Consolidate service scripts into apps directories

- Move blockchain scripts to apps/blockchain-node/scripts/
- Move marketplace scripts to apps/marketplace/scripts/
- Move agent daemon to apps/agent-coordinator/scripts/
- Move monitor to apps/monitor/
- Update systemd service files to point to new locations
- Update internal path references in moved scripts
- Remove empty /opt/aitbc/services directory

systemd/aitbc-agent-daemon.service

@@ -12,7 +12,7 @@ WorkingDirectory=/opt/aitbc
 EnvironmentFile=/etc/aitbc/.env
 EnvironmentFile=/etc/aitbc/node.env
 Environment="PATH=/opt/aitbc/venv/bin:/usr/local/bin:/usr/bin:/bin"
-ExecStart=/opt/aitbc/venv/bin/python /opt/aitbc/services/agent_daemon.py \
+ExecStart=/opt/aitbc/venv/bin/python /opt/aitbc/apps/agent-coordinator/scripts/agent_daemon.py \
     --wallet temp-agent \
     --address ait1d18e286fc0c12888aca94732b5507c8787af71a5 \
     --password-file /var/lib/aitbc/keystore/.agent_daemon_password \

systemd/aitbc-marketplace.service

@@ -9,12 +9,12 @@ User=root
 Group=root
 WorkingDirectory=/opt/aitbc
 Environment=PATH=/usr/bin:/usr/local/bin:/usr/bin:/bin
-Environment=PYTHONPATH=/opt/aitbc/services
+Environment=PYTHONPATH=/opt/aitbc/apps/marketplace/scripts:/opt/aitbc/apps/marketplace/src:/opt/aitbc/apps/coordinator-api/src
 EnvironmentFile=/etc/aitbc/.env
 EnvironmentFile=/etc/aitbc/node.env
 
 # Production execution
-ExecStart=/opt/aitbc/venv/bin/python /opt/aitbc/services/marketplace.py
+ExecStart=/opt/aitbc/venv/bin/python /opt/aitbc/apps/marketplace/scripts/marketplace.py
 ExecReload=/bin/kill -HUP $MAINPID
 KillMode=mixed
 TimeoutStopSec=10

systemd/aitbc-monitor.service

@@ -12,7 +12,7 @@ EnvironmentFile=/etc/aitbc/.env
 EnvironmentFile=/etc/aitbc/node.env
 
 # Monitor execution
-ExecStart=/opt/aitbc/venv/bin/python /opt/aitbc/services/monitor.py
+ExecStart=/opt/aitbc/venv/bin/python /opt/aitbc/apps/monitor/monitor.py
 
 # Production reliability
 Restart=always