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Three optimizations to the CI frontend test pipeline:
1. Run E2E tests and coverage collection concurrently
- Previously sequential (E2E ~1.5min, then coverage ~5.75min)
- Now both run in parallel against the same instrumented server
- Expected savings: ~5 min (coverage runs alongside E2E instead of after)
2. Replace networkidle with domcontentloaded in coverage collector
- SPA uses hash routing — networkidle waits 500ms for network silence
on every navigation, adding ~10-15s of dead time across 23 navigations
- domcontentloaded fires immediately once HTML is parsed; JS initializes
the route handler synchronously
- For in-page hash changes, use 200ms setTimeout instead of
waitForLoadState (which would never re-fire for same-document nav)
3. Extract coverage from E2E tests too
- E2E tests already exercise the app against the instrumented server
- Now writes window.__coverage__ to .nyc_output/e2e-coverage.json
- nyc merges both coverage files for higher total coverage
Also:
- Split Playwright install into browser + deps steps (deps skip if present)
- Replace sleep 5 with health-check poll in quick E2E path