v0.2.0 — M7: LLM Integration Frontend ↔ Backend

- api.js: API bridge to FastAPI backend
- Dynamic NPC dialogues via gemma4:12b (cached 30s)
- Periodic world event generation (every ~10s)
- Event validation (no soft-lock)
- Backend health check on startup
- Fallback to static dialogue if LLM offline
- Tested: events ✅, dialogues ✅

frontend/index.html

@@ -74,6 +74,7 @@
     <script src="js/camera.js"></script>
     <script src="js/player.js"></script>
     <script src="js/input.js"></script>
+    <script src="js/api.js"></script>
     <script src="js/game.js"></script>
 </body>
 </html>