feat: expose Supervisor web UI for proxy access

Disable Supervisor's built-in authentication and expose on all interfaces (0.0.0.0:9001) to enable reverse proxy access via nginx and Authelia SSO. Authentication is now handled by Authelia at supervisor.ai.pivoine.art.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

supervisord.conf

@@ -15,11 +15,12 @@ serverurl=unix:///workspace/supervisor.sock
 [rpcinterface:supervisor]
 supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
 
-# Web interface for monitoring (localhost only)
+# Web interface for monitoring (proxied via nginx + Authelia)
 [inet_http_server]
-port=127.0.0.1:9001
-username=admin
-password=runpod2024
+port=0.0.0.0:9001
+# Authentication disabled - handled by Authelia SSO
+# username=admin
+# password=runpod2024
 
 # ComfyUI Server
 [program:comfyui]