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fix(bin): distinguish unreadable away-mode panes from gone ones - #1

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BohnBawerick merged 23 commits into
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fm/fm-stale-unreadable-vs-gone
Aug 18, 2026
Merged

BohnBawerick merged 23 commits into
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fm/fm-stale-unreadable-vs-gone

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@BohnBawerick BohnBawerick commented Aug 18, 2026 •

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Intent

Distinguish a gone pane from a momentarily unreadable one in away-mode housekeeping, so a wedged worker is never silently dropped because one screen capture failed.

Away-mode housekeeping previously treated every fm_backend_capture failure as gone at both the stale-persistence and pause-resurface call sites and dropped the marker with no escalation.

  • A pane that is gone should drop the marker with no escalation and no alarm.
  • A pane that is present but unreadable must not be silently dropped; the operator must learn about it.
  • A capture that fails once and succeeds on retry is the ordinary reading, with no marker churn.
  • Both call sites share one decision helper.
  • Do not reintroduce alarms on torn-down panes.
  • Prefer an explicit noisy failure over a quiet assumption when evidence is absent.

What changed

stale_window_recheck retries a failed capture twice (0.4s apart), then asks fm_backend_agent_state. Only missing is gone. A present dead shell is ordinary idle. Every other state, including an unreadable or unverified probe, escalates and keeps the marker on the same cadence.

Tests cover gone, unreadable-present, retry-then-ordinary, and dead-is-not-gone at both call sites.

This PR is the fork-controlled validation surface. The upstream copy remains kunchenguid#2587 and is not to be closed or re-pushed from this work.

Pipeline

Updates from git push no-mistakes

kunchenguid and others added 23 commits August 13, 2026 09:16
…id#2304)

* fix(guard): stop the false send-time watcher-down alarm on Pi primaries

On a Pi primary the watcher process is not the liveness signal. The Pi
extension tears the watcher down on every actionable wake and spawns the
replacement itself, so the singleton lock is legitimately unheld between
cycles: every one of the 799 cycles in a live primary's ledger ends with
lock_after=pid:none, and a live capture caught the guard verdict flipping to
no-watcher during one hand-off with the beacon 63s old.

bin/fm-guard.sh classified Pi as a persistent-watcher harness, which demands a
live identity-matched lock holder at all times, so any guarded command landing
in a hand-off painted the full WATCHER DOWN - SUPERVISION IS OFF banner and
told firstmate to repair a cycle the extension already owns and is restoring.

Add an extension supervision model for pi and pi-signed. A live
identity-matched watcher stays the ordinary healthy state; an unheld lock is
healthy only while the beacon is fresh within grace AND a live Pi session
provably owns continuity - both primary extensions recorded in their state
markers at their current on-disk builds by the process named in state/.lock,
with that process still alive. Without that proof the banner fires exactly as
before, so an unloaded, version-drifted, or exited Pi session is loud
immediately and a cycle the extension never restores is loud once the beacon
passes grace. The queued-wake warning, the PID-strict turn-end guard, and
every other primary's detection are untouched.

Fold session-start's duplicate Pi marker predicate into the shared library so
the ownership contract has one owner.

* no-mistakes(review): Restrict Pi hand-off tolerance to unheld watcher locks

* no-mistakes(document): Document Pi watcher hand-off supervision
* feat(cursor): add Cursor Agent CLI primary hooks, park supervision, and session start

Register a tracked project-scope .cursor/hooks.json for Cursor's stop,
sessionStart, preCompact, and preToolUse steps.

bin/fm-turnend-guard-cursor.sh owns Cursor's turn boundary as a park: it
foregrounds the watcher arm, holds the boundary open until an actionable close,
and returns that wake as one follow-up. Exit 2 is a silent no-op on Cursor's
stop step, so the adapter never uses it. The follow-up loop is bounded twice,
by Cursor's own loop_limit and by the payload's loop_count.

bin/fm-sessionstart-cursor.sh delivers the digest as additional_context at
sessionStart, and stages it for the next turn boundary at preCompact, which
cannot inject context.

Cursor also loads the tracked Claude settings, so bin/fm-hook-host-lib.sh lets
each tracked Claude-shaped entrypoint stand down on a Cursor-delivered payload
rather than running every covered event twice.

bin/fm-tmux-lib.sh reclassifies a Cursor pane's composer cursorlessly, because
Cursor parks its terminal cursor outside the composer, which restores a genuine
composer-empty proof and unblocks away-mode escalation delivery.

