ci(perf): cache Playwright + uv venvs; tighten lint-only scope#530
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Three independent CI-cost wins from the e2e-strategy audit: 1. **Cache Playwright browsers** in all 5 jobs that install them (examples-chat-e2e, cockpit-e2e × 24 matrix entries, website-e2e, demo-deploy/website-conditional, production-smoke). Key on the lockfile hash so any @playwright/test bump invalidates the cache. Expected savings: ~30-60s per runner × 28+ runners on a libs/chat PR ≈ ~15-30 CI-minutes. 2. **Cache per-cap python `.venv`** at all 3 uv-sync sites (examples-chat-smoke, examples-chat-e2e, cockpit-e2e × 24). Key on the per-cap uv.lock hash. `uv sync` becomes a no-op when the cache hits. Cache key includes `matrix.cap.python` so the 24 caps don't fight over a single cache entry. 3. **Tighten lint-only file scope**. `eslint.config.mjs` was in GLOBAL_CI_FILES, forcing the full e2e fleet to fire on any lint-config tweak. Moved to a new LINT_ONLY_FILES set that flips only the scopes that actually run `nx lint` (library, cockpit, website, examples_chat) — not the *_e2e/_smoke/_deploy/_secret scopes. Added 2 unit tests covering the new behavior; all 15 ci-scope tests pass. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Three 🟢 easy wins from the e2e-strategy audit:
.venvat all 3uv syncsites. Keyed on per-capuv.lockhash.uv syncbecomes a no-op on cache hit. Expected: ~10-15 CI-min saved per PR.eslint.config.mjsmoved out ofGLOBAL_CI_FILES(which forces full scope) into a newLINT_ONLY_FILESset that flips only the scopes runningnx lint. Avoids the ~50 CI-minute spike from a one-line lint-config tweak re-running the 24-cap cockpit-e2e matrix.Combined: ~25-45 CI-minutes saved per typical PR.
Test plan
node --test scripts/ci-scope.spec.mjs— 15/15 passing (2 new tests for lint-only)yaml.safe_loadcleanuv syncis fast)Audit source: e2e testing strategy audit (in-session research, not committed)
🤖 Generated with Claude Code