Update Python version requirements and fix compatibility issues

- Bump minimum Python version from 3.11 to 3.13 across all apps
- Add Python 3.11-3.13 test matrix to CLI workflow
- Document Python 3.11+ requirement in .env.example
- Fix Starlette Broadcast removal with in-process fallback implementation
- Add _InProcessBroadcast class for tests when Starlette Broadcast is unavailable
- Refactor API key validators to read live settings instead of cached values
- Update database models with explicit

systemd/aitbc-adaptive-learning.service

@@ -0,0 +1,38 @@
+[Unit]
+Description=AITBC Adaptive Learning Service (Port 8005)
+Documentation=https://docs.aitbc.bubuit.net
+After=network.target aitbc-coordinator-api.service
+Wants=aitbc-coordinator-api.service
+
+[Service]
+Type=simple
+User=aitbc
+Group=aitbc
+WorkingDirectory=/opt/aitbc/apps/coordinator-api
+Environment=PYTHONPATH=/opt/aitbc/apps/coordinator-api/src
+Environment=PORT=8005
+Environment=SERVICE_TYPE=adaptive-learning
+Environment=LEARNING_MODE=online
+Environment=LOG_LEVEL=INFO
+ExecStart=/opt/aitbc/.venv/bin/python -m aitbc_adaptive_learning.main
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-adaptive-learning
+
+# Security settings
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/opt/aitbc/logs /opt/aitbc/data /opt/aitbc/models
+LimitNOFILE=65536
+
+# Resource limits
+MemoryMax=3G
+CPUQuota=250%
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-coordinator-api.service

@@ -1,5 +1,5 @@
 [Unit]
-Description=AITBC Coordinator API Service
+Description=AITBC Coordinator API Service (Python 3.11+)
 After=network.target
 Wants=network.target
 
@@ -10,6 +10,8 @@ Group=oib
 WorkingDirectory=/opt/coordinator-api
 Environment=PATH=/opt/coordinator-api/.venv/bin
 Environment=PYTHONPATH=/opt/coordinator-api/src
+# Python version validation
+ExecStartPre=/bin/bash -c "python3.11 --version || (echo 'Python 3.11+ required' && exit 1)"
 ExecStart=/opt/coordinator-api/.venv/bin/python -m uvicorn app.main:app --host 0.0.0.0 --port 8000
 ExecReload=/bin/kill -HUP $MAINPID
 Restart=always

systemd/aitbc-exchange-api.service

@@ -1,5 +1,5 @@
 [Unit]
-Description=AITBC Exchange API Service
+Description=AITBC Exchange API Service (Python 3.11+)
 After=network.target
 Wants=network.target
 
@@ -9,6 +9,8 @@ User=root
 Group=root
 WorkingDirectory=/opt/exchange-api
 Environment=PATH=/opt/exchange-api/.venv/bin
+# Python version validation
+ExecStartPre=/bin/bash -c "python3.11 --version || (echo 'Python 3.11+ required' && exit 1)"
 ExecStart=/opt/exchange-api/.venv/bin/python simple_exchange_api.py
 ExecReload=/bin/kill -HUP $MAINPID
 Restart=always

systemd/aitbc-gpu-multimodal.service

@@ -0,0 +1,43 @@
+[Unit]
+Description=AITBC GPU Multi-Modal Service (Port 8003)
+Documentation=https://docs.aitbc.bubuit.net
+After=network.target aitbc-coordinator-api.service nvidia-persistenced.service
+Wants=aitbc-coordinator-api.service
+
+[Service]
+Type=simple
+User=aitbc
+Group=aitbc
+WorkingDirectory=/opt/aitbc/apps/coordinator-api
+Environment=PYTHONPATH=/opt/aitbc/apps/coordinator-api/src
+Environment=PORT=8003
+Environment=SERVICE_TYPE=gpu-multimodal
+Environment=GPU_ENABLED=true
+Environment=CUDA_VISIBLE_DEVICES=0
+Environment=LOG_LEVEL=INFO
+ExecStart=/opt/aitbc/.venv/bin/python -m aitbc_gpu_multimodal.main
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-gpu-multimodal
+
+# Security settings
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/opt/aitbc/logs /opt/aitbc/data /dev/nvidia*
+LimitNOFILE=65536
+
+# GPU access
+DeviceAllow=/dev/nvidia*
+DevicePolicy=auto
+
+# Resource limits
+MemoryMax=4G
+CPUQuota=300%
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-marketplace-enhanced.service

