prepare

Add Docker configuration and complete VPS deployment guide

Add Three Markets integration test to verify economy logic

Add enterprise JSON structured logging and Ledger Audit Trail

Add Web3-style Cryptographic Identity (Ed25519 signatures)

Add SQLite persistence to Hub for safe reboots

Add Data Market (Negative Bounties) and Security Switches

Upgrade to Phase 2 (Auction Logic) to save API costs

Add Direct Messaging and Zero-Bounty features

Add L2 client and Reputation logic

Add L1 Hub (FastAPI + WebSocket backend)