Models use Money = Annotated[Decimal, PlainSerializer(float)] so storage
is exact NUMERIC(15,2) (rates 15,6) while JSON keeps emitting plain
numbers — the frontend contract is unchanged, pinned by
test_models_serialization.py. Service layers coerce to float at their
boundaries (projection math, rate multipliers, agent tool output, the
savings constants become Decimal) so no naive Decimal/float mixing can
raise. Migration 7f567c8bafdb applied to dev: per-row values and the
table sum byte-identical before/after; endpoints verified live on the
new schema. 59/59 tests green.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Ahorro was already deducted from gross salary so displaying it in
budget projections was misleading. This removes the Ahorro card,
summary line, Proyecciones column, and Ahorro Anual card from the UI,
and strips all savings fields from budget API responses.
Adds SALARY TransactionType so salary deposits can be distinguished
from generic DEPOSITO transfers. When a SALARY transaction arrives,
the system auto-increments MEMP and MPAT savings account balances
(+200K CRC each) once per month via an idempotent accrual log.
New CRUD endpoints at /api/v1/savings-accrual/ allow manual correction
of the accrual history. Feb+Mar 2026 are seeded as historical baseline.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
