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Marc-André Bombeck
f8f460bb66
Migration 0263 added three columns beside the Apple Health `stats:*` authority ladder. Only `aggregation_provenance` is ever read back: the external-measurement reconciler selects it and refuses a lower-authority write against a higher-authority canonical row, and the cumulative drain reads it too. That column stays. `aggregation_contributor_count` and `aggregation_selected_source_hash` are written by three call sites and read by none. No select, no raw SQL, no export, no backup, no API contract, no repair path. The import-time selection keeps its deterministic tiebreak, which compares an in-memory map key computed per flush rather than a value read back from the table. Both are plain nullable scalars with no index, unique, check or foreign key, so the drop is a catalog-only operation that touches no measured value.
prisma/
The database layer. HealthLog runs PostgreSQL 16 via Prisma 7. This directory holds the single schema file and the forward-only migration history; the generated client is emitted elsewhere.
Contents
schema.prisma— 61 models, one file.cuid()primary keys,snake_casecolumns via@map(...), encrypted columns mostly suffixed*Encrypted(search the file; there are 24 encrypted column references). Thegenerator clientblock emits to../src/generated/prisma(imported as@/generated/prisma).migrations/— numbered, forward-only SQL migrations (0001_…upward).migration_lock.tomlpins the provider topostgresql.
Migration workflow
# author a migration from a schema edit
pnpm dlx prisma migrate dev --name <short_snake_case_name>
# regenerate the client after any schema change
pnpm dlx prisma generate
Number a new migration with the next free prefix. The production entrypoint runs prisma migrate deploy on boot, so every migration must apply cleanly forward — there is no down-migration path. Always include the migration file in the same change as the schema edit.
Conventions
- Encryption is fail-closed:
*Encryptedcolumns are written through@/lib/crypto(AES-256-GCM, versioned key ids); never store plaintext in an encrypted column. Key rotation isscripts/rotate-encryption-key.ts+docs/ops/encryption-key-rotation.md. - The generated client under
src/generated/prismais build output — do not edit it. - Schema-touching changes that affect the API surface must regenerate
docs/api/openapi.yaml(see../CLAUDE.md).
Related: ../src/lib/README.md (db.ts, rollups/), ../docs/ops/ (migrations + backup runbooks).