- new helper: apps/web/src/lib/keys.ts — stable string-key arrays for fixed-length skeleton/decorative lists, plus dynamicKeys() for runtime-sized lists
- group 6 (noArrayIndexKey): convert ~25 of 32 Array.from skeleton patterns to KEYS_N.map across 21 files (admin pages, catalog, dashboard, schema viewer, remotion demos)
- DashboardDemo HOTSPOTS now carries explicit ids; OnboardingProgress uses step.label as key
- biome --write format pass (24 files)
Lint count: 218 → 164 (groups 6/7 still in progress: 9 noArrayIndexKey + 121 noExplicitAny + 42 noNonNullAssertion + a few small remaining).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>