feat: rewrite fabricator e2e test with debug bridge for store access

- Rewrite e2e/fabricator-happy-path.spec.ts from scratch:
  craft 8 gear pieces (1 per slot) via Fabricator UI,
  equip all via store bridge, verify equipment effects
- Add debugBridge.ts: exposes Zustand stores on window.__TEST__
  so Playwright can call store actions via page.evaluate()
- Import debugBridge in page.tsx as side-effect
- Uses Debug tab UI for attunement/element unlocking
- Uses store bridge for discipline XP, mana capacity, materials,
  recipe unlocking, and equipment slot assignment
- Test passes in ~3.5 minutes (155s craft time + setup)

src/app/page.tsx

@@ -18,6 +18,7 @@ import {
 } from '@/lib/game/stores';
 import { computeDisciplineEffects } from '@/lib/game/effects/discipline-effects';
 import { useGameLoop } from '@/lib/game/stores/gameHooks';
+import '@/lib/game/stores/debugBridge'; // side-effect: exposes stores on window.__TEST__
 import { getUnifiedEffects } from '@/lib/game/effects';
 import { hasSpecial, SPECIAL_EFFECTS } from '@/lib/game/effects';
 import { TimeDisplay } from '@/components/game';