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74886fbf98
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>
WealthySmart
A financial management application