* feat(cursor): make Cursor Agent CLI a verified primary harness

Resolve Cursor in the session-lock ancestry through bin/fm-cursor-lib.sh, which
a Cursor primary needs before it can hold its own home lock, and classify its
stop-hook park under the autoarm supervision model so the mid-turn pull guard
stops reporting a healthy between-turns watcher as down.

Read a Cursor pane's composer cursorlessly on tmux, gated on Cursor's own
structural process identity, which restores a genuine composer-empty proof and
lets away-mode escalations reach a Cursor primary with no daemon change.

Lift the secondmate refusals in bin/fm-spawn.sh and bin/fm-control-lib.sh now
that the supervision protocol exists and is recorded.

Cover the whole surface with a portable regression over real processes, an
opt-in live guard against the installed cursor-agent, and dated per-harness
evidence.

* docs(cursor): record Cursor as a verified primary across the owning surfaces

Update the turn-end guard, session-start, arm-seatbelt, cd-guard, watcher
continuity, architecture, configuration, README, and harness-adapters owners,
and add dated live evidence to the supervision and runtime-backend verification
records. Correct the recorded Cursor tmux composer verdict: the cursor-anchored
read is still blind, but the composite reader is no longer unknown.

Lift the remaining remote-secondmate refusal missed in the previous commit, and
add the new libs to the existing fixtures that copy a fixed dependency list.

* refactor(cursor): name the park's stand-down condition for both its causes

Also record that Cursor's preCompact firing itself is not yet live-verified,
while the static evidence that it cannot inject context, and the staging path
that follows from it, both are.

* test: give the pretool fixtures their new dependency and one lint owner

The cd-guard fixture copies a fixed dependency list and now needs the shared
hook-host predicate. Both pretool suites also asserted cleanliness with a bare
shellcheck call, a second and weaker copy of the lint definition that
bin/fm-lint.sh owns: it omits --external-sources, so it failed the moment these
checkers sourced a shared library. They now delegate to that owner.

* test: assert the cursor secondmate contract instead of its removed refusal

A cursor secondmate now launches, so the suite asserts what its park actually
needs: --trust so the home's project hooks load at all, its own home pinned as
the workspace, and the autoarm supervision model inherited across the launch.

* no-mistakes(review): Serialize Cursor wakes and bind staged context

* no-mistakes(review): Serialize Cursor context and nag state commits

* no-mistakes(review): Enforce Cursor ceiling before staged context delivery

* no-mistakes(review): Serialize Cursor claims and staged context

* no-mistakes(review): Serialize Cursor ownership and state commits

* no-mistakes(review): Protect Cursor context across session takeover

* no-mistakes(review): Preserve Cursor context across session takeover

* no-mistakes(review): Enforce owner-keyed Cursor staged context

* no-mistakes(review): Atomically claim Cursor follow-ups and staged context

* no-mistakes(review): Defer Cursor preCompact staging and simplify supersession

* no-mistakes(review): Serialize Cursor park commits and defer preCompact

* no-mistakes(review): Stop Cursor parks after session takeover

* no-mistakes(test): Route Cursor preCompact context through stop follow-up

* no-mistakes(document): Update Cursor primary documentation

* revert(cursor): cut preCompact staging from this change

Carrying a compaction digest across two concurrently running stop hooks kept
producing races that could deliver it twice or strand it indefinitely, and
closing them kept enlarging a critical section inside a hook Cursor awaits at
the turn boundary. Native preCompact firing was never observed either, so the
surface has no empirical basis yet.

Remove the adapter, its registration, its staged path in the park, and its
tests, and record the surface as deferred and uncovered alongside the Codex
interactive TUI. A regression now asserts preCompact stays unregistered so it
cannot return without its own design and evidence.

This change ships the proven core only: the turn-end follow-up park, the
run-tier session start, and away-mode delivery.

* no-mistakes(review): Correct Cursor park supersession documentation

* no-mistakes(document): Clarify Cursor run-tier verification ownership

* no-mistakes: apply CI fixes

* no-mistakes: apply CI fixes

---------

Co-authored-by: kunchenguid <kun-1@kunchenguid.com>
…id#2330)

* feat(bin): add unrouted close paths to the captain decision gate

A captain who declines a held decision leaves no follow-up work to route,
so `resolve` could not express that answer: it requires at least one
`--routed-to` task. The only way to close such a hold was a direct
`tasks-axi done`, which never writes the durable resolution record the
completion gate reads, so the originating investigation could no longer
pass `verify` and its cleanup stayed blocked.

