- Add read_blockchain_env helper to parse /etc/aitbc/blockchain.env configuration - Add normalize_rpc_url helper to parse and normalize RPC endpoint URLs - Add probe_rpc_node to query /health and /rpc/head endpoints with latency tracking - Add get_network_snapshot to probe local node and p2p_peers from config - Update network status to show real connected node count and sync status - Update network peers to show actual peer endpoints and connection