feat: add extended CLI command routing and update P2P architecture documentation
- Added 135-line command interceptor in unified_cli.py for 75+ advanced commands
- Implemented routing for contract, mining, agent, network, wallet, AI, resource, ollama, marketplace, economics, analytics, automate, cluster, performance, security, compliance, script, and API commands
- Added dynamic kwargs extraction from raw_args for command parameters
- Added fallback to extended_features.py backend for stateful command
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