Two CI-config issues blocking the gate from going green:
1. **Backend tests connect to localhost instead of postgres service.**
conftest.py reads DATABASE_TEST_URL only — DATABASE_URL is intentionally
not consulted (per dab740d's test-DB-isolation hardening — running
pytest with DATABASE_URL set previously dropped the dev DB schema).
The CI workflow only sets DATABASE_URL, so conftest falls back to its
localhost default and every fixture-setup fails with
`OSError: Connect call failed ('127.0.0.1', 5432)` — observed as 638
errors on the latest main run.
Add DATABASE_TEST_URL pointing at the postgres service container.
Same connection string as DATABASE_URL — the test DB and the app DB
are the same physical postgres in CI; conftest's safety assertion is
satisfied by the URL containing "test".
2. **Frontend artifact upload fails on Gitea Actions runner.**
actions/upload-artifact@v4 (and v5) are not supported on Gitea
Actions / GHES — the runner returns
`GHESNotSupportedError: ... not currently supported on GHES`. Lint
itself is now passing (0 errors after PR #149); the job exits 1 only
because the upload step then fails.
Pin upload-artifact + download-artifact to v3, the latest version
compatible with Gitea Actions until they ship v4 support.
After this lands, both backend and frontend CI gates should turn
green — at which point we can also add backend to the required status
checks on main.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>