@@ -0,0 +1,40 @@
+[Unit]
+Description=AITBC Enhanced Marketplace Service (Port 8006)
+Documentation=https://docs.aitbc.bubuit.net
+After=network.target aitbc-coordinator-api.service postgresql.service
+Wants=aitbc-coordinator-api.service postgresql.service
+
+[Service]
+Type=simple
+User=aitbc
+Group=aitbc
+WorkingDirectory=/opt/aitbc/apps/coordinator-api
+Environment=PYTHONPATH=/opt/aitbc/apps/coordinator-api/src
+Environment=PORT=8006
+Environment=SERVICE_TYPE=marketplace-enhanced
+Environment=DATABASE_URL=postgresql://aitbc:password@localhost:5432/aitbc
+Environment=ROYALTY_ENABLED=true
+Environment=LICENSING_ENABLED=true
+Environment=LOG_LEVEL=INFO
+ExecStart=/opt/aitbc/.venv/bin/python -m aitbc_marketplace_enhanced.main
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-marketplace-enhanced
+
+# Security settings
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/opt/aitbc/logs /opt/aitbc/data
+LimitNOFILE=65536
+
+# Resource limits
+MemoryMax=2G
+CPUQuota=200%
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-modality-optimization.service

@@ -0,0 +1,37 @@
+[Unit]
+Description=AITBC Modality Optimization Service (Port 8004)
+Documentation=https://docs.aitbc.bubuit.net
+After=network.target aitbc-coordinator-api.service
+Wants=aitbc-coordinator-api.service
+
+[Service]
+Type=simple
+User=aitbc
+Group=aitbc
+WorkingDirectory=/opt/aitbc/apps/coordinator-api
+Environment=PYTHONPATH=/opt/aitbc/apps/coordinator-api/src
+Environment=PORT=8004
+Environment=SERVICE_TYPE=modality-optimization
+Environment=LOG_LEVEL=INFO
+ExecStart=/opt/aitbc/.venv/bin/python -m aitbc_modality_optimization.main
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-modality-optimization
+
+# Security settings
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/opt/aitbc/logs /opt/aitbc/data
+LimitNOFILE=65536
+
+# Resource limits
+MemoryMax=1G
+CPUQuota=150%
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-multimodal.service

@@ -0,0 +1,37 @@
+[Unit]
+Description=AITBC Multi-Modal Agent Service (Port 8002)
+Documentation=https://docs.aitbc.bubuit.net
+After=network.target aitbc-coordinator-api.service
+Wants=aitbc-coordinator-api.service
+
+[Service]
+Type=simple
+User=aitbc
+Group=aitbc
+WorkingDirectory=/opt/aitbc/apps/coordinator-api
+Environment=PYTHONPATH=/opt/aitbc/apps/coordinator-api/src
+Environment=PORT=8002
+Environment=SERVICE_TYPE=multimodal
+Environment=LOG_LEVEL=INFO
+ExecStart=/opt/aitbc/.venv/bin/python -m aitbc_multimodal.main
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-multimodal
+
+# Security settings
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/opt/aitbc/logs /opt/aitbc/data
+LimitNOFILE=65536
+
+# Resource limits
+MemoryMax=2G
+CPUQuota=200%
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-node.service

@@ -1,5 +1,5 @@
 [Unit]
-Description=AITBC Blockchain Node Service
+Description=AITBC Blockchain Node Service (Python 3.11+)
 After=network.target
 Wants=network.target
 
@@ -11,6 +11,8 @@ 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 "python3.11 --version || (echo 'Python 3.11+ 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

systemd/aitbc-openclaw-enhanced.service

@@ -0,0 +1,39 @@
+[Unit]
+Description=AITBC OpenClaw Enhanced Service (Port 8007)
+Documentation=https://docs.aitbc.bubuit.net
+After=network.target aitbc-coordinator-api.service
+Wants=aitbc-coordinator-api.service
+
+[Service]
+Type=simple
+User=aitbc
+Group=aitbc
+WorkingDirectory=/opt/aitbc/apps/coordinator-api
+Environment=PYTHONPATH=/opt/aitbc/apps/coordinator-api/src
+Environment=PORT=8007
+Environment=SERVICE_TYPE=openclaw-enhanced
+Environment=EDGE_COMPUTING_ENABLED=true
+Environment=AGENT_ORCHESTRATION_ENABLED=true
+Environment=LOG_LEVEL=INFO
+ExecStart=/opt/aitbc/.venv/bin/python -m aitbc_openclaw_enhanced.main
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=always
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=aitbc-openclaw-enhanced
+
+# Security settings
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/opt/aitbc/logs /opt/aitbc/data
+LimitNOFILE=65536
+
+# Resource limits
+MemoryMax=2G
+CPUQuota=200%
+
+[Install]
+WantedBy=multi-user.target

systemd/aitbc-wallet.service

@@ -1,5 +1,5 @@
 [Unit]
-Description=AITBC Wallet Daemon Service
+Description=AITBC Wallet Daemon Service (Python 3.11+)
 After=network.target
 Wants=network.target
 
@@ -10,6 +10,8 @@ Group=root
 WorkingDirectory=/opt/wallet-daemon
 Environment=PATH=/opt/wallet-daemon/.venv/bin
 Environment=PYTHONPATH=/opt/wallet-daemon
+# Python version validation
+ExecStartPre=/bin/bash -c "python3.11 --version || (echo 'Python 3.11+ required' && exit 1)"
 ExecStart=/opt/wallet-daemon/.venv/bin/python -m wallet_daemon.main --host 0.0.0.0 --port 8001
 ExecReload=/bin/kill -HUP $MAINPID
 Restart=always