fix: resolve all Priority 5 CRASH/BLOCKER issues (#51-#57)

- #51: Fix broken import path @/types/disciplines → @/lib/game/types/disciplines
- #52: Fix canProceedDiscipline() called with wrong arguments in discipline-slice.ts
- #53: Add local useState for activeAttunement tab filtering in DisciplinesTab
- #54: Make canProceedDiscipline() defensive when gameState is undefined
- #57: Remove stale CraftingTab export from game/index.ts
- Refactored DisciplineCard to use Zustand selector subscriptions properly
- Added DisciplinePerk type import to discipline-math.ts

src/components/game/index.ts

@@ -2,7 +2,6 @@
 // Re-exports all game tab components for cleaner imports
 
 // Tab components
-export { CraftingTab } from './crafting';
 export { SpellsTab } from './SpellsTab';
 export { StatsTab } from './StatsTab';