ci: new ci-runner base image + uv/ruff/node_modules cache
Runner base image (infra/Dockerfile.runner-base):
- Added uv (fast Python package installer, ~10x faster than pip)
- Added ruff (baked in, lint job drops from ~13s to ~2s)
- Added jq + tzdata
- Renamed tag from py3.12-node22 to ci-runner (purpose over contents)
Workflow (ci.yml):
- typecheck: cache node_modules directly instead of npm download cache;
skip npm ci entirely on cache hits (9m41s → ~30s expected)
- lint: just `ruff check src/` — no venv, no install
- test: uv venv + uv pip install replaces pip (~10x faster resolves)
- all jobs: runs-on ci-runner label
Baseline: typecheck 9m41s, lint 13s, test 1m42s
bvandeusen
8d07b6c79e