Initial scaffold: React+TS+Vite frontend, FastAPI backend, config system

backend/routes/config_routes.py

@@ -0,0 +1,31 @@
+from fastapi import APIRouter
+from config import get_config, save_config, load_config, AppConfig
+
+router = APIRouter(prefix="/api")
+
+
+@router.get("/config")
+async def get_configuration():
+    config = get_config()
+    return config.model_dump()
+
+
+@router.put("/config")
+async def update_configuration(data: AppConfig):
+    save_config(data)
+    return {"status": "ok"}
+
+
+@router.post("/config/reload")
+async def reload_configuration():
+    load_config()
+    return {"status": "ok"}
+
+
+@router.get("/health")
+async def health_check():
+    from mqtt_bridge import get_mqtt_status
+    return {
+        "status": "ok",
+        "mqtt": get_mqtt_status(),
+    }