Call stop() for tunnel cleanup

Import the stop function from api.tunnel and use stop() in the finally cleanup instead of calling tunnel.stop(). This centralizes shutdown logic and ensures the tunnel is torn down via the module-level cleanup routine.

run_tunnel.py

@@ -3,7 +3,7 @@ from flask import Flask, request
 from helpers import runtime, dotenv, process
 from helpers.print_style import PrintStyle
 
-from api.tunnel import Tunnel
+from api.tunnel import Tunnel, stop
 
 # initialize the internal Flask server
 app = Flask("app")
@@ -50,7 +50,7 @@ def run():
     finally:
         # Clean up tunnel if it was started
         if tunnel:
-            tunnel.stop()
+            stop()
 
 
 # run the internal server