refactor: eliminate as any type casts across 18 source files

- Fix computeDisciplineEffects() to not require GameState parameter
- Fix getUnifiedEffects() to accept proper partial state type
- Replace upgradeEffects as any with proper UnifiedEffects type
- Replace explicit : any annotations with proper types (ComputedEffects, DesignProgress, SpellDef, etc.)
- Fix activity-log.ts eventType casting
- Fix crafting-design.ts computedEffects and designProgress types
- Fix page.tsx grimoire spell rendering with proper SpellDef property names
- Fix StatsTab ManaStatsSection with proper ManaStatsEffects interface
- Remove unused imports (useDisciplineStore from page.tsx, LeftPanel.tsx)

Remaining: 1 as any in craftingStore.ts (pre-existing CraftingStore/GameState architectural mismatch)

src/lib/game/stores/gameStore.ts

@@ -79,15 +79,13 @@ export const useGameStore = create<GameCoordinatorStore>()(
         const manaState = useManaStore.getState();
         const combatState = useCombatStore.getState();
         const craftingState = useCraftingStore.getState();
-        const disciplineStoreState = useDisciplineStore.getState();
-
         // Compute equipment specials from enchanted gear
         const equipmentEffects = computeEquipmentEffects(
           craftingState.equipmentInstances || {},
           craftingState.equippedInstances || {}
         );
         // Compute discipline specials from active discipline perks
-        const disciplineEffects = computeDisciplineEffects(disciplineStoreState as any);
+        const disciplineEffects = computeDisciplineEffects();
         // Merge all specials into a single set for hasSpecial checks
         const allSpecials = new Set<string>([
           ...equipmentEffects.specials,