setup-node's `cache: yarn` needs yarn already on PATH, and the Node it
installs does not ship one, so the frontend job failed at setup on every
run. Install the lockfile's Yarn 1.22.22 explicitly instead.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Fail startup on unsafe or malformed production settings (scripts/validate_config.py),
run it before migrations, and stop on a failed `aerich upgrade`.
- Forward the context-budget, timeout and metrics settings through Compose; accept
the historical TAVILIY_API_KEY spelling.
- Build the image from uv.lock and yarn.lock in a multi-stage Dockerfile.
- Add Gitea Actions CI: Ruff, unit tests, context evaluation, frontend tests,
typecheck and build.
- Update README and deployment/development docs to match the current stack.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>