Add 3x-ui v3.5.0 API panel connection and client management

Co-authored-by: Cursor <cursoragent@cursor.com>

app/main.py

@@ -6,7 +6,7 @@ from fastapi.templating import Jinja2Templates
 
 from app.config import settings
 from app.deps import install_session_middleware
-from app.routers import admin, auth, public
+from app.routers import admin, auth, public, xui
 
 
 def create_app() -> FastAPI:
@@ -23,6 +23,7 @@ def create_app() -> FastAPI:
     app.include_router(public.router)
     app.include_router(auth.router)
     app.include_router(admin.router)
+    app.include_router(xui.router)
 
     return app