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/gameActions.ts

@@ -1,8 +1,10 @@
-import { computeMaxMana } from '../utils';
+import { computeMaxMana, computeClickMana } from '../utils';
 import { useUIStore } from './uiStore';
 import { usePrestigeStore } from './prestigeStore';
 import { useManaStore } from './manaStore';
 import { useCombatStore } from './combatStore';
+import { computeDisciplineEffects } from '../effects/discipline-effects';
+import { useDisciplineStore } from './discipline-slice';
 
 export const createResetGame = (set: (state: any) => void, initialState: any) => () => {
   // Clear all persisted state
@@ -14,6 +16,7 @@ export const createResetGame = (set: (state: any) => void, initialState: any) =>
     localStorage.removeItem('mana-loop-game-storage');
     localStorage.removeItem('mana-loop-crafting-storage');
     localStorage.removeItem('mana-loop-attunement-storage');
+    localStorage.removeItem('mana-loop-discipline-store');
   }
 
   const startFloor = 1;
@@ -30,11 +33,14 @@ export const createResetGame = (set: (state: any) => void, initialState: any) =>
 };
 
 export const createGatherMana = () => () => {
-  const manaState = useManaStore.getState();
   const prestigeState = usePrestigeStore.getState();
+  const disciplineEffects = computeDisciplineEffects(useDisciplineStore.getState() as any);
 
-  // Base click mana (no skill bonuses)
-  const cm = 1;
+  // Compute click mana with discipline bonuses (mana-channeling → clickManaMultiplier)
+  const cm = computeClickMana(
+    { skills: {} },
+    disciplineEffects,
+  );
 
   const max = computeMaxMana(
     {
@@ -43,7 +49,8 @@ export const createGatherMana = () => () => {
       skillUpgrades: {},
       skillTiers: {}
     },
-    undefined
+    undefined,
+    disciplineEffects,
   );
 
   useManaStore.getState().gatherMana(cm, max);