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/components/game/tabs/StatsTab.tsx

@@ -28,7 +28,19 @@ export function StatsTab() {
         effectiveRegen={manaStats.effectiveRegen}
         clickMana={manaStats.clickMana}
         meditationMultiplier={manaStats.meditationMultiplier}
-        upgradeEffects={manaStats.upgradeEffects}
+        upgradeEffects={{
+          ...manaStats.upgradeEffects,
+          incursionStrength: manaStats.incursionStrength,
+          rawMana: manaStats.maxMana,
+          hasSteadyStream: manaStats.hasSteadyStream,
+          hasManaTorrent: manaStats.hasManaTorrent,
+          hasDesperateWells: manaStats.hasDesperateWells,
+          manaCascadeBonus: manaStats.manaCascadeBonus,
+          manaWaterfallBonus: manaStats.manaWaterfallBonus,
+          hasFlowSurge: manaStats.hasFlowSurge,
+          hasManaOverflow: manaStats.hasManaOverflow,
+          hasEternalFlow: manaStats.hasEternalFlow,
+        }}
         elemMax={elemMax}
       />
       <CombatStatsSection