refactor: centralize all dynamic data to /opt/aitbc/data directory

- Move blockchain data from apps/blockchain-node/data to centralized data directory
- Update configuration files to reference new data paths
- Remove old data directory structure
- Maintain existing database files and chain data

.env.example

@@ -17,7 +17,7 @@ keystore_path=/opt/aitbc/keystore
 keystore_password_file=/opt/aitbc/keystore/.password
 gossip_backend=broadcast
 gossip_broadcast_url=redis://127.0.0.1:6379
-db_path=/opt/aitbc/apps/blockchain-node/data/ait-mainnet/chain.db
+db_path=/opt/aitbc/data/ait-mainnet/chain.db
 mint_per_unit=0
 coordinator_ratio=0.05
 block_time_seconds=60

apps/blockchain-node/src/aitbc_chain/config.py

@@ -20,7 +20,7 @@ class ChainSettings(BaseSettings):
 
     chain_id: str = ""
     supported_chains: str = "ait-devnet" # Comma-separated list of supported chain IDs
-    db_path: Path = Path("./data/chain.db")
+    db_path: Path = Path("/opt/aitbc/data/chain.db")
 
     rpc_bind_host: str = "127.0.0.1"
     rpc_bind_port: int = 8080

scripts/deploy_enhanced_genesis.py

@@ -36,7 +36,7 @@ def deploy_to_container(container_name, genesis_config):
     print(f"🧹 Clearing existing blockchain data on {container_name}...")
     subprocess.run([
         'ssh', container_name,
-        'sudo rm -f /opt/aitbc/apps/blockchain-node/data/chain.db'
+        'sudo rm -f /opt/aitbc/data/chain.db'
     ], check=False)
     
     # Initialize new genesis