Free2PA v0.4.0 - Protected Hello World Agent

Free2PA v0.4.0 adds a complete, runnable Azure-hosted Hello World agent that makes the load boundary visible. Its signed SOUL.md allows only optimistic greetings. The comparison lane shows a bitter edit reaching an unchecked model; Block prevents protected inference, and Repair verifies and recovers the signed optimistic soul before a fresh model call. The release also includes the real HTTP comparison endpoint, three signed trust fixtures, 20 automated tests, a first-run example, and an explicit favicon for a clean judge experience. Core signing, verification, trust, MCP, load gate, and repair remain model-independent. Operators provide their own optional OpenAI or Azure OpenAI account.\n\nSHA-256: 55d141b24ae36900c559c01445c820f04a6bf05bde92501e8c3e5c8b017b48bb