- FK rules via migration 7884505b16b3 (verified on dev with a rolled-
back probe): transactions/recurring items SET NULL on category delete
(this also fixes the 500 that DELETE /categories raised for in-use
categories), water readings CASCADE with their receipt. Models declare
ondelete to stay in sync. (ARCH-09, BE-11)
- compute_actuals_by_source: 3 grouped queries replace 10 single-
aggregate round-trips; behavior pinned by the existing cycle suite.
(BE-21)
- compute_cc_by_category prefetches category names (ARCH-15); agent
pension latest-per-fund resolved in SQL (BE-04); municipal water
consumption batched into one grouped query (BE-05).
- Deterministic pagination: date DESC, id DESC on all transaction
listings. (ARCH-12)
- New agent-tool tests (session binding, JSON-safe output, batched
queries): 64 tests green.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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>
Covers: billing-cycle characterization (the BE-06 convention, boundary
instants, year wraps, deferred transactions), projection engine
(recurring schedules, no-double-count, cumulative balances, overrides,
fresh start), auth (JWT roundtrip/expiry, API tokens, constant-time
creds, rate-limit window), fail-fast settings, and the BAC paste
parser. SQLite in-memory fixtures, exchange rates pinned — no network.
Also doubles as the float-behavior baseline for the Phase 2 Decimal
migration (plan 1.5). config.py moves to SettingsConfigDict to clear
the pydantic deprecation warning from test output.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