Add two close paths that route no work:

- `decline` closes an actively held hold with a recorded captain decision
  and no routed task. It refuses while any task is still blocked by the
  hold, because releasing routed work without recording it is `resolve`'s
  job.
- `repair` records the missing resolution block on a hold that was already
  closed outside this script. It never reopens a hold and never clears a
  dependency edge, and it refuses a hold that is still actively held.

Both require a non-empty captain decision file and share `resolve`'s
digest-based retry identity, so an exact retry is idempotent while a
changed decision is rejected. The recorded body now also names which path
closed the hold, and each routed entry regains its own line.

The gate itself is unchanged: an unanswered decision still fails
completion and blocks teardown, and neither new path can close a hold
without the captain's recorded word.

* fix(bin): require captain-hold provenance before repairing a decision

`repair` checked only that the backlog item was kind captain and Done, so
an ordinary captain-kind task that was never held for the captain could be
closed, repaired, and then pass the completion gate.

tasks-axi keeps `hold_kind` through a close, so it is the surviving proof
that an identity really was a captain hold. Require it before writing the
resolution record, and cover the case in the gate regression.

* no-mistakes(document): Correct decision-hold lifecycle documentation
* fix(bin): surface buried status notes on wake drain

A note: answer immediately followed by a routine note was dropped because
annotations kept only the newest line and note: never enters OPEN DECISIONS.
Present every unread note and pending-reply resolution since the last drain
cursor, and annotate every unread line on a queued signal.

* no-mistakes(review): Fix unread status cursor races and overflow

* no-mistakes(review): Preserve cursors when status span reads fail

* no-mistakes(review): Make status presentation transactional under I/O failures

* no-mistakes(review): Simplify unread status cursor and presentation locking

* no-mistakes(review): Align cursor failure regressions with transactional presentation

* no-mistakes(review): Retire stale presentation cursors during task teardown

* no-mistakes(review): Preserve routine status until signal annotation

* no-mistakes(review): Correct unread status cap documentation

* no-mistakes(document): Document unread wake status presentation

* no-mistakes(lint): Fix wake surfacing ShellCheck warnings

* no-mistakes: apply CI fixes
* feat(calm): add a max presentation level that hides mid-turn working notes

Calm's home-local preference becomes a three-state level instead of a
boolean: "off" is stock Pi, "on" is today's Calm, and "max" is Calm plus
hiding the assistant text of messages the model did not end its response
with. `/calm max` selects it from any state, a plain `/calm` steps max
back to ordinary Calm and otherwise keeps the existing on/off cycle, and
any other argument keeps that cycle too.

`config/calm` now persists "max" as its own literal value, so a session
start, resume, fork, or reload restores the stored level rather than
treating it as unrecognized and dropping to off.

The hide rule keys on Pi's intrinsic per-message stopReason: "toolUse",
or "length" with tool calls present. Streaming ("pending") text is never
filtered, because suppressing it would also stop a genuine reply from
streaming. The existing assistant layout adapter filters the blocks out
of the same shallow presentation copy it already uses for collapsed
thinking, so the message, model context, session storage, /export, and
delivery are untouched and a hidden mid-turn row collapses to zero
height. The new "assistant-working-note" class keeps that choice in the
visibility policy owner, where ordinary Calm keeps it visible.

* no-mistakes(document): Clarify Calm max persistence and taxonomy
* feat(calm): make hiding mid-turn working notes the ordinary Calm state

Calm collapses back to the two-state on/off toggle it was before the max
presentation level, with max's hide rule promoted into ordinary Calm.
Calm on now hides mid-turn assistant working notes in addition to what it
already hid, and the /calm command parses no argument again.

The hide rule itself is unchanged: assistant text is removed from the
shallow presentation copy when the message's own stopReason is "toolUse",
or "length" with tool calls present. Streaming ("pending") text is never
filtered, so a genuine reply still streams. The message, model context,
session storage, /export, and delivery remain untouched.

config/calm persists only "on" and "off" again, but the reader still maps
a persisted "max" to on so a home upgraded from the removed level keeps
Calm on instead of dropping to off.

