fix: add router prefix for ai_ui_control WebSocket and REST routes

- APIRouter had no prefix, so WebSocket was on /ws not /api/v1/ai-ui-control/ws
- This caused 403 on every WebSocket connection attempt
- Remove debug print statements

app/plugins/builtins/ai_ui_control/routes.py

@@ -26,7 +26,7 @@ from app.plugins.builtins.ai_ui_control.schemas import (
 
 logger = logging.getLogger(__name__)
 
-router = APIRouter(tags=["ai-ui-control"])
+router = APIRouter(prefix="/api/v1/ai-ui-control", tags=["ai-ui-control"])
 
 
 # ─── REST endpoints (for AI agents) ───