fix: multiple bug fixes - infinite loop crash, enchant tick handlers, discipline crash, Plasma symbol, desync

- #236: Fix Climb the Spire React #185 infinite loop - removed redundant set() in processCombatTick that caused double Zustand writes per tick
- #235: Add enchanting design/prepare/apply tick handlers - extracted to pipelines/enchanting-tick.ts
- #235: Fix startApplying not setting currentAction to 'enchant'
- #243: Guard discipline store against undefined activeIds/processedPerks from corrupted persisted state
- #245: Change Plasma symbol from ⚡ (conflicts with Lightning) to 🔴
- #241: Fix combat store maxFloorReached desync - initialize to 0, reset on exitSpireMode
- #239: Fix EffectSelector not rendering when unlockedEffects is empty (fresh game)
- Created pipelines/enchanting-tick.ts to keep gameStore.ts under 400 lines

src/lib/game/stores/combatStore.ts

@@ -19,7 +19,7 @@ export const useCombatStore = create<CombatStore>()(
       currentFloor: 1,
       floorHP: getFloorMaxHP(1),
       floorMaxHP: getFloorMaxHP(1),
-      maxFloorReached: 1,
+      maxFloorReached: 0,
       activeSpell: 'manaBolt',
       currentAction: 'meditate',
       castProgress: 0,
@@ -164,6 +164,7 @@ export const useCombatStore = create<CombatStore>()(
           currentRoom: generateFloorState(1),
           castProgress: 0,
           clearedFloors: {},
+          maxFloorReached: 0,
         });
       },