feat(sentry): a quiet fire collapses to a one-line heartbeat

A sentry fire whose passes all probe-skip or no-op now writes a single "sentry at HH:MM: nothing" line instead of a full per-pass digest block. A fire that runs or queues anything writes the full digest as before. This is Phase 1 of the silent-until-signal policy. The live trial's fires 3-8 were walls of no-op digests, the noise this removes.

The "no silent skip" discipline is reconciled, not broken: inside a working fire every pass still writes its ran/skipped line, and a quiet fire's heartbeat is the explicit "nothing to do" record rather than a hidden skip.

1 files changed, 1 insertions, 1 deletions

diff --git a/todo.org b/todo.org
index 03d209d..ea69ba4 100644
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@@ -186,7 +186,7 @@ Awaiting Craig's deep read of the spec (DRAFT → READY gate). Two decisions sti
 ** TODO [#B] Silent-until-signal for in-session monitor loops :feature:spec:
 Spec: [[file:docs/specs/2026-07-20-silent-until-signal-monitors-spec.org][docs/specs/2026-07-20-silent-until-signal-monitors-spec.org]] (DRAFT, ID af592bd6-d3e6-47e2-8804-2a287b4d9303). Decisions resolved live with Craig 2026-07-20; awaiting his deep read for DRAFT → READY.
 
-Craig-approved proposal from .emacs.d (2026-07-20), demonstrated by the sentry live trial (fires 3-8 were walls of no-op lines). Reframed live from a watcher *mechanism* to a *policy*: an in-session monitor fire detects first, and on an empty check collapses to one labelled heartbeat line (=<workflow> at HH:MM: nothing=) instead of a full turn; only a real item earns the full surface-and-judge turn. Keeping detection in-session dissolves the MCP-auth split (triage's Gmail/Slack/Linear need session auth), so it applies uniformly to sentry, auto triage-intake, and auto inbox-zero. No external watcher, no new seen-list. Five build phases in the spec (sentry heartbeat first — separable and highest-value). Overlaps the sentry cluster ([[file:todo.org::*Sentry vNext passes][Sentry vNext passes]], [[file:todo.org::*Triage source activation][Triage source activation]]).
+Craig-approved proposal from .emacs.d (2026-07-20), demonstrated by the sentry live trial (fires 3-8 were walls of no-op lines). Reframed live from a watcher *mechanism* to a *policy*: an in-session monitor fire detects first, and on an empty check collapses to one labelled heartbeat line (=<workflow> at HH:MM: nothing=) instead of a full turn; only a real item earns the full surface-and-judge turn. Keeping detection in-session dissolves the MCP-auth split (triage's Gmail/Slack/Linear need session auth), so it applies uniformly to sentry, auto triage-intake, and auto inbox-zero. No external watcher, no new seen-list. Five build phases in the spec. Phase 1 (sentry quiet-fire heartbeat) shipped 2026-07-20 ahead of the full READY gate at Craig's direction — a quiet fire now collapses to =sentry at HH:MM: nothing=. Phases 2-4 (auto triage-intake, auto inbox-zero, shared-policy home) + Phase 5 verification pending Craig's spec read. Overlaps the sentry cluster ([[file:todo.org::*Sentry vNext passes][Sentry vNext passes]], [[file:todo.org::*Triage source activation][Triage source activation]]).
 
 ** TODO [#D] Research: MCP for device locations shared with you :feature:
 From .emacs.d (2026-07-20, rulesets-owned research). Is there a Google Maps MCP (or similar) that reports the locations of devices sharing their location with you? If none exists, research how hard it would be to build one. (Google's location-sharing has no official public API; likely needs investigation of unofficial routes or a different provider.)