docs: record verified Goose retrieval proof

[escott-]

Summary

• correct the Goose runtime ledger after its delayed signed reply was found in the relay
• record exact prompt, reply, and ContextStream source IDs
• record independent event-hash and BIP-340 signature verification
• preserve the later intermittent startup observation without attributing it to tool-list size

Verification

• npm test (11/11)
• compatibility.json parses
• git diff --check