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Six decisions recorded in §7, replacing the matching open questions: signed messages (identity from the key, extending identity-from-connection across the broker), target-host-owned profiles advertised via presence, repo provisioning by pinned forge clone, live-only asks with TTL + TOO_LATE notice, spawn-id dedup on the target, and broker-outage semantics (local unaffected, remote fails fast, gateway stays soft-state). §8 keeps what is genuinely still open, with control *authorization* now separated from the resolved *authenticity*. The broker-level half (U8 broadcast, exclusive consumers, inbox caps, TLS, schema version, trace id) lands in wiki chapter 10 §10 — pointer bumped (also picks up 1710a77, chapter 11 Features). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013ZGgxLQ2VpwZhEYoru8rkf