fix: resolve priority 4 issues — discipline mutation, skill→discipline migration, uiStore persistence, game loop interval, toast listener leak, page re-renders

- Issue 70: Fix discipline-slice.ts nested element mutation (use immutable spread)
- Issue 71: Add persist middleware to uiStore for paused/gameOver/victory
- Issue 72: Wire discipline effects into calcDamage (spell-casting, void-manipulation)
- Issue 73: Fix useGameLoop interval recreation (use getState() + empty deps)
- Issue 74: Fix use-toast.ts listener leak (change [state] dep to [])
- Issue 75: Reduce page.tsx re-renders with useShallow for multi-field subscriptions
- Issue 76: Fix createGatherMana hardcoded click mana (use computeClickMana with discipline effects)
- Issue 77: Pass discipline effects to computeMaxMana/computeRegen/calcInsight in tick()
- Export DisciplineBonuses type and useDisciplineStore from barrel exports
- Update tests to match new function signatures

src/lib/game/stores/gameStore.ts

@@ -97,11 +97,13 @@ export const useGameStore = create<GameCoordinatorStore>()(
 
         const maxMana = computeMaxMana(
           { skills: {}, prestigeUpgrades: prestigeState.prestigeUpgrades, skillUpgrades: {}, skillTiers: {} },
-          undefined
+          undefined,
+          disciplineEffects,
         );
         const baseRegen = computeRegen(
           { skills: {}, prestigeUpgrades: prestigeState.prestigeUpgrades, skillUpgrades: {}, skillTiers: {}, attunements: {} },
-          undefined
+          undefined,
+          disciplineEffects,
         );
 
         // Time progression
@@ -120,7 +122,7 @@ export const useGameStore = create<GameCoordinatorStore>()(
             signedPacts: prestigeState.signedPacts,
             prestigeUpgrades: prestigeState.prestigeUpgrades,
             skills: {},
-          });
+          }, disciplineEffects);
 
           addLog(`⏰ The loop ends. Gained ${insightGained} Insight.`);
           useUIStore.getState().setGameOver(true, false);
@@ -137,7 +139,7 @@ export const useGameStore = create<GameCoordinatorStore>()(
             signedPacts: prestigeState.signedPacts,
             prestigeUpgrades: prestigeState.prestigeUpgrades,
             skills: {},
-          }) * 3;
+          }, disciplineEffects) * 3;
 
           addLog(`🏆 VICTORY! The Awakened One falls! Gained ${insightGained} Insight!`);
           useUIStore.getState().setGameOver(true, true);