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fix: reject stale Herdr endpoints after session resets - #41

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cloud-practitioner merged 11 commits into
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fm/fm-herdr-stale-session-endpoint
Oct 7, 2026
Merged

cloud-practitioner merged 11 commits into
mainfrom
fm/fm-herdr-stale-session-endpoint

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@cloud-practitioner cloud-practitioner commented Oct 6, 2026 •

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Intent

The devcontainer does not persist herdr's session state across rebuilds ("drop it, I only need firstmate and 2ndmates"). So after every devcontainer rebuild herdr starts a fresh session whose workspace and pane ids restart from w1 (they are counters: w1, w2, ... wB, ... w1B), while surviving firstmate records - in the main home and in second-mate homes, the window= and herdr_pane_id= / herdr_workspace_id= / herdr_tab_id= fields of state/*.meta - still name the old ids. A recorded id could then match an unrelated new pane in the new herdr session.

Task: first establish whether firstmate's herdr liveness and recovery already detect that a recorded endpoint belongs to a previous herdr session, so that it is reported dead and relaunched rather than treated as alive or steered. If it already does, report that with evidence and stop. If not, ship the narrow fix so such records are treated as stale after a fresh herdr session.

Out of scope: persisting herdr state, other backends (tmux, zellij, cmux, Orca), and crewmate slot leases.

What Changed

  • Record Herdr pane shell PID and start time during spawn and relaunch; treat mismatched process bindings as missing endpoints rather than adopting recycled pane IDs, with a best-effort label/cwd fallback for records without a binding.
  • Apply task-specific ownership checks to liveness, recovery, capture, input, and cleanup, using the owning secondmate or remote parent-route state directory and leaving proven foreign panes untouched.
  • Add regression coverage and update recovery documentation for process identity changes, restored servers, cross-home ownership, teardown, and legacy-record compatibility.

Risk Assessment

✅ Low: The Herdr-only change implements the amended ownership design, including portable optional identities, task-selected guards, and response-owned cleanup, with no additional material defects substantiated.

Testing

Three targeted suites passed, and real-product checks passed for reused endpoint IDs, ownership guards, preserved-data relaunch, cleanup and the edited recovery paths after correcting fixture setup. The bounded presentation run passed its metadata comparison but did not finish; focused recovery validation subsequently passed. Remote public-command integration remains deterministic-only because its fixed session violates the lab boundary. Evidence is CLI output and persisted metadata; no UI layout changed.

  • Live validation: ✅ go - 6 of 7 scenarios driven live against the product
Scenario Result Live Evidence
Rebuild Herdr and reuse a recorded pane ID: surviving main and secondmate records report missing ✅ pass live live-reused-endpoint.log: recreated w1:p2 with a different process identity; both home contexts returned missing despite matching label and cwd.
Try to capture, steer or close an unrelated pane through a stale record: access is refused ✅ pass live live-reused-endpoint.log: capture, key and text refused in both homes; guarded close retained the unrelated pane and no injected command executed.
Keep the same root process, then probe a real running CLI: current ownership stays valid and stale ownership does not ✅ pass live live-reused-endpoint.log: exec preserved the identity; the process-backed Claude registration read alive with the current binding and missing with the stale binding.
Relaunch a stale task: bind a fresh endpoint without losing its worktree or unlanded data ✅ pass live live-reused-endpoint.log and live-original.meta/live-rebound.meta: recovery changed w1:p2 to w1:p3, published its new identity and preserved the worktree and sentinel file.
Clean up an aborted projected spawn and retire recorded endpoints without closing an unrelated pane ✅ pass live live-reused-endpoint.log: failed acquisition left no B record, pane or workspace despite stale A claiming its address; stale-child and owned-endpoint teardown completed while retaining the unrelated p…
Spawn flat and projected workers, then recover legacy restart records across homes: metadata and exact recovery contracts remain intact ✅ pass live herdr-presentation-live.log passed the metadata comparison; focused-herdr-recovery-result.log passed primary, repeated, secondmate-child and concurrent recovery cases.
Use host-local remote control after endpoint reuse: parent-route ownership governs access ⏸️ untested no Disposable XDG/socket isolation worked for named labs, but the remote public command hardcodes fm-remote, which the mandatory lab helper refuses. No call was made against that shared session. Live int…
Evidence: Live reused-endpoint, liveness, relaunch and cleanup transcript

Source: Live reused-endpoint, liveness, relaunch and cleanup transcript

/tmp/fm-task.7sb9rql8/main
/tmp/fm-task.7sb9rql8/child
scaffolded: /tmp/fm-task.7sb9rql8/main/data/mine/brief.md (scout; replace {TASK} and {FIRSTMATE_SPEC})

$ fm-spawn mine --scout --backend herdr (raw shell workload)
fm-gate-refuse: gate agent lifecycle permitted only against lab home /tmp/fm-task.7sb9rql8/main
spawned mine harness=sh kind=scout window=fm-lab-stale-1977627:w1:p2 worktree=/tmp/fm-task.7sb9rql8/pools/.treehouse/project-b94f27/1/project
PUBLISHED target=fm-lab-stale-1977627:w1:p2 identity=ps:1978266:Tue Oct  6 23:42:18 2026 worktree=/tmp/fm-task.7sb9rql8/pools/.treehouse/project-b94f27/1/project

$ lab run pane send-keys w1:p2 C-c

$ lab run pane run w1:p2 exec bash --noprofile --norc
VERIFIED exec preserves the root process binding: ps:1978266:Tue Oct  6 23:42:18 2026
VERIFIED fresh session actually reuses the recorded pane address: w1:p2
RECREATED same-label/same-cwd target=fm-lab-stale-1977627:w1:p2 old=ps:1978266:Tue Oct  6 23:42:18 2026 new=ps:1987321:Tue Oct  6 23:42:28 2026

