feat(moments): a mount that keeps arriving where it does not apply proposes its own removal (milestone 458 step 7b, #4955)

The open-after-moment signal proposes a mount; nothing proposed taking one
off, so a wrong mount was noise at every occurrence until someone happened
to notice. rule_misfired(rule_id, moment, why, reached_by) records a report
against a MOUNTED pair, counted per distinct day (the MCP door carries no
session id) on a new rule_moment_judgments.misfire column (migration 0119,
backup v24). At three days the response carries a line asking the agent to
offer the operator the fix - reject takes the rule off, unmap_action stops
the action reaching the moment, confirm keeps the mount and stops the
asking - and Settings > Moments lists it as an unmount proposal with the
reasons and the actions that reached it. A re-mount clears the count.

Taught in moments.md, missed-retrieval.md and the reply hold's wording.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

plugin/skills/using-scribe/moments.md

@@ -2,7 +2,8 @@
 
 Part of the using-scribe skill. Read it when a line says a rule arrived *at* a
 moment, when a reply is held for one read, when an action reached the wrong
-moment or none, and when a line proposes mounting a rule.
+moment or none, when a mounted rule arrived and did not apply, and when a line
+proposes mounting or unmounting a rule.
 
 ## What a moment is
 
@@ -50,6 +51,26 @@ is a deliver and nothing fired — map it?"), and make it on their yes. The
 correction lasts for every later session on the install; `list_moments` shows
 what each action reaches now.
 
+## When a mounted rule arrives and does not apply
+
+A mount delivers its rule at every occurrence of the moment, so a mount that
+is wrong is noise every time — and a rule you read and set aside leaves no
+trace anyone else can see. When a rule arrived *at* a moment, you read it,
+and it has nothing to do with what you were doing there, say so with
+`rule_misfired(rule_id, moment, why, reached_by)`: one call, nothing asked of
+the operator. Name the action the line said reached the moment, and say what
+you were doing, because the reports are what the operator decides from —
+whether the rule does not belong at the moment, or one action is reaching it
+that is not that moment here.
+
+Reports gather across days. Once a rule has them on three, the response
+carries a line asking you to offer the fix, and the operator sees it under
+Settings › Moments too: `judge_rule_moments` `reject` takes the rule off,
+`unmap_action` stops the action reaching the moment, and `confirm` keeps the
+mount and ends the question. A rule that applied — even one you were already
+following — is not a misfire, and a rule that arrived by its words rather
+than a mount is fixed through its trigger instead.
+
 ## When a line proposes a mount
 
 A rule that keeps being opened just after the same moment, across several