feat: implement AITBC mesh network deployment infrastructure

✅ Phase 0: Pre-implementation checklist completed
- Environment configurations (dev/staging/production)
- Directory structure setup (logs, backups, monitoring)
- Virtual environment with dependencies

✅ Master deployment script created
- Single command deployment with validation
- Progress tracking and rollback capability
- Health checks and deployment reporting

✅ Validation script created
- Module import validation
- Basic functionality testing
- Configuration and script verification

✅ Implementation fixes
- Fixed dataclass import in consensus keys
- Fixed async function syntax in tests
- Updated deployment script for virtual environment

🚀 Ready for deployment: ./scripts/deploy-mesh-network.sh dev

backups/pre_deployment_20260402_120549/config/.env.example

@@ -0,0 +1,58 @@
+# AITBC Central Environment Example Template
+# SECURITY NOTICE: Use a secrets manager for production. Do not commit real secrets.
+# Run: python config/security/environment-audit.py --format text
+
+# =========================
+# Blockchain core
+# =========================
+chain_id=ait-mainnet
+supported_chains=ait-mainnet
+rpc_bind_host=0.0.0.0
+rpc_bind_port=8006
+p2p_bind_host=0.0.0.0
+p2p_bind_port=8005
+proposer_id=aitbc1genesis
+proposer_key=changeme_hex_private_key
+keystore_path=/var/lib/aitbc/keystore
+keystore_password_file=/var/lib/aitbc/keystore/.password
+gossip_backend=broadcast
+gossip_broadcast_url=redis://127.0.0.1:6379
+db_path=/var/lib/aitbc/data/ait-mainnet/chain.db
+mint_per_unit=0
+coordinator_ratio=0.05
+block_time_seconds=60
+enable_block_production=true
+
+# =========================
+# Coordinator API
+# =========================
+APP_ENV=production
+APP_HOST=127.0.0.1
+APP_PORT=8011
+DATABASE__URL=sqlite:///./data/coordinator.db
+BLOCKCHAIN_RPC_URL=http://127.0.0.1:8026
+ALLOW_ORIGINS=["http://localhost:8011","http://localhost:8000","http://8026"]
+JOB_TTL_SECONDS=900
+HEARTBEAT_INTERVAL_SECONDS=10
+HEARTBEAT_TIMEOUT_SECONDS=30
+RATE_LIMIT_REQUESTS=60
+RATE_LIMIT_WINDOW_SECONDS=60
+CLIENT_API_KEYS=["client_prod_key_use_real_value"]
+MINER_API_KEYS=["miner_prod_key_use_real_value"]
+ADMIN_API_KEYS=["admin_prod_key_use_real_value"]
+HMAC_SECRET=change_this_to_a_32_byte_random_secret
+JWT_SECRET=change_this_to_another_32_byte_random_secret
+
+# =========================
+# Marketplace Web
+# =========================
+VITE_MARKETPLACE_DATA_MODE=live
+VITE_MARKETPLACE_API=/api
+VITE_MARKETPLACE_ENABLE_BIDS=true
+VITE_MARKETPLACE_REQUIRE_AUTH=false
+
+# =========================
+# Notes
+# =========================
+# For production: move secrets to a secrets manager and reference via secretRef
+# Validate config: python config/security/environment-audit.py --format text