$ lab run pane run w1:p2 printf 'UNRELATED-PANE-DO-NOT-STEER\n'
VERIFIED main-home stale liveness: missing
🌳 Setting up worktree...
🌳 Leased worktree at /tmp/fm-task.7sb9rql8/child-pools/.treehouse/project-b94f27/1/project. Run 'treehouse return /tmp/fm-task.7sb9rql8/child-pools/.treehouse/project-b94f27/1/project' to release it.
VERIFIED secondmate-home stale liveness: missing
REFUSED stale capture
fm-gate-refuse: gate agent lifecycle permitted only against lab home /tmp/fm-task.7sb9rql8/main
●━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
●  WATCHER DOWN - SUPERVISION IS OFF
●  1 task(s) in flight, but no live watcher process holds this home lock (last beat: 13s ago).
●  Trust the emitted supervision protocol for this harness; do not use shell & for watcher repair.
●  This is a supervision warning only; the requested message WILL still be sent.
●  repair a missing or failed watcher cycle with the Pi tool fm_watch_arm_pi, or restart Pi with -e ~/.no-mistakes/worktrees/450411b3e67c/01M47HX8Y8BQRSDDHWXNW190JH/.pi/extensions/fm-primary-turnend-guard.ts -e ~/.no-mistakes/worktrees/450411b3e67c/01M47HX8Y8BQRSDDHWXNW190JH/.pi/extensions/fm-primary-pi-watch.ts if the extensions are not loaded.
●━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
error: key 'C-c' not sent to fm-lab-stale-1977627:w1:p2 (herdr send failed; tried meta=/tmp/fm-task.7sb9rql8/main/state/mine.meta; backend=from-meta)
REFUSED stale key
REFUSED stale text
VERIFIED stale close left the unrelated pane present (/tmp/fm-task.7sb9rql8/main)
REFUSED stale capture
fm-gate-refuse: gate agent lifecycle permitted only against lab home /tmp/fm-task.7sb9rql8/child
●━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
●  WATCHER DOWN - SUPERVISION IS OFF
●  1 task(s) in flight, but no live watcher process holds this home lock (last beat: 15s ago).
●  Trust the emitted supervision protocol for this harness; do not use shell & for watcher repair.
●  This is a supervision warning only; the requested message WILL still be sent.
●  repair a missing or failed watcher cycle with the Pi tool fm_watch_arm_pi, or restart Pi with -e ~/.no-mistakes/worktrees/450411b3e67c/01M47HX8Y8BQRSDDHWXNW190JH/.pi/extensions/fm-primary-turnend-guard.ts -e ~/.no-mistakes/worktrees/450411b3e67c/01M47HX8Y8BQRSDDHWXNW190JH/.pi/extensions/fm-primary-pi-watch.ts if the extensions are not loaded.
●━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
error: key 'C-c' not sent to fm-lab-stale-1977627:w1:p2 (herdr send failed; tried meta=/tmp/fm-task.7sb9rql8/child/state/mine.meta; backend=from-meta)
REFUSED stale key
REFUSED stale text
VERIFIED stale close left the unrelated pane present (/tmp/fm-task.7sb9rql8/child)

$ lab run pane read w1:p2 --source recent --lines 12 --format text
printf 'UNRELATED-PANE-DO-NOT-STEER\n'
project on  HEAD [?]
❯ printf 'UNRELATED-PANE-DO-NOT-STEER\n'
UNRELATED-PANE-DO-NOT-STEER
project on  HEAD [?]
❯

$ fm-spawn mine --relaunch --harness claude
fm-gate-refuse: gate agent lifecycle permitted only against lab home /tmp/fm-task.7sb9rql8/main
spawned mine harness=claude kind=scout window=fm-lab-stale-1977627:w1:p3 worktree=/tmp/fm-task.7sb9rql8/pools/.treehouse/project-b94f27/1/project
VERIFIED relaunch preserves the recorded worktree: /tmp/fm-task.7sb9rql8/pools/.treehouse/project-b94f27/1/project
VERIFIED relaunch preserves unlanded user data: unlanded sentinel
VERIFIED relaunch publishes the new process binding: ps:1996096:Tue Oct  6 23:42:36 2026
VERIFIED rebind selected fm-lab-stale-1977627:w1:p3 and retained unrelated fm-lab-stale-1977627:w1:p2

$ lab run pane read w1:p3 --source recent --lines 30 --format text
   ░░░░░░░░░░░░░░░░░░░    *                ██▓░░      ▓
                                             ░▓▓███▓▓░
 *                                 ░░░░
                                 ░░░░░░░░
                               ░░░░░░░░░░░░░░░░
       █████████                                        *
      ██▄█████▄██                        *
       █████████      *
.......█ █   █ █..........................................

 Let's get started.

 Choose the text style that looks best with your terminal
 To change this later, run /theme

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 ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌
  1  function greet() {
  2 -  console.log("Hello, World!");
  2 +  console.log("Hello, Claude!");
  3  }
 ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌
  Syntax theme: Monokai Extended (ctrl+t to disable)

$ lab run pane process-info --pane w1:p3
{"id":"cli:pane:process_info","result":{"process_info":{"foreground_process_group_id":1998765,"foreground_processes":[{"cwd":"/tmp/fm-task.7sb9rql8/pools/.treehouse/project-b94f27/1/project","name":"claude","pid":1998765}],"pane_id":"w1:p3","shell_pid":1996096},"type":"pane_process_info"}}

$ lab run pane report-agent w1:p3 --source live-validation --agent claude --state idle
VERIFIED the new owned record recognizes the real running CLI: alive
VERIFIED stale identity rejects a real live CLI despite matching label and cwd: missing
fm-gate-refuse: gate agent lifecycle permitted only against lab home /tmp/fm-task.7sb9rql8/child
WARNING: watcher still down (same stale episode; last beat: 27s ago, grace 300s) - full banner already printed this episode.
🌳 Worktree returned to pool.
teardown mine complete (window fm-lab-stale-1977627:w1:p2, worktree /tmp/fm-task.7sb9rql8/child-pools/.treehouse/project-b94f27/1/project)
Backlog: mine just finished (this home keeps no markdown backlog at /tmp/fm-task.7sb9rql8/child/data/backlog.md). Update /tmp/fm-task.7sb9rql8/child/data/backlog.md - move mine to Done, keep Done to the 10 most recent, then re-scan Queued and dispatch only work whose blockers are gone and date is due.
VERIFIED stale child teardown removed its record, not the unrelated pane
scaffolded: /tmp/fm-task.7sb9rql8/main/data/b/brief.md (scout; replace {TASK} and {FIRSTMATE_SPEC})
fm-gate-refuse: gate agent lifecycle permitted only against lab home /tmp/fm-task.7sb9rql8/main
error: treehouse get did not enter an isolated worktree within 60s (last seen '/tmp/fm-task.7sb9rql8/project': it is the spawning project itself; spawning project '/tmp/fm-task.7sb9rql8/project'); inspect window fm-lab-stale-1977627:w2:p2
warning: herdr presentation cleanup could not verify the exact pane; refusing focus-unsafe pane close
VERIFIED response-owned abort removes the disposable workspace: ["w1"]
{"error":{"code":"pane_not_found","message":"pane w2:p2 not found"},"id":"cli:pane:get"}
VERIFIED stale ambient A did not prevent cleanup of newly created B at w2:p2

