docs: gap-review round 1 — reconcile supporting docs + close spec gaps
Fix 10 gaps found by fresh-eyes review:
- CRITICAL: mechanics doc still documented send-keys-relay/Agent-SDK delivery
and the Notification hook; rewrote DELIVER to the navigator model, dropped
Notification throughout
- HIGH: decisions.md + related-work.md still referenced priority "ranking",
/reply dispatch, send-keys/SDK delivery, and the dead plan/question/idle
reason taxonomy; aligned to FIFO + navigation + permission/stopped
- collector and daemon stated as one process; pull-not-broadcast presentation
- added trust boundary (loopback-only ingest, single-host trust assumption)
- resolved auto-advance focus-steal hazard (operator-initiated jump) and
specified skip re-ordering (move to tail + cooldown) to avoid livelock
- downgraded SessionEnd to "not yet probed" (probe only saw SessionStart/Stop)
- dropped forked collector's WebSocket layer; most-stuck → oldest-stuck (FIFO)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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