```

chore: enhance .gitignore and remove obsolete documentation files

- Reorganize .gitignore with categorized sections for better maintainability
- Add comprehensive ignore patterns for Python, Node.js, databases, logs, and build artifacts
- Add project-specific ignore rules for coordinator, explorer, and deployment files
- Remove outdated documentation: BITCOIN-WALLET-SETUP.md, LOCAL_ASSETS_SUMMARY.md, README-CONTAINER-DEPLOYMENT.md, README-DOMAIN-DEPLOYMENT.md
```

systemd/aitbc-coordinator-api.service

@@ -0,0 +1,22 @@
+[Unit]
+Description=AITBC Coordinator API Service
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=oib
+Group=oib
+WorkingDirectory=/home/oib/windsurf/aitbc/apps/coordinator-api
+Environment=PATH=/home/oib/windsurf/aitbc/apps/coordinator-api/.venv/bin
+Environment=PYTHONPATH=/home/oib/windsurf/aitbc/apps/coordinator-api/src
+ExecStart=/home/oib/windsurf/aitbc/apps/coordinator-api/.venv/bin/python -m uvicorn app.main:app --host 0.0.0.0 --port 8000
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-coordinator-api
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-coordinator-proxy-health.service

@@ -0,0 +1,8 @@
+[Unit]
+Description=AITBC Coordinator Proxy Health Check
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=oneshot
+ExecStart=/home/oib/windsurf/aitbc/scripts/check_coordinator_proxy.sh

systemd/aitbc-coordinator-proxy-health.timer

@@ -0,0 +1,10 @@
+[Unit]
+Description=Run AITBC Coordinator Proxy Health Check
+
+[Timer]
+OnBootSec=2min
+OnUnitActiveSec=1min
+Unit=aitbc-coordinator-proxy-health.service
+
+[Install]
+WantedBy=timers.target

systemd/aitbc-exchange-api.service

@@ -0,0 +1,21 @@
+[Unit]
+Description=AITBC Exchange API Service
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=root
+Group=root
+WorkingDirectory=/root/aitbc/apps/trade-exchange
+Environment=PATH=/root/aitbc/.venv/bin
+ExecStart=/root/aitbc/.venv/bin/python simple_exchange_api.py
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-exchange-api
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-exchange-frontend.service

@@ -0,0 +1,21 @@
+[Unit]
+Description=AITBC Exchange Frontend Service
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=root
+Group=root
+WorkingDirectory=/root/aitbc/apps/trade-exchange
+Environment=PATH=/root/aitbc/.venv/bin
+ExecStart=/root/aitbc/.venv/bin/python server.py --port 3002
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-exchange-frontend
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-gpu-miner-root.service

@@ -0,0 +1,22 @@
+[Unit]
+Description=AITBC GPU Miner Client
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=root
+Group=root
+WorkingDirectory=/home/oib/windsurf/aitbc
+Environment=PYTHONPATH=/home/oib/windsurf/aitbc
+ExecStart=/usr/bin/python3 /home/oib/windsurf/aitbc/gpu_miner_with_wait.py
+Restart=on-failure
+RestartSec=30
+StartLimitInterval=300
+StartLimitBurst=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-gpu-miner
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-gpu-miner.service

@@ -0,0 +1,28 @@
+[Unit]
+Description=AITBC GPU Miner Client
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=debian
+Group=debian
+WorkingDirectory=/home/debian/aitbc
+Environment=PYTHONPATH=/home/debian/aitbc
+ExecStart=/home/debian/aitbc/venv/bin/python /home/debian/aitbc/gpu_miner_simple.py
+Restart=on-failure
+RestartSec=30
+StartLimitInterval=300
+StartLimitBurst=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-gpu-miner
+
+# Security settings
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ReadWritePaths=/home/debian/aitbc
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-gpu-registry.service

@@ -0,0 +1,19 @@
+[Unit]
+Description=AITBC GPU Registry Demo
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=oib
+Group=oib
+WorkingDirectory=/home/oib/windsurf/aitbc
+ExecStart=/usr/bin/python3 /home/oib/windsurf/aitbc/gpu_registry_demo.py
+Restart=always
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-gpu-registry
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-host-gpu-miner.service

@@ -0,0 +1,27 @@
+[Unit]
+Description=AITBC Host GPU Miner Client
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=oib
+Group=oib
+WorkingDirectory=/home/oib/windsurf/aitbc
+Environment=PYTHONPATH=/home/oib/windsurf/aitbc
+Environment=VIRTUAL_ENV=/home/oib/windsurf/aitbc/.venv
+Environment=PYTHONUNBUFFERED=1
+Environment=PYTHONIOENCODING=utf-8
+Environment=FORCE_COLOR=1
+Environment=PATH=/home/oib/windsurf/aitbc/.venv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ExecStart=/bin/bash -c 'exec /home/oib/windsurf/aitbc/.venv/bin/python -u /home/oib/windsurf/aitbc/scripts/gpu/gpu_miner_host.py 2>&1 | tee -a /home/oib/windsurf/aitbc/logs/host_gpu_miner.log'
+Restart=on-failure
+RestartSec=30
+StartLimitInterval=300
+StartLimitBurst=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-host-gpu-miner
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-node.service

@@ -0,0 +1,23 @@
+[Unit]
+Description=AITBC Blockchain Node Service
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=root
+Group=root
+WorkingDirectory=/root/aitbc/apps/node
+Environment=PATH=/root/aitbc/.venv/bin
+Environment=PYTHONPATH=/root/aitbc/apps/node
+Environment=RUST_LOG=info
+ExecStart=/root/aitbc/.venv/bin/python -m node.main --datadir /root/aitbc/data --rpc-bind 0.0.0.0:8545
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-node
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-wallet.service

@@ -0,0 +1,22 @@
+[Unit]
+Description=AITBC Wallet Daemon Service
+After=network.target
+Wants=network.target
+
+[Service]
+Type=simple
+User=root
+Group=root
+WorkingDirectory=/root/aitbc/apps/wallet-daemon
+Environment=PATH=/root/aitbc/.venv/bin
+Environment=PYTHONPATH=/root/aitbc/apps/wallet-daemon
+ExecStart=/root/aitbc/.venv/bin/python -m wallet_daemon.main --host 0.0.0.0 --port 8001
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=5
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-wallet
+
+[Install]
+WantedBy=multi-user.target