$ lab run pane run w1:p2 cd '/tmp/fm-task.7sb9rql8/unrelated'
fm-gate-refuse: gate agent lifecycle permitted only against lab home /tmp/fm-task.7sb9rql8/main
WARNING: watcher still down (same stale episode; last beat: 101s ago, grace 300s) - full banner already printed this episode.
teardown: reaping leaked worktree process(es) for mine: 1987278 1996096 1998765
teardown: force-killing leaked worktree process(es) for mine: 1987278 1996096
🌳 Worktree returned to pool.
teardown mine complete (window fm-lab-stale-1977627:w1:p3, worktree /tmp/fm-task.7sb9rql8/pools/.treehouse/project-b94f27/1/project)
Backlog: mine just finished (this home keeps no markdown backlog at /tmp/fm-task.7sb9rql8/main/data/backlog.md). Update /tmp/fm-task.7sb9rql8/main/data/backlog.md - move mine to Done, keep Done to the 10 most recent, then re-scan Queued and dispatch only work whose blockers are gone and date is due.
{"error":{"code":"pane_not_found","message":"pane w1:p3 not found"},"id":"cli:pane:get"}
VERIFIED owned teardown removed endpoint and record, retained unrelated pane
Evidence: Original persisted endpoint record

Source: Original persisted endpoint record

window=fm-lab-stale-1977627:w1:p2
endpoint_task_id=mine
worktree=/tmp/fm-task.7sb9rql8/pools/.treehouse/project-b94f27/1/project
project=/tmp/fm-task.7sb9rql8/project
harness=sh
kind=scout
tasktmp=/tmp/fm-task.7sb9rql8/main/state/mine.tasktmp
model=default
effort=default
spawn_gen=s1791330144.1977948.30339
backend=herdr
herdr_session=fm-lab-stale-1977627
herdr_workspace_id=w1
herdr_tab_id=w1:t2
herdr_pane_id=w1:p2
herdr_process_identity=ps:1978266:Tue Oct  6 23:42:18 2026
Evidence: Rebound persisted endpoint record

Source: Rebound persisted endpoint record

window=fm-lab-stale-1977627:w1:p3
endpoint_task_id=mine
worktree=/tmp/fm-task.7sb9rql8/pools/.treehouse/project-b94f27/1/project
project=/tmp/fm-task.7sb9rql8/project
harness=claude
kind=scout
tasktmp=/tmp/fm-task.7sb9rql8/main/state/mine.tasktmp
model=default
effort=default
busy_gen=g1791330157.1996823.30874
spawn_gen=s1791330158.1994217.22073
backend=herdr
herdr_session=fm-lab-stale-1977627
herdr_workspace_id=w1
herdr_tab_id=w1:t3
herdr_pane_id=w1:p3
herdr_process_identity=ps:1996096:Tue Oct  6 23:42:36 2026
Evidence: Focused real-Herdr recovery results

Source: Focused real-Herdr recovery results

{"command": "bash ~/.no-mistakes/evidence/01M47HX8Y8BQRSDDHWXNW190JH/focused-herdr-recovery.sh", "exit": 0, "elapsed_seconds": 201.7, "artifact": "~/.no-mistakes/evidence/01M47HX8Y8BQRSDDHWXNW190JH/focused-herdr-recovery.log"}
ok - real Herdr lab: process-bound restarts reject replacement shells; legacy Hi Bit and Wheelhouse records reclaim one nested space with exact focus and idempotence
ok - real Herdr lab: secondmate restart binding and reclaim stay isolated to the exact child home and parent
ok - real Herdr lab: concurrent cross-home recoveries replace exact husks under one session lock with no focus drift
Disposable task scratch removed; default-session tripwire unchanged.
Evidence: Bounded presentation run, including metadata comparison

Source: Bounded presentation run, including metadata comparison

ok - real Herdr lab: an opted-out spawn retains the Stage 1 Herdr command sequence with zero ordering calls
ok - real Herdr lab: a home that configured nothing is projected by default on herdr 0.9.3
ok - real Herdr lab: every projected create, task-tab create, seeded prune, and move preserves active workspace and tab
ok - real Herdr lab: persisted-focused seeded prune proceeds when no live client is attached
ok - real Herdr lab: bounded lock contention warns and falls back flat without projection or focus drift
ok - real Herdr lab: concurrent primary workers form one stable contiguous block without active workspace/tab drift
ok - real Herdr lab: forced workspace.move failure leaves a successful worker in default order with a warning and no cleanup
ok - real Herdr lab: concurrent post-create abort cleanup stays serialized with exact focus restoration
ok - real Herdr lab: Treehouse commands and metadata shape are byte-identical except for endpoint IDs and process/spawn incarnations
ok - real Herdr lab: exact task-pane close removes the projected workspace with no unrestored wrong-focus interval
ok - real Herdr lab: concurrent projected cleanup is serialized and leaves active workspace/tab unchanged
Evidence: Validation report, commands, setup corrections and limits

Source: Validation report, commands, setup corrections and limits

# Targeted stale-Herdr-endpoint validation

Target: `3f8ce587ad1fb7754fea76d56a0bbd4cd4b9f1f2` relative to `17a7b57015e3b3c8575d7e8775782e4b08b44869`.

## Real product evidence from this turn

- `live-reused-endpoint.log`: real Herdr 0.9.3, real Treehouse, unmodified Firstmate entrypoints. The original spawn published `ps:<pid>:<UTC-start-time>`. An `exec` preserved that binding. Deleting and recreating the same named lab reused `w1:p2` with a different process identity despite matching label and cwd. Main and secondmate-home records read `missing`; capture, key and text refused, and guarded close retained the unrelated pane. Relaunch selected `w1:p3`, preserved the worktree and unlanded sentinel, and published the new identity. A real running Claude executable was registered through Herdr's public registry: its current record read `alive`, and the stale binding read `missing`. This proves process-backed liveness, not Claude authentication or model completion; its config was isolated for the final run. Stale-child and owned-endpoint teardown completed. A real failed Treehouse acquisition left no B metadata, pane, or workspace despite stale A claiming the response-derived address.
- `live-original.meta` and `live-rebound.meta`: persisted public endpoint contracts before and after recovery.
- `focused-herdr-recovery.log` and `focused-recovery-details/`: the edited recovery sections of `tests/fm-backend-herdr-presentation-e2e.test.sh`, replayed with real binaries. Process-bound records reject replacement shells. Legacy primary, repeated primary, secondmate-child, and concurrent cross-home recovery preserve their exact projected workspace and replace only the exact husk. Final run exited 0 in 201.7 seconds.
- `herdr-presentation-live.log`: the bounded presentation suite reached and passed the real flat/projected metadata comparison and create/abort/teardown checks. It was stopped at 360 seconds during the later, unchanged focus-wave section. It is not reported as a complete-suite pass. The edited recovery sections were then driven separately to completion.

