The app_settings table (per its migration schema) has no created_at/updated_at
columns — the canonical seed pattern (migration 103) inserts only
setting_key/setting_value/setting_type. Migration 127 wrongly added timestamps,
so the insert threw `SQLITE_ERROR: table app_settings has no column named
created_at` on every run of the migration suite. That broke the backend test
job (cascading through every suite that builds the schema) and the
Postgres-based fresh-install + schema-drift jobs.
Fix: drop the timestamp columns from the insert, matching migration 103.
Verified: full backend jest suite green (67 suites, 736 passed); migration
harness still green.
Luca
31867efcb9