refactor: update systemd service configurations for deployment environment changes

- Change user/group from aitbc to debian/root across services
- Update working directories from /opt/aitbc to environment-specific paths
- Modify virtual environment paths to match new deployment structure
- Update blockchain services to use combined_main and add EnvironmentFile directives
- Change adaptive-learning, modality-optimization, multimodal, openclaw-enhanced ports and module paths
- Update marketplace-

systemd/aitbc-blockchain-p2p.service

@@ -0,0 +1,20 @@
+[Unit]
+Description=AITBC Blockchain P2P Network Service
+After=network.target redis.service
+
+[Service]
+Type=simple
+User=root
+Group=root
+WorkingDirectory=/opt/aitbc/apps/blockchain-node
+Environment=PATH=/opt/aitbc/apps/blockchain-node/.venv/bin:/usr/local/bin:/usr/bin:/bin
+Environment=PYTHONPATH=/opt/aitbc/apps/blockchain-node/src:/opt/aitbc/apps/blockchain-node/scripts
+EnvironmentFile=/opt/aitbc/apps/blockchain-node/.env.production
+ExecStart=/opt/aitbc/apps/blockchain-node/.venv/bin/python3 -m aitbc_chain.p2p_network --host ${p2p_bind_host} --port ${p2p_bind_port} --redis ${gossip_broadcast_url} --node-id ${proposer_id}
+Restart=always
+RestartSec=5
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target