Every live server call used `bin/fm-herdr-lab.sh` with a non-default `fm-lab-*` name. The final drivers put session state, sockets, homes and Treehouse pools under disposable `FM_TASK_TMP`; the default-session tripwire stayed unchanged. Lab teardown completed and owned test processes/scratch were removed. The abandoned worktree scratch was removed and `git status --porcelain` is empty. No runtime source or test files were changed.

## Targeted deterministic checks

All exited 0:

- `bash tests/fm-backend-herdr.test.sh`
- `bash tests/fm-remote-secondmate-control.test.sh`
- `bash tests/fm-teardown-endpoint-safety.test.sh`

These are explicitly not claimed as live evidence. They also cover portable identity failure/fallback, unreadable ownership refusal, task-selected claimant context, response-owned cleanup and parent-route ownership.

## Limit

The host-local remote-control command hardcodes session `fm-remote`; the mandatory lab helper refuses that name (`remote-lab-boundary.log`). No live call was made against that session or any remote/shared host. The remote public-command integration therefore remains deterministic-only. To exercise it live under this runbook, provide an approved remote-control lab mode that selects a named `fm-lab-*` session without a gate bypass. This does not block the rebuild/reused-address intent demonstrated live in both home contexts.

## Setup corrections and bounds

Initial manual fixtures incorrectly shared the parent's worktree with a child's record, then used a non-Treehouse-managed child worktree. They were corrected to an independently managed child fixture. The abort fixture's stale A record was retired after its assertions before owned teardown, which correctly refuses conflicting worktree claims. The focused recovery fixture initially omitted secondmate parent workspaces; creating the actual labeled parents corrected flat fallback. Final runs passed. None of these setup mistakes is reported as a product failure.

This is CLI/backend behavior, not a UI-layout or copy change. Evidence is product CLI output and persisted metadata, not screenshots. No full repository suite, lint, formatting, static analysis, pipeline control, push, PR or CI phase was run.
- Outcome: ⚠️ 0 issues across 3 runs (1h16m25s)

Pipeline

Updates from git push no-mistakes

✅ **intent** - passed

✅ No issues found.

✅ **Rebase** - passed

✅ No issues found.

🔧 **Review** - 4 issues found → auto-fixed (5) ✅
  • 🚨 bin/backends/herdr.sh:2446 - The ownership heuristic does not establish session identity. Equal task ids are supported across Firstmate homes (bin/fm-spawn.sh:284), so after a rebuild an old main-home task mine can resolve to a secondmate's unrelated mine pane at the recycled address. Its cwd differs, but the new hunk [ &#34;$label&#34; != &#34;fm-$id&#34; ] || return 1 accepts its matching fm-mine label; liveness returns alive and steering reaches that other task. Likewise, line 2443 accepts a newly opened unrelated shell in the surviving worktree. This leaves the failure covered by the required criterion "such records are treated as stale after a fresh herdr session" reachable; no short-term containment was authorized. Establish an incarnation binding at the shared endpoint guard rather than treating mutable labels or cwd as identity. A remedy requiring new durable metadata needs authorization, which is why this is ask-user. Shared affected sites: bin/backends/herdr.sh:2478 (liveness), :2520 (absence recheck), :3617 (close), :3705 (record removal); bin/fm-backend.sh:773/:811 (captures), :820/:838 (input), :907/:930 (classifiers), :964 (existence), :1018/:1027 (liveness forwarding). Task consumers: bin/fm-control-lib.sh:355; bin/fm-control.sh:360/:574; bin/fm-crew-state.sh:1301; bin/fm-spawn.sh:1769/:1771; bin/fm-task-inbox-lib.sh:358; bin/fm-teardown.sh:1180/:3292/:3293/:3739/:3769. The ownership guarantee in docs/herdr-backend.md:735 also needs correction.
  • 🚨 bin/fm-teardown.sh:3292 - Forced secondmate cleanup checks child endpoints using the parent's state directory. child_meta comes from $home/state, but the new guard selects ${FM_STATE_OVERRIDE:-$FM_HOME/state} (bin/backends/herdr.sh:2418), and neither changed call switches that context. With no parent record named for the child, the guard returns not-foreign and closes the recycled address even when its cwd and label both belong to an unrelated new pane. Bind both this close and the confirmation at bin/fm-teardown.sh:3293 to FM_STATE_OVERRIDE=$sub_state; preserve that context at every recursive descendant level. This needs only propagation of the already-known owning state directory.
  • 🚨 bin/fm-backend.sh:820 - Active operations check ownership before starting the server, but do not check again afterward. Concrete sequence: the fresh post-rebuild session has reused the old task address for an unrelated pane, then that session is stopped with its new layout saved. fm-send &lt;task&gt; --key C-c reaches this guard; pane get cannot run against the stopped server, so the guard permits continuation. fm_backend_herdr_send_key then calls target_ready, which starts and restores the server, and sends C-c to the unrelated pane. The source explicitly establishes that socket commands do not auto-start the server and that ensure restores layouts. Move or repeat the ownership decision after server readiness at the shared active-operation boundary, preserving task context. Sibling changed pre-read guards: bin/fm-backend.sh:773 (capture), :811 (visible capture), :838 (text submit), :907 (busy state), :930 (composer state); their adapter paths also ensure the server after this check.
  • 🚨 bin/backends/herdr.sh:2430 - Task-specific liveness callers still omit the new expected-label argument, allowing another record to legitimize a stale task. For example, the previous session spawned secondmate B before A; after rebuilding, A is recovered first and its updated record claims B's old address. When B is probed, bin/fm-secondmate-liveness-lib.sh:217 supplies only backend and target. This loop examines both records, accepts A's matching cwd or label, and reports B alive, so bootstrap and watcher recovery leave B dead. Propagate fm-$id from each task-specific liveness caller instead of letting its verdict borrow another claimant's ownership. Shared changed sites where that identity must survive: bin/fm-backend.sh:1018/:1027 (state/alive forwarding), bin/backends/herdr.sh:2478/:2525 (state/alive classification). The automatic session-start path is bin/fm-bootstrap.sh:766, and the watcher uses the same secondmate probe.

