§2.5: Remove the planned PostgreSQL→SQLite refactor note; prohibit
alternative database engines in integration tests.
§5.2: Explicitly require a real PostgreSQL instance for integration
tests; ban SQLite — a GROUP BY/HAVING production bug was masked by
SQLite's permissive dialect in feature 007.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Due to the introduction of image thumbnail generation in
cd89ba5dea, the scope boundaries in §10 of
the project constitution should be updated with a clarification.