refactor: merge .env.production into central .env and standardize paths

- Merge blockchain-node/.env.production into central /opt/aitbc/.env
- Update all blockchain paths to use standardized /var/lib/aitbc/ structure
- Remove separate .env.production file (merged into central config)
- Update systemd services to remove references to .env.production
- Standardize Coordinator API paths and RPC port (8006)
- Add trusted_proposers setting for follower nodes
- Update multi-node workflow to reflect merged configuration
- Use aitbc1genesis as default proposer in central .env
- All services now use single central .env file with standardized paths

This eliminates configuration file duplication and ensures consistent
directory structure across all AITBC services.

.windsurf/workflows/multi-node-blockchain-setup.md

@@ -80,6 +80,7 @@ cp keystore/* /var/lib/aitbc/keystore/
 
 # Update systemd services to use central .env and standard paths
 # Note: systemd services already reference /opt/aitbc/.env by default
+# The separate .env.production file has been merged into central .env
 # No need to modify EnvironmentFile as they should use the central .env
 # Just ensure the paths in .env are correct for the standard directory structure
 
@@ -270,11 +271,13 @@ cp /opt/aitbc/.env.aitbc.backup /opt/aitbc/.env   # aitbc
 
 ### Service Configuration
 
-- **Environment File**: All services use `/opt/aitbc/.env` (no separate config files)
+- **Environment File**: All services use `/opt/aitbc/.env` (merged from .env.production)
 - **Virtual Environment**: Central venv at `/opt/aitbc/venv`
 - **Database Files**: `/var/lib/aitbc/data`
 - **Wallet Credentials**: `/var/lib/aitbc/keystore`
 - **Service Logs**: `/var/log/aitbc/` via journald
+- **Standardized Paths**: All paths use `/var/lib/aitbc/` structure
+- **No Separate Config Files**: `.env.production` merged into central `.env`
 
 ## Troubleshooting
 

systemd/aitbc-blockchain-node.service

@@ -10,7 +10,6 @@ WorkingDirectory=/opt/aitbc/apps/blockchain-node
 EnvironmentFile=/opt/aitbc/.env
 Environment=PATH=/usr/bin:/usr/local/bin:/usr/bin:/bin
 Environment=PYTHONPATH=/opt/aitbc/apps/blockchain-node/src:/opt/aitbc/apps/blockchain-node/scripts
-EnvironmentFile=/opt/aitbc/apps/blockchain-node/.env.production
 ExecStart=/opt/aitbc/venv/bin/python -m aitbc_chain.combined_main
 Restart=always
 RestartSec=5

systemd/aitbc-blockchain-p2p.service

@@ -9,7 +9,6 @@ Group=root
 WorkingDirectory=/opt/aitbc/apps/blockchain-node
 Environment=PATH=/usr/bin:/usr/local/bin:/usr/bin:/bin
 Environment=PYTHONPATH=/opt/aitbc/apps/blockchain-node/src:/opt/aitbc/apps/blockchain-node/scripts
-EnvironmentFile=/opt/aitbc/apps/blockchain-node/.env.production
 ExecStart=/usr/bin/python3 -m aitbc_chain.p2p_network --host ${p2p_bind_host} --port ${p2p_bind_port} --redis ${gossip_broadcast_url} --node-id ${proposer_id}
 Restart=always
 RestartSec=5

systemd/aitbc-blockchain-rpc.service

@@ -10,7 +10,6 @@ WorkingDirectory=/opt/aitbc/apps/blockchain-node
 EnvironmentFile=/opt/aitbc/.env
 Environment=PATH=/usr/bin:/usr/local/bin:/usr/bin:/bin
 Environment=PYTHONPATH=/opt/aitbc/apps/blockchain-node/src:/opt/aitbc/apps/blockchain-node/scripts
-EnvironmentFile=/opt/aitbc/apps/blockchain-node/.env.production
 ExecStart=/usr/bin/python3 -m uvicorn aitbc_chain.app:app --host ${rpc_bind_host} --port ${rpc_bind_port}
 Restart=always
 RestartSec=5

systemd/aitbc-blockchain-sync.service

@@ -10,7 +10,6 @@ WorkingDirectory=/opt/aitbc/apps/blockchain-node
 EnvironmentFile=/opt/aitbc/.env
 Environment=PATH=/usr/bin:/usr/local/bin:/usr/bin:/bin
 Environment=PYTHONPATH=/opt/aitbc/apps/blockchain-node/src:/opt/aitbc/apps/blockchain-node/scripts
-EnvironmentFile=/opt/aitbc/apps/blockchain-node/.env.production
 ExecStart=/usr/bin/python3 -m aitbc_chain.chain_sync --redis redis://localhost:6379 --node-id ait18yefwwclgmyu2a74zvv0hj3a3xw6gxsn4akrj963kp069j9xy5ns3kurun --rpc-port 8006 --leader-host 10.1.223.40 --source-host 10.1.223.40 --source-port 8006 --import-host 10.1.223.40 --import-port 8006
 Restart=always
 RestartSec=5