fix: remove duplicate activity log messages after Spire exit

src/components/game/tabs/SpireCombatPage/SpireCombatPage.tsx

@@ -124,7 +124,6 @@ export function SpireCombatPage() {
 
   const handleExitSpire = () => {
     exitSpireMode();
-    addActivityLog('floor_transition', '🚪 Exited the Spire.');
   };
 
   return (

src/lib/game/stores/combat-descent-actions.ts

@@ -237,8 +237,6 @@ export function onEnterRoomDescend(get: GetFn, set: SetFn): void {
       }
     }
   } else {
-    get().addActivityLog('floor_transition',
-      `Floor ${s.currentFloor} Room ${s.currentRoomIndex + 1} is clear — moving on`);
     advanceRoomOrFloor(get, set);
   }
 }