feat(frontend): mount static UI at /app with simple auditories/equipment browser

backend/main.py

@@ -1,6 +1,7 @@
 # backend/main.py
 from fastapi import FastAPI
 from fastapi.responses import RedirectResponse
+from starlette.staticfiles import StaticFiles
 from fastapi.middleware.cors import CORSMiddleware
 
 from backend.routers.equipment_types import  equipment_types
@@ -29,9 +30,12 @@ def ping():
     return {"message": "pong"}
 
 
+# Serve static frontend
+app.mount("/app", StaticFiles(directory="frontend", html=True), name="frontend")
+
 @app.get("/")
 def root():
-    return RedirectResponse(url="/docs")
+    return RedirectResponse(url="/app/")
 
 
 # Подключение роутов