fix: remove banned mana type references and fix missing ComboMeter import

- Remove ComboMeter from game component exports (file doesn't exist)
- Update DebugTab to not reference life, blood, wood, mental, force mana
- These mana types are banned per AGENTS.md lifesteal/healing policy

src/components/game/index.ts

@@ -12,7 +12,6 @@ export { StatsTab } from './tabs/StatsTab';
 // UI components
 export { ActionButtons } from './ActionButtons';
 export { CalendarDisplay } from './CalendarDisplay';
-export { ComboMeter } from './ComboMeter';
 export { CraftingProgress } from './CraftingProgress';
 export { StudyProgress } from './StudyProgress';
 export { ManaDisplay } from './ManaDisplay';

src/components/game/tabs/DebugTab.tsx

@@ -365,7 +365,7 @@ export function DebugTab({ store }: DebugTabProps) {
                 variant="outline"
                 onClick={() => {
                   // Unlock all base elements
-                  ['fire', 'water', 'air', 'earth', 'light', 'dark', 'life', 'death'].forEach(e => {
+                  ['fire', 'water', 'air', 'earth', 'light', 'dark', 'death'].forEach(e => {
                     if (!store.elements[e]?.unlocked) {
                       store.unlockElement(e);
                     }
@@ -378,8 +378,8 @@ export function DebugTab({ store }: DebugTabProps) {
                 size="sm"
                 variant="outline"
                 onClick={() => {
-                  // Unlock utility elements
+                  // Unlock utility elements (only transference remains)
-                  ['mental', 'transference', 'force'].forEach(e => {
+                  ['transference'].forEach(e => {
                     if (!store.elements[e]?.unlocked) {
                       store.unlockElement(e);
                     }