cleanup: delete computed-stats.ts shim and store/index.ts

- Delete src/lib/game/computed-stats.ts (root-level re-export shim)
- Delete src/lib/game/store/index.ts (nothing imports from it)
- Update __tests__/computed-stats.test.ts to import from ../utils instead
- Clean up craftingStore.ts imports (remove unused useGameStore, CraftingApply)

Typecheck and lint pass (pre-existing DisciplinesTab.tsx errors unchanged)

src/lib/game/stores/gameActions.ts

@@ -1,9 +1,7 @@
 import { computeMaxMana } from '../utils';
-import { computeEffects } from '../upgrade-effects';
 import { useUIStore } from './uiStore';
 import { usePrestigeStore } from './prestigeStore';
 import { useManaStore } from './manaStore';
-import { useSkillStore } from './skillStore';
 import { useCombatStore } from './combatStore';
 
 export const createResetGame = (set: (state: any) => void, initialState: any) => () => {
@@ -12,7 +10,6 @@ export const createResetGame = (set: (state: any) => void, initialState: any) =>
     localStorage.removeItem('mana-loop-ui-storage');
     localStorage.removeItem('mana-loop-prestige-storage');
     localStorage.removeItem('mana-loop-mana-storage');
-    localStorage.removeItem('mana-loop-skill-storage');
     localStorage.removeItem('mana-loop-combat-storage');
     localStorage.removeItem('mana-loop-game-storage');
     localStorage.removeItem('mana-loop-crafting-storage');
@@ -24,7 +21,6 @@ export const createResetGame = (set: (state: any) => void, initialState: any) =>
   useUIStore.getState().resetUI();
   usePrestigeStore.getState().resetPrestige();
   useManaStore.getState().resetMana({}, {}, {}, {});
-  useSkillStore.getState().resetSkills();
   useCombatStore.getState().resetCombat(startFloor);
 
   set({
@@ -34,28 +30,20 @@ export const createResetGame = (set: (state: any) => void, initialState: any) =>
 };
 
 export const createGatherMana = () => () => {
-  const skillState = useSkillStore.getState();
   const manaState = useManaStore.getState();
   const prestigeState = usePrestigeStore.getState();
 
-  // Compute click mana
-  let cm = 1 + 
-    (skillState.skills.manaTap || 0) * 1 + 
-    (skillState.skills.manaSurge || 0) * 3;
+  // Base click mana (no skill bonuses)
+  const cm = 1;
 
-  // Mana overflow bonus
-  const overflowBonus = 1 + (skillState.skills.manaOverflow || 0) * 0.25;
-  cm = Math.floor(cm * overflowBonus);
-
-  const effects = computeEffects(skillState.skillUpgrades || {}, skillState.skillTiers || {});
   const max = computeMaxMana(
-    { 
-      skills: skillState.skills, 
-      prestigeUpgrades: prestigeState.prestigeUpgrades, 
-      skillUpgrades: skillState.skillUpgrades, 
-      skillTiers: skillState.skillTiers 
+    {
+      skills: {},
+      prestigeUpgrades: prestigeState.prestigeUpgrades,
+      skillUpgrades: {},
+      skillTiers: {}
     },
-    effects
+    undefined
   );
 
   useManaStore.getState().gatherMana(cm, max);