🔧 Fix applied.
7 errors still open:

  • 🚨 bin/backends/herdr.sh:2446 - The ownership heuristic does not establish session identity. Equal task ids are supported across Firstmate homes (bin/fm-spawn.sh:284), so after a rebuild an old main-home task mine can resolve to a secondmate's unrelated mine pane at the recycled address. Its cwd differs, but the new hunk [ &#34;$label&#34; != &#34;fm-$id&#34; ] || return 1 accepts its matching fm-mine label; liveness returns alive and steering reaches that other task. Likewise, line 2443 accepts a newly opened unrelated shell in the surviving worktree. This leaves the failure covered by the required criterion "such records are treated as stale after a fresh herdr session" reachable; no short-term containment was authorized. Establish an incarnation binding at the shared endpoint guard rather than treating mutable labels or cwd as identity. A remedy requiring new durable metadata needs authorization, which is why this is ask-user. Shared affected sites: bin/backends/herdr.sh:2478 (liveness), :2520 (absence recheck), :3617 (close), :3705 (record removal); bin/fm-backend.sh:773/:811 (captures), :820/:838 (input), :907/:930 (classifiers), :964 (existence), :1018/:1027 (liveness forwarding). Task consumers: bin/fm-control-lib.sh:355; bin/fm-control.sh:360/:574; bin/fm-crew-state.sh:1301; bin/fm-spawn.sh:1769/:1771; bin/fm-task-inbox-lib.sh:358; bin/fm-teardown.sh:1180/:3292/:3293/:3739/:3769. The ownership guarantee in docs/herdr-backend.md:735 also needs correction.
  • 🚨 bin/fm-teardown.sh:3292 - Forced secondmate cleanup checks child endpoints using the parent's state directory. child_meta comes from $home/state, but the new guard selects ${FM_STATE_OVERRIDE:-$FM_HOME/state} (bin/backends/herdr.sh:2418), and neither changed call switches that context. With no parent record named for the child, the guard returns not-foreign and closes the recycled address even when its cwd and label both belong to an unrelated new pane. Bind both this close and the confirmation at bin/fm-teardown.sh:3293 to FM_STATE_OVERRIDE=$sub_state; preserve that context at every recursive descendant level. This needs only propagation of the already-known owning state directory.
  • 🚨 bin/fm-backend.sh:820 - Active operations check ownership before starting the server, but do not check again afterward. Concrete sequence: the fresh post-rebuild session has reused the old task address for an unrelated pane, then that session is stopped with its new layout saved. fm-send &lt;task&gt; --key C-c reaches this guard; pane get cannot run against the stopped server, so the guard permits continuation. fm_backend_herdr_send_key then calls target_ready, which starts and restores the server, and sends C-c to the unrelated pane. The source explicitly establishes that socket commands do not auto-start the server and that ensure restores layouts. Move or repeat the ownership decision after server readiness at the shared active-operation boundary, preserving task context. Sibling changed pre-read guards: bin/fm-backend.sh:773 (capture), :811 (visible capture), :838 (text submit), :907 (busy state), :930 (composer state); their adapter paths also ensure the server after this check.
  • 🚨 bin/backends/herdr.sh:2430 - Task-specific liveness callers still omit the new expected-label argument, allowing another record to legitimize a stale task. For example, the previous session spawned secondmate B before A; after rebuilding, A is recovered first and its updated record claims B's old address. When B is probed, bin/fm-secondmate-liveness-lib.sh:217 supplies only backend and target. This loop examines both records, accepts A's matching cwd or label, and reports B alive, so bootstrap and watcher recovery leave B dead. Propagate fm-$id from each task-specific liveness caller instead of letting its verdict borrow another claimant's ownership. Shared changed sites where that identity must survive: bin/fm-backend.sh:1018/:1027 (state/alive forwarding), bin/backends/herdr.sh:2478/:2525 (state/alive classification). The automatic session-start path is bin/fm-bootstrap.sh:766, and the watcher uses the same secondmate probe.
  • 🚨 bin/backends/herdr.sh:3735 - The R1 fix round (011b6d2) makes successful teardown impossible for identity-bearing records. After an owned pane is successfully closed, its process-info read fails, so endpoint_foreign returns 2. This branch returns failure before checking structured pane presence, even when pane get would prove pane_not_found. Normal teardown therefore retains the task record, and rerunning cannot finish. Let authoritative pane absence confirm removal even when process identity cannot be read; continue refusing present or ambiguous panes. Affected consumers: bin/fm-teardown.sh:3769 (both flat and projected teardown) and :3293 (child removal confirmation). The new regression at tests/fm-backend-herdr.test.sh:5387 checks liveness after disappearance but does not exercise this removal verdict.
  • 🚨 bin/backends/herdr.sh:2606 - The R1 fix round's new duplicate-tab guard still permits closing foreign shells. Concrete sequence: recovery detects a foreign same-label shell at p1, leaves it untouched, creates p2, and publishes p2's identity. After a subsequent server restart, p2's changed process identity triggers another rebind. When create_task examines the surviving foreign p1 shell, the guard skips the record because window now names p2 (bin/backends/herdr.sh:2438), returns not-foreign, and queues p1 for tab close at :2615/:2631. A sibling bypass occurs during secondmate respawn: bin/fm-spawn.sh:3802 shadows FM_HOME to the child home, although the identity record belongs to the parent's STATE; the guard finds no record and can close the same-label foreign shell immediately. At the shared create-task boundary, preserve unclaimed same-label panes when the task has an identity-bearing record, and carry the owning state directory separately from workspace-label context. Both creation callers must uphold this: bin/fm-spawn.sh:3610 (rebind) and :3802 (fresh/secondmate spawn). Correct the resulting overclaim in docs/herdr-backend.md:748.
  • 🚨 bin/fm-spawn.sh:4892 - The R1 fix round introduces an unconditional Linux-only requirement for every Herdr spawn and relaunch, breaking the existing supported macOS path. On macOS, pane process-info can succeed, but bin/backends/herdr.sh:2405-2408 requires /proc; this call consequently exits before publishing or launching the worker, after endpoint creation and worktree setup. macOS usage is source-backed by bin/fm-install-herdr.sh:44/:48 and the active real-Herdr verification in docs/verification/runtime-backends.md:1113. The devcontainer fix did not authorize dropping that platform, and documenting the new restriction at docs/herdr-backend.md:741 does not resolve the regression. Preserve supported hosts with an equivalent process identity satisfying the approved invariants; if that cannot be established, follow the instruction to stop and report rather than shipping the platform restriction. Authorization is needed for any deliberate support reduction.

