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/plugin.py

@@ -46,14 +46,11 @@ class AIUIControlPlugin(BasePlugin):
 
     async def on_activate(self, db, service_container, event_bus) -> None:
         """Register the WebSocket manager in the service container on every activation."""
-        print("[STARTUP] ai_ui_control on_activate called", flush=True)
         await super().on_activate(db, service_container, event_bus)
-        print("[STARTUP] ai_ui_control super().on_activate done", flush=True)
         from app.plugins.builtins.ai_ui_control.websocket_manager import AIUIControlWSManager
 
         ws_manager = AIUIControlWSManager()
         service_container.register("ai_ui_control_ws", ws_manager)
-        print("[STARTUP] ai_ui_control WS manager registered in container", flush=True)
         logger.info("AI UI Control WebSocket manager registered")
 
     async def on_deactivate(self, db, service_container, event_bus) -> None:

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) ───