The mid-turn hide is now default behavior rather than an opt-in level, so
docs/calm.md documents it for users, docs/configuration.md records the
two written values plus the legacy max mapping, and the feasibility
taxonomy drops its level-scoped wording.

* no-mistakes(document): Document ordinary Calm working-note hiding
A wedged family-run step was occupying the runner until the 75-minute
job cap; bound that step so cleanup and timing artifacts still upload.
…d mate (kunchenguid#2457)

The lightweight Relay follow-up link lives in the answering home's own
state/<task-id>.meta, so it can only bind work that home owns. When a
Relay-linked request is routed to a second mate, the task record lives in the
second mate's home, fm-x-link.sh failed with a bare "no such task ...meta", and
nothing else picked the promise up: only the soft acknowledgement was ever
posted. The typed promised-final path already supports --work-home
secondmate:<id>; the playbook simply never chose it.

- fmx-respond now states the routing rule crisply: a task in this home takes the
  lightweight link, and second-mate-routed work takes a promised-final
  commitment bound to that home, registered up front with the brief command
  carried into the routed worker's instructions.
- fm-x-link.sh refuses a task with no local record by naming the registered
  second mate whose home actually holds it and printing the promised-final
  registration command, with the exact --work-home when the match is
  unambiguous. A home with no registered second mates keeps the plain error.
- fm-backlog-handoff.sh reports, after a successful move, any moved key that
  still owes a public reply bound to main/<key>, since that binding no longer
  names the home owning the work. The move itself is never blocked.

Docs and the secondmate handoff prose follow the same rule. Tests cover the
refusal, its scoping, the unchanged local-link path, and both handoff outcomes
at the script boundary.
…verdicts (kunchenguid#2456)

* fix(skills): hint that remote secondmate liveness verdicts false-negative

fm-crew-state and fm-send routinely misreport a live remote secondmate
as dead; confirm against the pane before relaunching, and relaunch only
through fm-spawn.sh, never raw herdr pane surgery.

* no-mistakes: apply CI fixes
Pi 0.83.0 added a status line to every tool-expansion change, and Pi
updates the previous status line in place when two status messages
arrive back to back. Calm's post-export redraw cycled tool expansion on
the macrotask right after Pi printed "Session exported to: <path>", so
both expansion status lines coalesced over that confirmation and the
captain was left with no record of where their export landed.

Calm now repaints only the tool rows it presents, by invalidating each
row through the render context Pi hands its render slots, and requests
the surrounding redraw through setStatus. Neither appends to the
transcript. The repaint is still needed because Pi can re-render a row
asynchronously - the built-in edit row invalidates itself once its diff
is ready - and that re-render can land inside the window where /export
forces stock rendering.

The real-terminal /export case now asserts the confirmation is still on
screen after the redraw has settled, and that the redraw restored every
Calm-hidden row, instead of only racing the moment the confirmation
first appeared.
…nguid#2488)

* feat(stow): persist the open records a session is holding

/stow curated memory and captured session knowledge, but never touched
record state, while AGENTS.md called it an "unfinished-work sweep" and the
receipt declared the session "safe to reset" - wording that implied a
record-correctness guarantee stow does not make. A shipped PR with no
backlog item, a queued umbrella whose phases had merged, and four decision
holds left open after their answers shipped all survived repeated stows.

Add a bounded pass that files record state from the same volatile input the
rest of stow already uses: the open threads in context, minutes before the
reset destroys them. It creates a record for an unfiled thread and corrects
one the session knows is wrong, through the owning path, and states its
boundary as part of the contract - it never enumerates the backlog, lists
holds, or queries a forge, because it cannot be a reconciliation and must
not be read as one.

Correct the wording in AGENTS.md and the completion receipt so reset-safe
means what it actually guarantees: nothing this session knew was lost.

* no-mistakes(review): correct stow decision-hold inspection to read hold via tasks-axi

* no-mistakes(document): note /stow open-record persistence in README command catalog

* refactor(stow): state open-record persistence as principle, not procedure

The first version enumerated triggers, named commands, and prescribed an
ordered procedure. That is too rigid for an agent skill: it invites literal
execution of a checklist instead of judgment, and every enumerated example
is a way for the guidance to go stale.

Reduce it to the intent - before a reset, the important open work you are
holding in context must end up durably recorded rather than dying with the
session, filing what is unfiled and correcting what is stale - and let the
agent judge importance, the record, and the owning write path.

