Remove Temporal Memory skill, fix unimplemented crafting effects

- Remove Temporal Memory skill from SKILLS_DEF (functionality should only be purchased with insight)
- Remove temporalMemory references from all store files (timeSlice, prestigeSlice, store, gameStore)
- Update tests to remove Temporal Memory test cases
- Fix TODO items in craftingSlice.ts:
  - Add skill caching for calculateApplicationTime
  - Use getEnchantEfficiencyBonus for efficiency calculation
- Transference mana type verified and working correctly

src/lib/game/store/prestigeSlice.ts

@@ -55,15 +55,6 @@ export const createPrestigeSlice = (
     const insightGained = state.loopInsight || calcInsight(state);
     const total = state.insight + insightGained;
 
-    // Keep some spells through temporal memory
-    const spellsToKeep: string[] = [];
-    if (state.skills.temporalMemory) {
-      const learnedSpells = Object.entries(state.spells)
-        .filter(([, s]) => s.learned)
-        .map(([id]) => id);
-      spellsToKeep.push(...learnedSpells.slice(0, state.skills.temporalMemory));
-    }
-
     // Reset to initial state with insight carried over
     const pu = state.prestigeUpgrades;
     const startFloor = 1 + (pu.spireKey || 0) * 2;
@@ -79,17 +70,14 @@ export const createPrestigeSlice = (
       };
     });
 
-    // Reset spells
+    // Reset spells - always start with Mana Bolt
     const spells: Record<string, { learned: boolean; level: number; studyProgress: number }> = {
       manaBolt: { learned: true, level: 1, studyProgress: 0 },
     };
-    spellsToKeep.forEach(spellId => {
-      spells[spellId] = { learned: true, level: 1, studyProgress: 0 };
-    });
 
-    // Add random starting spells from spell memory upgrade
+    // Add random starting spells from spell memory prestige upgrade (purchased with insight)
     if (pu.spellMemory) {
-      const availableSpells = Object.keys(SPELLS_DEF).filter(s => s !== 'manaBolt' && !spellsToKeep.includes(s));
+      const availableSpells = Object.keys(SPELLS_DEF).filter(s => s !== 'manaBolt');
       const shuffled = availableSpells.sort(() => Math.random() - 0.5);
       for (let i = 0; i < Math.min(pu.spellMemory, shuffled.length); i++) {
         spells[shuffled[i]] = { learned: true, level: 1, studyProgress: 0 };