🔧 Fix applied.
5 errors still open:

  • 🚨 bin/fm-teardown.sh:3292 - Forced secondmate cleanup checks child endpoints using the parent's state directory. child_meta comes from $home/state, but the new guard selects ${FM_STATE_OVERRIDE:-$FM_HOME/state} (bin/backends/herdr.sh:2418), and neither changed call switches that context. With no parent record named for the child, the guard returns not-foreign and closes the recycled address even when its cwd and label both belong to an unrelated new pane. Bind both this close and the confirmation at bin/fm-teardown.sh:3293 to FM_STATE_OVERRIDE=$sub_state; preserve that context at every recursive descendant level. This needs only propagation of the already-known owning state directory.
  • 🚨 bin/fm-backend.sh:820 - Active operations check ownership before starting the server, but do not check again afterward. Concrete sequence: the fresh post-rebuild session has reused the old task address for an unrelated pane, then that session is stopped with its new layout saved. fm-send &lt;task&gt; --key C-c reaches this guard; pane get cannot run against the stopped server, so the guard permits continuation. fm_backend_herdr_send_key then calls target_ready, which starts and restores the server, and sends C-c to the unrelated pane. The source explicitly establishes that socket commands do not auto-start the server and that ensure restores layouts. Move or repeat the ownership decision after server readiness at the shared active-operation boundary, preserving task context. Sibling changed pre-read guards: bin/fm-backend.sh:773 (capture), :811 (visible capture), :838 (text submit), :907 (busy state), :930 (composer state); their adapter paths also ensure the server after this check.
  • 🚨 bin/backends/herdr.sh:2430 - Task-specific liveness callers still omit the new expected-label argument, allowing another record to legitimize a stale task. For example, the previous session spawned secondmate B before A; after rebuilding, A is recovered first and its updated record claims B's old address. When B is probed, bin/fm-secondmate-liveness-lib.sh:217 supplies only backend and target. This loop examines both records, accepts A's matching cwd or label, and reports B alive, so bootstrap and watcher recovery leave B dead. Propagate fm-$id from each task-specific liveness caller instead of letting its verdict borrow another claimant's ownership. Shared changed sites where that identity must survive: bin/fm-backend.sh:1018/:1027 (state/alive forwarding), bin/backends/herdr.sh:2478/:2525 (state/alive classification). The automatic session-start path is bin/fm-bootstrap.sh:766, and the watcher uses the same secondmate probe.
  • 🚨 bin/backends/herdr.sh:3735 - The R1 fix round (011b6d2) makes successful teardown impossible for identity-bearing records. After an owned pane is successfully closed, its process-info read fails, so endpoint_foreign returns 2. This branch returns failure before checking structured pane presence, even when pane get would prove pane_not_found. Normal teardown therefore retains the task record, and rerunning cannot finish. Let authoritative pane absence confirm removal even when process identity cannot be read; continue refusing present or ambiguous panes. Affected consumers: bin/fm-teardown.sh:3769 (both flat and projected teardown) and :3293 (child removal confirmation). The new regression at tests/fm-backend-herdr.test.sh:5387 checks liveness after disappearance but does not exercise this removal verdict.
  • 🚨 bin/backends/herdr.sh:2606 - The R1 fix round's new duplicate-tab guard still permits closing foreign shells. Concrete sequence: recovery detects a foreign same-label shell at p1, leaves it untouched, creates p2, and publishes p2's identity. After a subsequent server restart, p2's changed process identity triggers another rebind. When create_task examines the surviving foreign p1 shell, the guard skips the record because window now names p2 (bin/backends/herdr.sh:2438), returns not-foreign, and queues p1 for tab close at :2615/:2631. A sibling bypass occurs during secondmate respawn: bin/fm-spawn.sh:3802 shadows FM_HOME to the child home, although the identity record belongs to the parent's STATE; the guard finds no record and can close the same-label foreign shell immediately. At the shared create-task boundary, preserve unclaimed same-label panes when the task has an identity-bearing record, and carry the owning state directory separately from workspace-label context. Both creation callers must uphold this: bin/fm-spawn.sh:3610 (rebind) and :3802 (fresh/secondmate spawn). Correct the resulting overclaim in docs/herdr-backend.md:748.

🔧 Fix applied.
5 issues (4 errors, 1 warning) still open:

  • 🚨 bin/backends/herdr.sh:2430 - Task-specific liveness callers still omit the new expected-label argument, allowing another record to legitimize a stale task. For example, the previous session spawned secondmate B before A; after rebuilding, A is recovered first and its updated record claims B's old address. When B is probed, bin/fm-secondmate-liveness-lib.sh:217 supplies only backend and target. This loop examines both records, accepts A's matching cwd or label, and reports B alive, so bootstrap and watcher recovery leave B dead. Propagate fm-$id from each task-specific liveness caller instead of letting its verdict borrow another claimant's ownership. Shared changed sites where that identity must survive: bin/fm-backend.sh:1018/:1027 (state/alive forwarding), bin/backends/herdr.sh:2478/:2525 (state/alive classification). The automatic session-start path is bin/fm-bootstrap.sh:766, and the watcher uses the same secondmate probe.
  • 🚨 bin/backends/herdr.sh:3735 - The R1 fix round (011b6d2) makes successful teardown impossible for identity-bearing records. After an owned pane is successfully closed, its process-info read fails, so endpoint_foreign returns 2. This branch returns failure before checking structured pane presence, even when pane get would prove pane_not_found. Normal teardown therefore retains the task record, and rerunning cannot finish. Let authoritative pane absence confirm removal even when process identity cannot be read; continue refusing present or ambiguous panes. Affected consumers: bin/fm-teardown.sh:3769 (both flat and projected teardown) and :3293 (child removal confirmation). The new regression at tests/fm-backend-herdr.test.sh:5387 checks liveness after disappearance but does not exercise this removal verdict.
  • 🚨 bin/backends/herdr.sh:2606 - The R1 fix round's new duplicate-tab guard still permits closing foreign shells. Concrete sequence: recovery detects a foreign same-label shell at p1, leaves it untouched, creates p2, and publishes p2's identity. After a subsequent server restart, p2's changed process identity triggers another rebind. When create_task examines the surviving foreign p1 shell, the guard skips the record because window now names p2 (bin/backends/herdr.sh:2438), returns not-foreign, and queues p1 for tab close at :2615/:2631. A sibling bypass occurs during secondmate respawn: bin/fm-spawn.sh:3802 shadows FM_HOME to the child home, although the identity record belongs to the parent's STATE; the guard finds no record and can close the same-label foreign shell immediately. At the shared create-task boundary, preserve unclaimed same-label panes when the task has an identity-bearing record, and carry the owning state directory separately from workspace-label context. Both creation callers must uphold this: bin/fm-spawn.sh:3610 (rebind) and :3802 (fresh/secondmate spawn). Correct the resulting overclaim in docs/herdr-backend.md:748.
  • 🚨 bin/fm-remote-secondmate-control.sh:131 - Round 3 propagated task labels here but left the owning-state context behind. Remote endpoint records live in $TARGET_HOME/state/parent-route, while endpoint_foreign reads $TARGET_HOME/state because the remote worker supplies FM_HOME without FM_STATE_OVERRIDE. If a fresh session reuses the recorded address for another live pane, the guard finds no claiming record and permits it: state reports alive, launch returns the stale route, and capture returns the unrelated pane's terminal contents despite the stored process identity differing. Bind endpoint operations to CONTROL_STATE at the shared remote-control boundary. Remaining siblings in bin/fm-remote-secondmate-control.sh:184 (launch classification), :191 (close), :306 (doorbell), :330 (capture), and :339 (observation); the key subprocess at :319 must also stop overriding that context with TARGET_HOME/state.
  • ⚠️ bin/backends/herdr.sh:1015 - Round 2 (011b6d2) added this unconditional ambient-record guard to a helper that also closes freshly created, response-derived panes. After a rebuild, let A.meta retain fmtest:w3:p2 with its old process identity; a fresh projected spawn of B receives w3:p2 and then fails worktree acquisition before metadata publication. Abort cleanup now judges B's freshly created pane foreign to A and silently leaves its disposable pane/workspace behind. The extra ambient-record check is not required for response-owned resources by the stale-record intent. Revert this part of the fix to the narrower form: retain task-selected ownership checks for recorded teardown/reclaim, but remove ambient-record lookup from same-process response-owned cleanup. Sibling paths in bin/backends/herdr.sh:1897 (seeded-pane prune), :2789 and :2791 (abort cleanup), and :2875 (replacement rollback); :2985 and bin/fm-teardown.sh:3732 still need recorded-task protection.

