fix: correct supervisor command paths for virtual environments

Update supervisor configuration to use correct relative paths when
working directory is set to service subdirectory.

Changes:
- orchestrator: change to model-orchestrator directory, use venv/bin/python
- webdav-sync: already in webdav-sync directory, use venv/bin/python

This fixes "ENOENT" errors when supervisor tries to exec the python
interpreter from the virtual environment.

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

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

supervisord.conf

@@ -41,8 +41,8 @@ stopwaitsecs=30
 
 # AI Model Orchestrator
 [program:orchestrator]
-command=model-orchestrator/venv/bin/python model-orchestrator/orchestrator_subprocess.py
-directory=.
+command=venv/bin/python orchestrator_subprocess.py
+directory=model-orchestrator
 autostart=false
 autorestart=true
 startretries=3
@@ -58,7 +58,7 @@ stopwaitsecs=30
 
 # ComfyUI WebDAV Sync Service
 [program:webdav-sync]
-command=webdav-sync/venv/bin/python webdav_sync.py
+command=venv/bin/python webdav_sync.py
 directory=webdav-sync
 autostart=true
 autorestart=true