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/effects/discipline-effects.ts

@@ -1,12 +1,13 @@
 // ─── Discipline Effects ───────────────────────────────────────────────────────
 // Computes bonuses from active disciplines and integrates with the unified effect system
 
-import type { GameState } from '../types';
+import type { DisciplineStoreState } from '../stores/discipline-slice';
+import type { DisciplineState } from '../types/disciplines';
 import { useDisciplineStore } from '../stores/discipline-slice';
 import { ALL_DISCIPLINES } from '../data/disciplines';
 import { calculateStatBonus, getUnlockedPerks } from '../utils/discipline-math';
 
-export function computeDisciplineEffects(state: GameState): {
+export function computeDisciplineEffects(_state?: DisciplineStoreState): {
   bonuses: Record<string, number>;
   multipliers: Record<string, number>;
   specials: Set<string>;
@@ -15,7 +16,7 @@ export function computeDisciplineEffects(state: GameState): {
   const activeDiscs = Object.entries(disciplines)
     .filter(([, disc]) => disc && !disc.paused)
     .map(([id, disc]) => ({ id, disc, def: ALL_DISCIPLINES.find(d => d.id === id) }))
-    .filter((entry): entry is { id: string; disc: any; def: NonNullable<typeof ALL_DISCIPLINES[0]> } => !!entry.def);
+    .filter((entry): entry is { id: string; disc: DisciplineState; def: NonNullable<typeof ALL_DISCIPLINES[0]> } => !!entry.def);
 
   const bonuses: Record<string, number> = {};
   const multipliers: Record<string, number> = {};