🔧 Fix applied.
1 error still open:

  • 🚨 bin/fm-remote-secondmate-control.sh:131 - Round 3 propagated task labels here but left the owning-state context behind. Remote endpoint records live in $TARGET_HOME/state/parent-route, while endpoint_foreign reads $TARGET_HOME/state because the remote worker supplies FM_HOME without FM_STATE_OVERRIDE. If a fresh session reuses the recorded address for another live pane, the guard finds no claiming record and permits it: state reports alive, launch returns the stale route, and capture returns the unrelated pane's terminal contents despite the stored process identity differing. Bind endpoint operations to CONTROL_STATE at the shared remote-control boundary. Remaining siblings in bin/fm-remote-secondmate-control.sh:184 (launch classification), :191 (close), :306 (doorbell), :330 (capture), and :339 (observation); the key subprocess at :319 must also stop overriding that context with TARGET_HOME/state.

🔧 Fix applied.
✅ Re-checked - no issues remain.

✅ No issues found.

⚠️ **Test** - 0 issues

✅ No issues found.

  • Live validation: ✅ go - 13 of 14 scenarios driven live against the product
Scenario Result Live Evidence
An owned pane remains usable after exec, tab rename, and cwd drift ✅ pass live live-endpoints.log: unchanged PID/start-time identity and successful owned capture.
A rebuilt session reuses the old address and matching label/cwd, but the surviving task is missing ✅ pass live live-endpoints.log: identical w1:p2/w1:t2 addresses, different process identities, missing/dead verdicts, refused capture/input, and preserved foreign pane.
An unrelated running Claude agent cannot make a stale task appear alive ✅ pass live live-agent-recursive.log: real Claude process with native registration; baseline returned alive, target returned missing, and the foreign process survived.
Secondmate recovery probes use their own task record rather than another claimant ✅ pass live live-endpoints.log: conflicting child-home records; both full and poll probes returned missing:relaunchable for the stale task.
Sending a key to a stopped session checks ownership after restoring the server ✅ pass live live-endpoints.log: server restored to running, key delivery refused, stale binding still missing, and foreign pane remained present.
Relaunch binds a fresh endpoint while preserving uncommitted work and the foreign pane ✅ pass live live-endpoints.log and recovered-endpoint.meta: fm-spawn published w1:p3 with its current identity, retained preserved.txt, and launched a real Claude process.
Closing an owned endpoint confirms removal after its process disappears ✅ pass live live-endpoints.log and live-fresh-fallback.log: owned endpoints closed and authoritative absence confirmed.
Forced recursive secondmate teardown removes stale homes without closing recycled foreign panes ✅ pass live live-agent-recursive.log: teardown completed, descendant homes disappeared, and all three foreign panes—including the running Claude process—remained.
Legacy records retain cwd-or-label compatibility and reject a mismatch in both ✅ pass live live-endpoints.log: matching legacy endpoint remained dead/adoptable; renamed tab with matching cwd remained compatible; mismatching cwd and label returned missing.
Fresh spawn and legacy relaunch continue when the portable identity read fails ✅ pass live live-fresh-fallback.log and live-endpoints.log: real fresh spawn and relaunch launched Claude, omitted unavailable identity, and retained valid endpoint/worktree bindings.
A projected spawn abort cleans its newly created pane despite a stale record claiming that address ✅ pass live projected-abort.log and live-endpoints.log: real allocation failure at w2:p2, no B metadata publication, stale A retained, and final layout contained only parent workspace w1.
An unreadable recorded identity does not authorize capture, input, closure, or absence ✅ pass live live-agent-recursive.log: unreadable verdict, refused capture/key operations, no absence confirmation, and unchanged live Claude process after attempted close.
Host-local remote reads and durable steering consult parent-route ownership ✅ pass live live-endpoints.log: conflicting parent-route and ordinary-home records yielded missing state, empty capture, unknown observation, and a durable inbox message without steering the foreign pane.
The remote key subprocess preserves parent-route ownership during live key delivery ⏸️ untested no Tried the real host-local remote key command against a marked disposable home and isolated Herdr session. Its internally supplied root/state overrides cause the gate to refuse before key delivery. Cop…
  • bash .live-validation/live-scenarios.sh &lt;evidence-directory&gt; against real Herdr 0.9.3: session recreation, recycled addresses, capture/input guards, secondmate probes, stopped-server restoration, relaunch, legacy fallback, and projected abort cleanup.

  • bash .live-validation/extra-scenarios.sh &lt;evidence-directory&gt;: real Claude process ownership, unreadable-identity guards, baseline-versus-target comparison, and forced recursive secondmate teardown.

  • bash .live-validation/fresh-fallback.sh: real Treehouse allocation and fresh Claude launch with a deliberately failed portable process-identity read.

  • Executed baseline fm_backend_agent_state from commit 06a89438bead6193fd300248c5366941a30789d9 against the same live pane and stale record: baseline returned alive; target returned missing.

  • Selected executable cases from tests/fm-backend-herdr.test.sh: previous-session endpoints, matching-label/cwd collisions, portable identity, failed identity reads, response-owned abort cleanup, post-restore guards, secondmate claimant isolation, and descendant teardown.

  • TMPDIR=&lt;workspace-local-temp&gt; bash tests/fm-remote-secondmate-control.test.sh.

  • claude auth status confirmed the normal login is available; bwrap isolation was attempted but denied because unprivileged namespaces are unavailable.

  • All live sessions were provisioned and torn down through bin/fm-herdr-lab.sh; default-session tripwires remained unchanged. Removed disposable fixtures and verified a clean worktree.

