fix: correct wallet and marketplace service paths

- Fix wallet service: change wallet-daemon to wallet, use simple_daemon.py
- Fix marketplace service: use agent_marketplace.py on port 8005
- Update Python paths and working directories

systemd/aitbc-marketplace.service

@@ -1,15 +1,18 @@
 [Unit]
-Description=AITBC Marketplace UI
+Description=AITBC Agent-First GPU Marketplace
 After=network.target
 
 [Service]
-Type=exec
+Type=simple
 User=root
-WorkingDirectory=/opt/aitbc/apps/marketplace-ui
-Environment=PATH=/opt/aitbc/.venv/bin
-ExecStart=/opt/aitbc/.venv/bin/python server.py --port 3001
+Group=root
+WorkingDirectory=/opt/aitbc/apps/marketplace
+Environment=PYTHONPATH=/opt/aitbc/apps/marketplace:/opt/aitbc/packages/py/aitbc-sdk/src
+ExecStart=/usr/bin/python3 /opt/aitbc/apps/marketplace/agent_marketplace.py
 Restart=always
 RestartSec=10
+StandardOutput=journal
+StandardError=journal
 
 [Install]
 WantedBy=multi-user.target