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jobtrackingapp/docs/verification/core-001-sqlite-provider-parity.md
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fix(db): repair fresh migration chain
2026-08-15 20:47:36 +02:00

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# CORE-001 — SQLite/provider parity verification
Date: 2026-08-02
## Result
`VERIFIED LOCALLY`. The audited SQLite `DateTimeOffset` failures are fixed without changing stored types or MariaDB query behavior. Production MariaDB execution and browser verification remain outstanding.
## Implementation
- SQLite materializes only owner/job-scoped CV variants, extraction runs/artifacts and AI rows before `DateTimeOffset` ordering or range comparison.
- MariaDB retains server-side ordering, range filtering, aggregation and pagination.
- The correction also covers CV retention cleanup and reprocess-artifact selection.
- No schema, dependency or deployment configuration changed.
## Automated evidence
- Focused affected-service suite: 81/81 passed.
- Real-provider compatibility suite: 3/3 passed in `SqliteDateTimeOffsetCompatibilityTests`.
- SQLite relational database: newest-first CV/history/workspace/assets, current-month/all-time AI usage, generation entitlement query, extraction runs, latest artifact and owner isolation.
- MariaDB/Pomelo: production ordering and range expressions generate SQL without opening a network connection.
- Full backend regression: 509/509 passed.
- `git diff --check`: passed (line-ending notices only).
- `docker compose config --quiet`: passed with expected unset optional-variable warnings.
## Runtime evidence
An isolated API used a disposable fresh SQLite root and synthetic `example.test` accounts only:
| Check | Result |
|---|---|
| `/health` | 200 |
| registration | 200; local cookies only |
| `/api/cv/variants` | 200 `[]` |
| `/api/profile-cv/runs` | 200 `[]` |
| `/api/ai/usage` | 200, zero usage |
| `/api/jobapplications/1/ai/history` | 200 `[]` |
| missing workspace | 404 |
| synthetic owner workspace | 200 with correct company/job/checklist aggregate |
| same workspace as User B | 404 |
| User B variants | 200 `[]` |
The exact isolated API process was stopped and port 5303 was confirmed closed. Logs and disposable evidence are under `docs/audits/evidence/core-001-runtime/`; no secret or personal data is present.
## Limitations
- Browser localhost access remains denied by the in-app browser administrator policy; no browser claim is made.
- Disposable MariaDB 11.8 execution now passes for a fresh application start and restart with all 29 migrations and 49 tables. Production MariaDB execution remains unverified.
- Direct `dotnet ef database update` against a blank SQLite file now reaches the latest migration and is idempotent. A populated older checkpoint preserves its job data through the same chain, and real application startup over the EF-only database serves `/health` (V-186). The broader migration/reconciler dual-ownership architecture remains JT-019 debt.
- Execution policy denied deletion of the exact disposable nested data directory; it is stopped and recorded in the session handoff.