ci: validate consolidated workflows (extended path) #5

Job	Run time
Unit tests	1m 3s
Visual regression (Chromatic)	5m 2s
Lint, type-check & markdown	1m 50s
Build website (mock data)	5m 17s
Page visual snapshots (Playwright + Chromatic)	8m 56s
E2E tests	31m 42s
Lighthouse audit	7m 36s
	1h 1m 26s

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