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/constants/elements.ts

@@ -43,7 +43,7 @@ export const ELEMENTS: Record<string, ElementDef> = {
   void:    { name: "Void",   sym: "🕳️", color: "#4A235A", glow: "#4A235A40", cat: "exotic", recipe: ["dark", "dark", "death"] },
   soul:    { name: "Soul",    sym: "💫", color: "#E8D5F5", glow: "#E8D5F540", cat: "exotic", recipe: ["light", "dark", "transference"] },
   time:     { name: "Time",    sym: "⏱️", color: "#C5B99A", glow: "#C5B99A40", cat: "exotic", recipe: ["soul", "sand", "transference"] },
-  plasma:   { name: "Plasma",  sym: "⚡", color: "#FF6B9D", glow: "#FF6B9D40", cat: "exotic", recipe: ["lightning", "fire", "transference"] },
+  plasma:   { name: "Plasma",  sym: "🔴", color: "#FF6B9D", glow: "#FF6B9D40", cat: "exotic", recipe: ["lightning", "fire", "transference"] },
 };
 
 // NOTE: Life, Blood, Wood, Mental, and Force mana types have been removed.