Keep the scope bound, since it is a decided contract and not a mechanic:
this covers the open work the session is holding, never a reconciliation of
durable records against repository or forge reality. The wording
corrections in AGENTS.md and the completion receipt are unchanged.
…eyed-answer path (kunchenguid#2490)

* fix(decisions): close captain holds at answer time

Firstmate had two "a decision is open" ledgers with asymmetric closing
mechanics. The live status-log ledger closes atomically at answer time,
because bin/fm-send.sh --resolve-key makes answering a decision be the
act that closes it. The durable backlog hold ledger had no such coupling:
answering and recording were two separate acts, and only the first was
forced by the workflow.

That asymmetry lost four real captain decisions. Their answers were
captured durably to disk, keyed character for character by the hold
decision keys, acknowledged, and even implemented and shipped, yet the
holds stayed open for two days and the captain was asked to re-answer
decisions already on his own disk.

Give the hold ledger the same answer-time-closure property:

- bin/fm-decision-hold.sh gains an `answer` subcommand, the hold ledger's
  counterpart to --resolve-key. It shares one unrouted close
  implementation with `decline`, so it carries every existing guard - the
  captain decision file, the active-hold requirement, retry identity, and
  the refusal to release still-routed work - and differs only in the
  resolution mode it records. `decline` keeps its stronger meaning that
  the answer routes no follow-up work at all.
- bin/fm-procevent-lavish.sh wires the channel that actually carried the
  lost answers. `arm --decisions-origin` binds a deck to the origin whose
  holds it carries, `answers` reads the structured choices out of a
  captured poll result, `close-decisions` maps each key to its hold and
  closes it through the command above, and `autohandle` lets the runner
  apply that at capture time.

Safety is preserved rather than traded away. Only rows tagged `choice`
are read, so freeform captain prose cannot forge a decision key. Closure
is confined to the one bound origin. The decision text is a pure function
of the captured result, so a replayed capture is idempotent. A hold that
is absent, already closed, or still blocking routed work is skipped and
left for `resolve`, never forced. A deck armed without the binding
touches no hold at all. And autohandle deliberately never reports full
handling, because recording an answer is transcription while acting on it
is firstmate's judgement - so the check wake still reaches the handler.

fm-send --resolve-key is untouched.

* no-mistakes(document): document state/lavish-decisions binding dir in AGENTS.md state inventory

* refactor(decisions): make keyed-answer closure one general capability

The previous pass gave holds answer-time closure but built it as bespoke
Lavish wiring: the review adapter carried the source-to-origin binding,
mapped keys to hold identities, wrote decision records, decided what to
skip, and closed holds itself. That treated a review deck as a special
decision source. It is not - it is an ephemeral discussion format that
happens to carry answers.

Collapse it into ONE general capability with one owner.

bin/fm-decision-hold.sh now owns the whole of "a keyed answer closes its
matching hold":
- `answers <origin> --source <provenance>` is the channel-agnostic
  intake. It reads key/answer/label lines on stdin, maps each key to its
  hold, and closes it through the same `answer` path, so every guard
  applies identically whatever channel the answer came from. --source is
  provenance recorded in the decision, never a behavior switch; there is
  no per-channel branch and no knowledge of chat, decks, or transports.
- `bind`/`unbind`/`binding` own the source-to-origin binding for any
  channel whose answers arrive detached from their origin.

Every channel is now an ordinary caller that only turns what it received
into keyed lines:
- bin/fm-send.sh (chat) feeds the intake for a key that names an active
  hold. This also fixes a real gap: once `complete` transfers a decision
  to its hold it closes the live status copy, so --resolve-key alone
  could never answer a transferred decision.
- bin/fm-procevent.sh feeds it generically. A bound source's captured
  result goes to `<adapter> answers <result-file>` and whatever that
  prints is piped into the intake. The runner names no adapter, parses
  no result, and carries no decision rule, so any future adapter with an
  `answers` command works with no change here.
- bin/fm-procevent-lavish.sh keeps only `answers`, which reports the
  structured choices a review captured and stops. It maps nothing to a
  hold and closes nothing; it lost ~160 lines of decision logic.

Feeding is independent of handling, so it never acknowledges a result
and never suppresses a wake - recording an answer is transcription,
acting on it stays firstmate's judgement.

