/Pensions.tsx

@@ -1,6 +1,7 @@
 import { useState, useMemo, useCallback, useRef } from 'react';
 import { useQuery } from '@tanstack/react-query';
 import ErrorState from '@/components/ErrorState';
+import { PageHeader } from '@/components/page-header';
 import PensionAssumptionsDialog, { type PensionAssumptions } from '@/components/PensionAssumptionsDialog';
 import {
   LineChart,
@@ -84,7 +85,17 @@ interface TooltipEntry {
 
 // ─── Constants ────────────────────────────────────────────────────────────────
 
-const CURRENT_AGE = 30;
+const BIRTH_DATE = new Date(1988, 7, 29); // 29 de agosto de 1988
+
+function computeCurrentAge(): number {
+  const now = new Date();
+  const hadBirthdayThisYear =
+    now.getMonth() > BIRTH_DATE.getMonth() ||
+    (now.getMonth() === BIRTH_DATE.getMonth() && now.getDate() >= BIRTH_DATE.getDate());
+  return now.getFullYear() - BIRTH_DATE.getFullYear() - (hadBirthdayThisYear ? 0 : 1);
+}
+
+const CURRENT_AGE = computeCurrentAge();
 
 const FUND_KEYS: FundKey[] = ['FCL', 'ROP', 'VOL'];
 
@@ -93,19 +104,19 @@ const FUNDS_DEFAULT: Record<FundKey, FundDef> = {
     key: 'FCL',
     name: 'FCL',
     fullName: 'Fondo de Capitalización Laboral',
-    color: '#3b82f6',
+    color: 'var(--chart-5)',
     startBalance: 650_468,
     monthlyContribution: 150_000,
     annualRate: 7.5,
     isDividend: false,
     withdrawalRule: 'Retirable cada 5 años o al cambio de empleo',
-    defaultTargetAge: 35,
+    defaultTargetAge: CURRENT_AGE + 5,
   },
   ROP: {
     key: 'ROP',
     name: 'ROP',
     fullName: 'Régimen Obligatorio de Pensiones',
-    color: '#10b981',
+    color: 'var(--chart-1)',
     startBalance: 18_684_765,
     monthlyContribution: 120_000,
     annualRate: 6.0,
@@ -117,7 +128,7 @@ const FUNDS_DEFAULT: Record<FundKey, FundDef> = {
     key: 'VOL',
     name: 'VOL',
     fullName: 'Fondo Voluntario',
-    color: '#f43f5e',
+    color: 'var(--chart-4)',
     startBalance: 2_500_381,
     monthlyContribution: 400_000,
     annualRate: 8.0,
@@ -255,7 +266,7 @@ const EMPTY_SNAPSHOTS: PensionSnapshot[] = [];
 export default function Pensions() {
   const [visibleFunds, setVisibleFunds] = useState<Set<FundKey>>(new Set(FUND_KEYS));
   const [projections, setProjections] = useState<Record<FundKey, ProjectionState>>({
-    FCL: { contribution: 150_000, rate: 7.5, targetAge: 35 },
+    FCL: { contribution: 150_000, rate: 7.5, targetAge: CURRENT_AGE + 5 },
     ROP: { contribution: 120_000, rate: 6.0, targetAge: 65 },
     VOL: { contribution: 400_000, rate: 8.0, targetAge: 57 },
   });
@@ -470,17 +481,11 @@ export default function Pensions() {
         />
       )}
       {/* ── Page Header ─────────────────────────────────────────────────── */}
-      <div className="flex items-center gap-3">
+      <PageHeader
-        <div className="w-10 h-10 rounded-lg bg-primary/10 flex items-center justify-center">
+        icon={PiggyBank}
-          <PiggyBank className="w-5 h-5 text-primary" />
+        title="Pensiones"
-        </div>
+        subtitle="Seguimiento de aportes, rendimientos y proyecciones"
-        <div>
+      />
-          <h1 className="text-2xl font-bold font-heading">Pensiones</h1>
-          <p className="text-sm text-muted-foreground">
-            Seguimiento de aportes, rendimientos y proyecciones
-          </p>
-        </div>
-      </div>
 
