Fix Spire Mode floor rendering and swarm floors (Tasks 5 & 6)

- Added enemy naming system with getEnemyName() function
- Updated EnemyState type to include name field
- Updated generateSwarmEnemies() and generateFloorState() to assign enemy names
- Fixed SpireTab.tsx (both versions) to display:
  - Floor type (Combat/Swarm/Speed/Guardian/Puzzle) with icons
  - Named enemies based on element and floor tier
  - Special floor properties (armor %, dodge chance)
  - Multiple enemies for swarm floors with individual HP bars
- Added ROOM_TYPE_LABELS to constants for display
- Verified floor type generation logic works correctly
- Build succeeds with npm run build

src/app/page.tsx

@@ -257,14 +257,21 @@ export default function ManaLoopGame() {
                   <h2 className="text-2xl font-bold game-title text-amber-400">
                     🏔️ Spire Mode - Floor {store.currentFloor}
                   </h2>
-                  <div className="flex gap-2">
+                  <div className="flex gap-2 items-center">
+                    {/* Show Climbing indicator when actively climbing */}
+                    {store.currentAction === 'climb' && !store.isDescending && (
+                      <Badge className="bg-green-900/50 text-green-300 border-green-600">
+                        Climbing
+                      </Badge>
+                    )}
                     <Button
                       variant="outline"
                       className="border-blue-600/50 text-blue-400 hover:bg-blue-900/20"
                       onClick={() => store.climbDownFloor()}
+                      disabled={store.isDescending}
                     >
                       <ChevronDown className="w-4 h-4 mr-2" />
-                      Climb Down
+                      {store.isDescending ? 'Descending...' : 'Begin Descent'}
                     </Button>
                     {store.currentFloor === 1 ? (
                       <Button