The regression that proves closure now drives a FIXTURE adapter that is
not the review adapter, so what is proven is that any bound channel
reaches the intake rather than that one channel is wired specially. A
new regression drives the real fm-send over a stubbed transport for the
chat side. Every prior guarantee still holds, and fm-send's status-log
behavior is unchanged.

* no-mistakes(review): test(decisions): drop source-content grep from hold-closure regression
…mlink (kunchenguid#2512)

A Write aimed at CLAUDE.md followed the symlink and destroyed AGENTS.md.
The installer now creates and migrates to a recoverable two-line pointer file.
* fix(lint): catch malformed GitHub workflows before merge

A self-broken ci.yml cannot report its own breakage, so parse every
workflow in the local lint path that no-mistakes already runs.

* fix(lint): pin actionlint instead of Ruby for workflow lint

A self-broken ci.yml still has to fail in the local lint path, and the
named tool for that gate is actionlint, not a new Ruby runtime.

* no-mistakes(document): Clarify pinned workflow lint documentation
…d#2546)

* fix: install pinned shellcheck and actionlint on macOS and linux arm64

The installers were hardcoded to linux amd64 and sha256sum, so a Mac
dev could not satisfy the refuse-on-mismatch lint gate. Select the
official per-platform archive and checksum, and fall back to shasum -a 256.

* no-mistakes(document): Document cross-platform pinned lint installers
…uid#2548)

.no-mistakes.yaml has set test.evidence.store_in_repo: true since kunchenguid#2355, but
CONTRIBUTING.md, docs/configuration.md, and docs/architecture.md still described
the old policy of keeping evidence out of the repo in a temp directory.

The current no-mistakes behavior for store_in_repo: true is to publish each run's
test evidence to the orphan no-mistakes/evidence branch and link it from the PR
body. That branch shares no history with code branches, so evidence never enters
a pushed feature branch or the default branch, and CI's tracked personal fleet
paths rule stays accurate.

Docs only. No change to .no-mistakes.yaml or any workflow.
* docs: correct test evidence storage comment in .no-mistakes.yaml

* no-mistakes: apply CI fixes
…nchenguid#2563)

Make that a first-class option in always-loaded instructions so firstmate does not default to mediating and tearing the scout down between iteration rounds.
…chenguid#2570)

* fix(bin): report remote secondmate delivery and state truthfully

A steer to a remote secondmate crosses fm-on.sh to a host-local fm-send
leg whose unconfirmed submit read-back (verdict=pending, typically a busy
mate whose harness queues the steer) was flattened into exit 1, so the
parent printed "error: text not submitted" / "error: text not sent" and
discarded the pending-reply expectation for a steer that had actually
landed. fm-send now carries the verdict across the ssh boundary as a
documented delivered-unconfirmed exit 3: the parent reports the steer as
delivered with confirmation pending, exits 0, keeps the expectation armed
(awaiting_report), and closes --resolve-key decisions, while transport
loss (ssh 255) and real remote failures keep failing loudly with the
remote leg's stderr attached. A local unconfirmed submit now also exits 3
with an honest non-error message and still never closes a decision key.

fm-crew-state.sh and fm-peek.sh no longer read a remote mate's endpoint
through local probes (which misreported a healthy mate as "worktree gone"
/ "can't find session: remote"): both now use the true remote source over
fm-on.sh, and an unreachable or unreadable remote reads as unknown-remote,
never as gone or dead.

* no-mistakes(document): Document remote delivery and state truth

* no-mistakes: apply CI fixes
Away-mode housekeeping treated every failed capture as a gone pane and
dropped the marker with no escalation. A redraw, timeout, or backend
hiccup then silently stopped watching a worker that was still there,
which is the failure this path exists to prevent.

Both the stale-wedge and pause-resurface sites now share
stale_window_recheck: retry the capture twice (0.4s apart) before
verdict, then ask fm_backend_agent_state. Only an authoritatively
missing endpoint is gone. A present dead shell is ordinary idle. Every
other state, including an unreadable or unverified probe, escalates and
keeps the marker on the same cadence because the watcher cannot
recapture an unreadable pane. target_exists is not used as a gone proof:
tmux can fall back to the active window, and Orca's check is itself a
capture.

Tests cover gone, unreadable-present (alive/unreadable/unverified),
retry-then-ordinary, and dead-is-not-gone at both call sites.
@BohnBawerick
BohnBawerick merged commit 2114a72 into main Aug 18, 2026
13 of 14 checks passed
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