       {/* ── Section 1: Fund Overview Cards ──────────────────────────────── */}
       <section className="space-y-3">
@@ -596,7 +601,7 @@ export default function Pensions() {
                     className="flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-medium transition-all border cursor-pointer focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
                     style={{
                       borderColor: fund.color,
-                      background: active ? fund.color + '22' : 'transparent',
+                      background: active ? `color-mix(in oklab, ${fund.color} 13%, transparent)` : 'transparent',
                       color: active ? fund.color : 'var(--muted-foreground)',
                     }}
                   >
@@ -642,6 +647,7 @@ export default function Pensions() {
                       stroke={FUNDS[key].color}
                       strokeWidth={2}
                       dot={false}
+                      isAnimationActive={false}
                       activeDot={{ r: 4 }}
                     />
                   ) : null,

frontend/src/pages/Planificador.tsx

@@ -4,6 +4,8 @@ import { Line, LineChart, XAxis, YAxis } from 'recharts';
 import { Telescope } from 'lucide-react';
 
 import { getYearlyProjection } from '@/lib/api';
+import { PageHeader } from '@/components/page-header';
+import { StatTile } from '@/components/stat-tile';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
@@ -78,15 +80,11 @@ export default function Planificador() {
 
   return (
     <div className="space-y-6">
-      <div className="flex items-center gap-3">
+      <PageHeader
-        <Telescope className="w-6 h-6 text-primary" aria-hidden="true" />
+        icon={Telescope}
-        <div>
+        title="Planificador"
-          <h1 className="text-2xl font-bold tracking-tight">Planificador</h1>
+        subtitle="¿Qué pasa si ahorrás un poco más cada mes?"
-          <p className="text-sm text-muted-foreground">
+      />
-            ¿Qué pasa si ahorrás un poco más cada mes?
-          </p>
-        </div>
-      </div>
 
       <Card>
         <CardContent className="p-4 grid grid-cols-2 lg:grid-cols-4 gap-4">
@@ -138,41 +136,18 @@ export default function Planificador() {
       </Card>
 
       <div className="grid grid-cols-1 sm:grid-cols-3 gap-4">
-        <Card>
+        <StatTile label="Ritmo actual" value={formatCRC(baselineEnd)} />
-          <CardContent className="p-4">
+        <StatTile label="Escenario" value={formatCRC(scenarioEnd)} />
-            <p className="text-xs text-muted-foreground uppercase tracking-wider">
+        <StatTile
-              Ritmo actual
+          label="Diferencia"
-            </p>
+          value={`+${formatCRC(scenarioEnd - baselineEnd)}`}
-            <p data-sensitive className="text-xl font-bold font-mono">
+          className="[&_span[data-sensitive]]:text-primary"
-              {formatCRC(baselineEnd)}
+        />
-            </p>
-          </CardContent>
-        </Card>
-        <Card>
-          <CardContent className="p-4">
-            <p className="text-xs text-muted-foreground uppercase tracking-wider">
-              Escenario
-            </p>
-            <p data-sensitive className="text-xl font-bold font-mono text-primary">
-              {formatCRC(scenarioEnd)}
-            </p>
-          </CardContent>
-        </Card>
-        <Card>
-          <CardContent className="p-4">
-            <p className="text-xs text-muted-foreground uppercase tracking-wider">
-              Diferencia
-            </p>
-            <p data-sensitive className="text-xl font-bold font-mono text-emerald-500">
-              +{formatCRC(scenarioEnd - baselineEnd)}
-            </p>
-          </CardContent>
-        </Card>
       </div>
 
