fix: hydration mismatch, production Dockerfile, SSR localStorage guard, SpellsTab/SkillsTab/debug store migrations

src/components/game/debug/ElementDebug.tsx

@@ -9,15 +9,15 @@ import { ELEMENTS } from '@/lib/game/constants';
 export function ElementDebug() {
   const elements = useManaStore((s) => s.elements);
   const unlockElement = useManaStore((s) => s.unlockElement);
-  const debugAddElementalMana = useManaStore((s) => s.debugAddElementalMana);
+  const addElementMana = useManaStore((s) => s.addElementMana);
 
   const handleUnlockElement = (element: string) => {
     unlockElement(element, 500);
   };
 
   const handleAddElementalMana = (element: string, amount: number) => {
-    if (debugAddElementalMana) {
-      debugAddElementalMana(element, amount);
+    if (addElementMana) {
+      addElementMana(element, amount);
     }
   };