Standardize config files: use blockchain.env and node.env instead of .env

- Update CLI config to load from /etc/aitbc/blockchain.env
- Update operational-features.md documentation
- Update setup.sh to create/use blockchain.env
- Update utility scripts (setup-credentials, migrate_secrets, generate_unique_node_ids, chain_regen_node, load-keystore-secrets)
- Update workflow scripts (01_preflight_setup, hermes preflight setups)
- Maintain backward compatibility for existing deployments

scripts/workflow/01_preflight_setup.sh

@@ -13,18 +13,18 @@ systemctl stop aitbc-blockchain-* 2>/dev/null || true
 # 2. Update ALL systemd configurations (main files + drop-ins + overrides)
 echo "2. Updating systemd configurations..."
 # Update main service files
-sed -i 's|EnvironmentFile=/opt/aitbc/.env|EnvironmentFile=/etc/aitbc/.env|g' /opt/aitbc/systemd/aitbc-blockchain-*.service
+sed -i 's|EnvironmentFile=/opt/aitbc/.env|EnvironmentFile=/etc/aitbc/blockchain.env|g' /opt/aitbc/systemd/aitbc-blockchain-*.service
 # Update drop-in configs
-find /etc/systemd/system/aitbc-blockchain-*.service.d/ -name "10-central-env.conf" -exec sed -i 's|EnvironmentFile=/opt/aitbc/.env|EnvironmentFile=/etc/aitbc/.env|g' {} \; 2>/dev/null || true
+find /etc/systemd/system/aitbc-blockchain-*.service.d/ -name "10-central-env.conf" -exec sed -i 's|EnvironmentFile=/opt/aitbc/.env|EnvironmentFile=/etc/aitbc/blockchain.env|g' {} \; 2>/dev/null || true
 # Fix override configs (wrong venv paths)
 find /etc/systemd/system/aitbc-blockchain-*.service.d/ -name "override.conf" -exec sed -i 's|/opt/aitbc/apps/blockchain-node/.venv/bin/python3|/opt/aitbc/venv/bin/python3|g' {} \; 2>/dev/null || true
 systemctl daemon-reload
 
 # 3. Create central configuration file
 echo "3. Setting up central configuration file..."
-cp /opt/aitbc/.env /etc/aitbc/.env.backup 2>/dev/null || true
-# Ensure .env is in the correct location (already should be)
-mv /opt/aitbc/.env /etc/aitbc/.env 2>/dev/null || true
+cp /opt/aitbc/.env /etc/aitbc/blockchain.env.backup 2>/dev/null || true
+# Ensure blockchain.env is in the correct location
+mv /opt/aitbc/.env /etc/aitbc/blockchain.env 2>/dev/null || true
 
 # 4. Setup AITBC CLI tool
 echo "4. Setting up AITBC CLI tool..."
@@ -48,7 +48,7 @@ chmod 600 /var/lib/aitbc/keystore/.password
 # 7. Verify setup
 echo "7. Verifying setup..."
 aitbc --help 2>/dev/null || echo "CLI available but limited commands"
-ls -la /etc/aitbc/.env
+ls -la /etc/aitbc/blockchain.env
 
 echo "✅ Pre-flight setup completed successfully!"
 echo "System is ready for multi-node blockchain deployment."