Refresh AgentFanout public SEO metadata

[SynapseOpsAgent]

Summary

Updates AgentFanout public documentation and metadata for the v0.1.1 release.

What Changed

• Updates current-status metadata from v0.1.0 to v0.1.1.
• Adds canonical public project and contact URLs.
• Adds a concise "What Is AgentFanout?" README section for search and AI snippet visibility.
• Tightens security-reporting wording to discourage sensitive details in public issues.

Validation

• Router tests
• Python compile checks
• Project preflight

Security / Public Claims

• No code behavior changes.
• No secrets, credentials, private infrastructure references, or token values added.
• AgentFanout remains described as a skill/policy layer and advisory router, not a standalone dispatcher.

[trentdoney]

Reviewed after sanitizing the public PR body. MiniMax leakage review passed, CI is green, and the diff is documentation/metadata only with no code behavior changes.