       <Card>
         <CardHeader>
-          <CardTitle className="text-sm uppercase tracking-wider text-muted-foreground">
+          <CardTitle className="text-sm font-medium text-muted-foreground">
             Crecimiento comparado
           </CardTitle>
         </CardHeader>
@@ -191,8 +166,8 @@ export default function Planificador() {
                   <ChartTooltipContent formatter={(value) => formatCRC(Number(value))} />
                 }
               />
-              <Line type="monotone" dataKey="baseline" stroke="var(--chart-2)" dot={false} strokeWidth={2} />
+              <Line type="monotone" dataKey="baseline" stroke="var(--chart-2)" dot={false} strokeWidth={2} isAnimationActive={false} />
-              <Line type="monotone" dataKey="scenario" stroke="var(--chart-1)" dot={false} strokeWidth={2} />
+              <Line type="monotone" dataKey="scenario" stroke="var(--chart-1)" dot={false} strokeWidth={2} isAnimationActive={false} />
             </LineChart>
           </ChartContainer>
           <p className="text-xs text-muted-foreground mt-2">

frontend/src/pages/Proyecciones.tsx

@@ -5,6 +5,7 @@ import { useBudget } from '@/hooks/useBudget';
 import { formatAmount } from '@/lib/format';
 import { cn } from '@/lib/utils';
 import { Card, CardContent } from '@/components/ui/card';
+import { PageHeader } from '@/components/page-header';
 import ErrorState from '@/components/ErrorState';
 import PeriodNavigator from '@/components/PeriodNavigator';
 import YearlyOverview from '@/components/budget/YearlyOverview';
@@ -30,12 +31,11 @@ export default function Proyecciones() {
 
   return (
     <div className="space-y-6">
-      {/* Header */}
+      <PageHeader
-      <div className="flex items-center justify-between">
+        icon={TrendingUp}
-        <div className="flex items-center gap-3">
+        title="Proyecciones"
-          <TrendingUp className="w-6 h-6 text-primary" />
+        subtitle="Presupuesto anual mes a mes"
-          <h1 className="text-2xl font-bold tracking-tight">Proyecciones</h1>
+        actions={
-        </div>
           <PeriodNavigator
             label={String(year)}
             onPrev={() => setYear(year - 1)}
@@ -43,7 +43,8 @@ export default function Proyecciones() {
             prevDisabled={year <= MIN_YEAR}
             nextDisabled={year >= MAX_YEAR}
           />
-      </div>
+        }
+      />
 
       {/* Annual summary cards */}
       {projection && (
@@ -99,7 +100,9 @@ export default function Proyecciones() {
               year={year}
               onSelectMonth={(m) => {
                 setSelectedMonth(m);
-                navigate('/budget', { state: { from: 'proyecciones' } });
+                navigate('/budget', {
+                  state: { from: 'proyecciones', year, month: m },
+                });
               }}
               onSaveOverride={async (month, value) => {
                 await saveBalanceOverride(year, month, value);

frontend/src/pages/Salarios.tsx

@@ -1,18 +1,22 @@
-import { useMemo } from 'react';
+import { useMemo, useState } from 'react';
 import { useQuery } from '@tanstack/react-query';
 import { type ColumnDef } from '@tanstack/react-table';
-import { Landmark, RefreshCw, Hash, CalendarDays, Banknote, Download } from 'lucide-react';
+import { Landmark, RefreshCw, Download, Plus } from 'lucide-react';
 
-import { type Transaction, type SalariosSummary, getSalarios, getSalariosSummary } from '@/lib/api';
+import { type Transaction, getSalarios, getSalariosSummary } from '@/lib/api';
 import { formatAmount, formatDate } from '@/lib/format';
 import ErrorState from '@/components/ErrorState';
+import { PageHeader } from '@/components/page-header';
+import { StatTile } from '@/components/stat-tile';
 import { DataTable } from '@/components/ui/data-table';
 import { DataTableColumnHeader } from '@/components/ui/data-table-column-header';
 import { Card, CardContent } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
+import SalaryEntryDialog from '@/components/SalaryEntryDialog';
 
