Add DEPOSITO transaction type and Salarios page

New TransactionType.DEPOSITO for salary deposits from n8n/Gmail flow.
New /salarios endpoint with summary. New top-level Salarios page with
DataTable and summary cards. Push notifications link to /salarios for
deposits.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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

@@ -15,6 +15,7 @@ from app.models.models import (
     TransactionCreate,
     TransactionRead,
     TransactionSource,
+    TransactionType,
     TransactionUpdate,
 )
 
@@ -183,11 +184,12 @@ def create_transaction(
     # Send push notification
     symbol = "₡" if tx.currency == Currency.CRC else tx.currency.value
     amount_str = f"{symbol}{tx.amount:,.0f}" if tx.currency == Currency.CRC else f"{symbol}{tx.amount:,.2f}"
+    is_deposit = tx.transaction_type == TransactionType.DEPOSITO
     send_push_to_all(
         session,
-        title=f"💳 {tx.merchant}",
-        body=f"{amount_str} — {tx.bank.value} {tx.transaction_type.value.lower()}",
-        url=f"/budget",
+        title=f"{'🏦' if is_deposit else '💳'} {tx.merchant}",
+        body=f"{amount_str} — {tx.bank.value} {'depósito' if is_deposit else tx.transaction_type.value.lower()}",
+        url="/salarios" if is_deposit else "/budget",
     )
 
     return tx