refactor: make activate() read mana state from stores directly instead of requiring UI to pass gameState bag

src/components/game/tabs/DisciplinesTab.tsx

@@ -85,16 +85,19 @@ export const DisciplinesTab: React.FC = () => {
   const [activeAttunement, setActiveAttunement] = useState<string>('base');
 
   const elements = useManaStore((s) => s.elements);
-  const rawMana = useManaStore((s) => s.rawMana);
   const signedPacts = usePrestigeStore((s) => s.signedPacts);
 
+  // NOTE: activate() now reads rawMana/elements/signedPacts directly from the
+  // mana and prestige stores, so the UI only needs to pass the discipline id.
+  // This prevents the recurring bug where a missing field in a manually
+  // constructed gameState bag silently prevented reactivation.
   const handleToggle = useCallback((id: string, paused: boolean) => {
     if (paused) {
-      activate(id, { elements, rawMana, signedPacts });
+      activate(id);
     } else {
       deactivate(id);
     }
-  }, [activate, deactivate, elements, rawMana, signedPacts]);
+  }, [activate, deactivate]);
 
   const activeTab = ATTUNEMENT_TABS.find((t) => t.key === activeAttunement);