  • ⚠️ The Test agent did not finish within its invocation budget. Reported: agent run tests timed out after 30m0s: agent last produced output 3m8s ago (442 observed); agent reported: pi exited: exit status 143. This is a budget or provider-slowness cut, not a code failure. Re-running the same request costs another full budget, so no further attempt is made automatically. If this repository's targeted tests or evidence gathering routinely approach the default 30m0s, raise test_agent_timeout in global config. Respond with fix to spend another budget: a repair turn runs only for selected findings other than this budget cut, then validation re-runs. Or abort and retry after raising the budget.

  • 🚨 Approval is refused: the run worktree at ~/.no-mistakes/worktrees/450411b3e67c/01M47HX8Y8BQRSDDHWXNW190JH holds work no Test turn validated, and the steps after Test would commit and publish it. It holds uncommitted changes to .live-validation/, herdr/ (inspect with git -C ~/.no-mistakes/worktrees/450411b3e67c/01M47HX8Y8BQRSDDHWXNW190JH status and git -C ~/.no-mistakes/worktrees/450411b3e67c/01M47HX8Y8BQRSDDHWXNW190JH diff). Respond with fix to validate it, or abort.

🔧 No changes applied.
✅ Re-checked - no issues remain.

  • Live validation: ✅ go - 6 of 7 scenarios driven live against the product
Scenario Result Live Evidence
Rebuild Herdr and reuse a recorded pane ID: surviving main and secondmate records report missing ✅ pass live live-reused-endpoint.log: recreated w1:p2 with a different process identity; both home contexts returned missing despite matching label and cwd.
Try to capture, steer or close an unrelated pane through a stale record: access is refused ✅ pass live live-reused-endpoint.log: capture, key and text refused in both homes; guarded close retained the unrelated pane and no injected command executed.
Keep the same root process, then probe a real running CLI: current ownership stays valid and stale ownership does not ✅ pass live live-reused-endpoint.log: exec preserved the identity; the process-backed Claude registration read alive with the current binding and missing with the stale binding.
Relaunch a stale task: bind a fresh endpoint without losing its worktree or unlanded data ✅ pass live live-reused-endpoint.log and live-original.meta/live-rebound.meta: recovery changed w1:p2 to w1:p3, published its new identity and preserved the worktree and sentinel file.
Clean up an aborted projected spawn and retire recorded endpoints without closing an unrelated pane ✅ pass live live-reused-endpoint.log: failed acquisition left no B record, pane or workspace despite stale A claiming its address; stale-child and owned-endpoint teardown completed while retaining the unrelated p…
Spawn flat and projected workers, then recover legacy restart records across homes: metadata and exact recovery contracts remain intact ✅ pass live herdr-presentation-live.log passed the metadata comparison; focused-herdr-recovery-result.log passed primary, repeated, secondmate-child and concurrent recovery cases.
Use host-local remote control after endpoint reuse: parent-route ownership governs access ⏸️ untested no Disposable XDG/socket isolation worked for named labs, but the remote public command hardcodes fm-remote, which the mandatory lab helper refuses. No call was made against that shared session. Live int…
  • bash tests/fm-backend-herdr.test.sh — passed.
  • bash tests/fm-remote-secondmate-control.test.sh — passed.
  • bash tests/fm-teardown-endpoint-safety.test.sh — passed.
  • bash tests/fm-backend-herdr-presentation-e2e.test.sh — bounded at 360 seconds; metadata comparison and preceding spawn/cleanup checks passed, but the complete suite is not claimed passing.
  • Ran focused-herdr-recovery.sh through run-lab-test.py — edited primary, repeated, secondmate-child and concurrent recovery cases passed against real Herdr and Treehouse.
  • Ran live-reused-endpoint.sh through run-lab-test.py — recreated a named session, verified reused IDs, ownership refusals, process-backed liveness, relaunch, preserved worktree data and cleanup.
  • bin/fm-herdr-lab.sh provision fm-remote — confirmed the mandatory helper refuses the remote command's fixed non-lab session name.
  • Tore down isolated labs, removed transient scratch and checked git status --porcelain — clean.
✅ **Document** - passed

✅ No issues found.

✅ No issues found.

🔧 **Lint** - 1 issue found → auto-fixed ✅
  • ⚠️ linter found issues (exit code 1)

🔧 Fix applied.
✅ Re-checked - no issues remain.

✅ No issues found.

✅ **Push** - passed

✅ No issues found.

✅ No issues found.

A herdr pane id recorded before a server restart or devcontainer rebuild can
be reused by an unrelated pane in the fresh session. Liveness, delivery,
control, relaunch and teardown read only the pane at the recorded id, so a
foreign pane could be steered, adopted or closed as the task's endpoint.

Bind the recorded endpoint to its task: a pane is foreign when its foreground
cwd is outside the recorded worktree and its tab label is not fm-<id>.
Foreign endpoints classify as missing so the existing relaunch path rebinds,
and are never steered, interrupted, exited or killed. Records that cannot be
checked keep working.
… process identity when comparing flat/projected metadata, remove three unused mocks, add callback-specific SC2329 annotations, and correct the shared-library source annotation because SC1091 fails the lint gate. Production identity, portable fallback, and response-owned cleanup behavior remain unchanged; ci-1 was untouched. The reported broken-pipe lines are unchanged from base and were left alone. Verification passed: full bounded ShellCheck 0.11.0 on all three changed files, complete backend behavior suite, remote-control suite, and a metadata-contract replay that fails before normalization and passes afterward while still rejecting missing identity fields and unrelated changes. The full real-Herdr presentation run was blocked before comparison by the local relative-socket/presentation-lock mismatch; it is not claimed as passing. Removed temporary diagnostics; only the three intended test files remain changed
…h: in-place restart-reclaim fixtures now explicitly use legacy records without process identities across primary, repeated, secondmate, and concurrent recovery paths. Primary cases first verify that identity-bearing records reject replacement shells. Production ownership guarantees remain unchanged. Reproduced the reported failure before the fix; focused real-Herdr verification of all edited recovery paths passes afterward. The complete backend behavior suite, ShellCheck, bash syntax check, and git diff --check pass. Full presentation verification stopped earlier at an unchanged focus-wave cleanup assertion on local Herdr 0.9.3, so it is not claimed passing. The portable Stop-hook timeout matches the previously declined pre-existing failure and was left untouched. Temporary diagnostics and test infrastructure were removed
@cloud-practitioner
cloud-practitioner force-pushed the fm/fm-herdr-stale-session-endpoint branch from b0254f7 to e5f2386 Compare October 6, 2026 23:50
@cloud-practitioner
cloud-practitioner merged commit e2b9778 into main Oct 7, 2026
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