 export default function Salarios() {
+  const [entryOpen, setEntryOpen] = useState(false);
   const query = useQuery({
     queryKey: ['salarios'],
     queryFn: async () => {
@@ -87,17 +91,16 @@ export default function Salarios() {
 
   return (
     <div className="space-y-6">
-      {/* Header */}
+      <PageHeader
-      <div className="flex items-center justify-between">
+        icon={Landmark}
-        <div className="flex items-center gap-3">
+        title="Salarios"
-          <div className="w-10 h-10 rounded-lg bg-primary/10 flex items-center justify-center">
+        subtitle="Historial de depósitos salariales"
-            <Landmark className="w-5 h-5 text-primary" />
+        actions={
-          </div>
+          <>
-          <div>
+            <Button size="sm" onClick={() => setEntryOpen(true)}>
-            <h1 className="text-2xl font-bold font-heading">Salarios</h1>
+              <Plus className="w-4 h-4 mr-2" aria-hidden="true" />
-            <p className="text-sm text-muted-foreground">Historial de depósitos salariales</p>
+              Registrar salario
-          </div>
+            </Button>
-        </div>
             <Button
               variant="outline"
               size="sm"
@@ -110,44 +113,30 @@ export default function Salarios() {
             <Button variant="ghost" size="icon" onClick={fetchData} title="Refresh" aria-label="Refresh">
               <RefreshCw className={loading ? 'w-4 h-4 animate-spin' : 'w-4 h-4'} />
             </Button>
-      </div>
+          </>
+        }
+      />
 
-      {/* Summary cards */}
+      {/* Summary tiles */}
-      {summary && (
       <div className="grid grid-cols-1 sm:grid-cols-3 gap-4">
-          <Card>
+        <StatTile
-            <CardContent className="p-4">
+          label="Depósitos"
-              <div className="flex items-center gap-2 text-muted-foreground mb-1">
+          value={summary ? String(summary.count) : null}
-                <Hash className="w-4 h-4" />
+          loading={query.isPending}
-                <span className="text-xs font-medium uppercase tracking-wider">Depósitos</span>
+          sensitive={false}
+        />
+        <StatTile
+          label="Total acumulado"
+          value={summary ? formatAmount(summary.total_amount, 'CRC') : null}
+          loading={query.isPending}
+        />
+        <StatTile
+          label="Último depósito"
+          value={summary?.latest_date ? formatDate(summary.latest_date) : null}
+          loading={query.isPending}
+          sensitive={false}
+        />
       </div>
-              <span className="text-2xl font-bold font-mono">{summary.count}</span>
-            </CardContent>
-          </Card>
-          <Card>
-            <CardContent className="p-4">
-              <div className="flex items-center gap-2 text-muted-foreground mb-1">
-                <Banknote className="w-4 h-4" />
-                <span className="text-xs font-medium uppercase tracking-wider">Total acumulado</span>
-              </div>
-              <span data-sensitive className="text-2xl font-bold font-mono text-primary">
-                {formatAmount(summary.total_amount, 'CRC')}
-              </span>
-            </CardContent>
-          </Card>
-          <Card>
-            <CardContent className="p-4">
-              <div className="flex items-center gap-2 text-muted-foreground mb-1">
-                <CalendarDays className="w-4 h-4" />
-                <span className="text-xs font-medium uppercase tracking-wider">Último depósito</span>
-              </div>
-              <span className="text-2xl font-bold font-mono">
-                {summary.latest_date ? formatDate(summary.latest_date) : '—'}
-              </span>
-            </CardContent>
-          </Card>
-        </div>
-      )}
 
       {/* Data table */}
       {query.isError ? (
@@ -169,6 +158,12 @@ export default function Salarios() {
           </CardContent>
         </Card>
       )}
+      {entryOpen && (
+        <SalaryEntryDialog
+          onClose={() => setEntryOpen(false)}
+          onSaved={() => { void query.refetch(); }}
+        />
+      )}
     </div>
   );
 }