chore(cleanup): remove obsolete scripts and update paths for production deployment

- Remove dev/scripts/check-file-organization.sh (obsolete organization checker)
- Remove dev/scripts/community_onboarding.py (unused 559-line automation script)
- Update gpu_miner_host.py log path from /home/oib/windsurf/aitbc to /opt/aitbc
- Add service status and standardization badges to README.md

systemd/aitbc-node.service

@@ -1,25 +0,0 @@
-[Unit]
-Description=AITBC Blockchain Node Service (Python 3.13.5+)
-After=network.target
-Wants=network.target
-
-[Service]
-Type=simple
-User=root
-Group=root
-WorkingDirectory=/opt/blockchain-node
-Environment=PATH=/opt/blockchain-node/.venv/bin
-Environment=PYTHONPATH=/opt/blockchain-node
-Environment=RUST_LOG=info
-# Python version validation
-ExecStartPre=/bin/bash -c "python3 --version || (echo 'Python 3.13.5+ required' && exit 1)"
-ExecStart=/opt/blockchain-node/.venv/bin/python -m node.main --datadir /opt/blockchain-node/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