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`MoodPrediction` holds the expected value of a day beside the day's own rating: one row per account per local day, with a band and the number of days the fit used. Two tables rather than four columns on the entry, because the point of the second value is that the person cannot correct it into agreement with the first — the distance between them is the finding, and a value the edit form can write is not a second reading. The table stays out of the disaster-recovery backup and the reason is written where the completeness guard reads it: every row is recomputable from the entries, the contexts and the linked modules, and carrying one would restore a forecast made by a model version that may no longer exist against data the restore has just moved. It is in the wipe plan, because a derived row is still a day-by-day statement about somebody. The write-surface guard lands red on purpose and names what is missing: `lib/jobs/mood-prognosis-refresh.ts` does not exist yet, so the writer set is empty where it should hold exactly that one file. The job closes it. The rest of the guard is green now — no route, page or component writes the table, and the matcher proves itself against a call broken across lines, an aliased client, a read and a different model.
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).