test: enforce brief scaffolding under stock macOS Bash by moneyteamameen · Pull Request #1877 · kunchenguid/firstmate

moneyteamameen · 2026-08-07T08:28:59Z

Intent

Fix Firstmate execution card FM-BRIEF-001 so bin/fm-brief.sh reliably scaffolds ship and scout briefs under stock macOS Bash 3.2 when generated prose, interpolated repository names, or quoted paths contain apostrophes. Reproduce the historical heredoc-inside-command-substitution parse failure, use the smallest style-consistent solution, preserve generated brief bytes and all no-mistakes, direct-PR, local-only, and scout behavior, and add focused regression coverage that explicitly runs /bin/bash syntax and scaffolding checks for every ordinary-task mode with exact assertions for literal commands, paths, variables, placeholders, quoting, and mode-specific sections. Do not change dispatch policy, task lifecycle semantics, unrelated scaffolding text, or authoritative docs unless the implementation contract changes, and never merge the PR. Investigation established that the structural implementation fix is already present on the current default branch from prior work, so this branch must add the missing explicit Bash 3.2 runtime enforcement without churning generated production bytes.

What Changed

Run fm-brief.sh syntax and scaffolding checks explicitly through /bin/bash.
Add apostrophe-bearing fixtures with exact assertions across no-mistakes, direct-PR, local-only, and scout briefs.
Execute the 21-check brief suite in the stock macOS Bash 3.2 CI job.

Risk Assessment

✅ Low: The change is test-only, preserves production brief bytes, and adds explicit stock Bash 3.2 syntax and apostrophe-bearing scaffolding coverage for all ordinary-task modes.

Testing

No prior baseline results were supplied. Stock macOS /bin/bash 3.2.57 reproduced the historical heredoc/apostrophe parse failure, then passed the focused suite and exact CI count contract; all four ordinary-task modes scaffolded correctly with apostrophes while preserving literal placeholders, quoting, commands, paths, and mode sections. One initial CI-wrapper attempt inherited zsh and failed before testing because BASH_VERSION was unset; rerunning with the configured /bin/bash succeeded. The worktree remained clean. This is CLI-generated Markdown, so reviewer-visible brief artifacts were captured instead of screenshots.

Evidence: Historical Bash 3.2 failure reproduction

GNU Bash 3.2.57 reports “unexpected EOF while looking for matching '” and exits 2, reproducing the historical parser defect.

#!/bin/bash

brief=$(cat <<EOF
Firstmate's authority check must remain intact.
EOF
)

printf '%s\n' "$brief"

Evidence: No-mistakes brief

Generated with an apostrophe-bearing repository and FM_HOME; SHA-256 d495afdf116593d3109884070989adaad5274e6fe65c234ae721cd74e191b9d1.

You are a crewmate: an autonomous worker agent managed by firstmate. Work on your own; do not wait for a human.

# Task
{TASK}

# Herdr lifecycle declaration - NOT ENABLED
**HARD SAFETY GATE:** this scaffold cannot inspect the task text that replaces `{TASK}` later.
If the task will start, stop, delete, restart, profile, or otherwise drive Herdr lifecycle behavior, stop and regenerate the brief with `--herdr-lab` before dispatch.
Do not add Herdr lifecycle commands to this unguarded brief by hand.

# Setup
You are in a disposable git worktree of captain's repo, at a detached HEAD on a clean default branch.

**Verify isolation before anything else.** Run `pwd -P` and `git rev-parse --show-toplevel`; both must resolve to the disposable task worktree you were launched in, such as a treehouse pool path or an Orca-managed worktree, not the primary checkout firstmate operates from.
The path check is authoritative: `git rev-parse --git-dir` and `git rev-parse --git-common-dir` can help inspect the repo, but they do not prove you are outside the primary checkout.
If the top-level path is the primary checkout or not the worktree you were launched in, STOP - do not branch or commit here - append `blocked: launched in primary checkout, not an isolated worktree` to the status file and stop.

1. First action: create your branch: `git checkout -b fm/apostrophe-nm`
2. Run `no-mistakes doctor`; if it reports the repo is not initialized here, run `no-mistakes init`.

# Rules
1. Never push to the default branch. Never merge a PR.
2. Stay inside this worktree; modify nothing outside it.
3. Use gh-axi for GitHub operations and chrome-devtools-axi for browser operations.
4. Report status by appending one line:
   `echo "{state}: {one short line}" >> '/var/folders/s8/0_mzgfjj34v2wr0gvxxh64n80000gn/T/no-mistakes-evidence/01KZDMV5V39SJNJY8MCBNBE59Z/captain'\''s evidence/state/apostrophe-nm.status'`
   States: working, needs-decision, blocked, paused, done, failed.
   Each append wakes firstmate, so report sparingly: only phase changes a supervisor
   would act on (setup done, bug reproduced, fix implemented, validation passed) and the
   needs-decision/blocked/paused/done/failed states. No step-by-step FYI progress lines;
   firstmate reads your pane for that.
   A mid-task `working:` line (including setup complete) is nonterminal: do not end the
   turn after it; continue the same stage until a defined `done:` gate under Definition of done.
   Use `paused: {why}` - distinct from `blocked:` - ONLY when you are deliberately idling on a
   known external wait you expect to clear on its own (an upstream release, a rate-limit reset,
   a scheduled window): firstmate then leaves your idle pane alone and rechecks it on a long
   cadence instead of treating it as a possible wedge. Use `blocked:` when you are stuck and need help.
5. If you hit the same obstacle twice, append `blocked: {why}` and stop; firstmate will help.
6. If a decision belongs above the implementation worker (product choices, destructive actions, ask-user findings),
   append `needs-decision: {summary of options}` and stop. Firstmate will apply the configured authority and reply with the decision.
   A decision or blocker you opened stays open until a `resolved` line carrying its exact key lands; a later `done:` or `working:` line never closes it, even when the answer is what started that work.
   Firstmate's reply normally writes that closing line at answer time; when a blocker or wait clears WITHOUT a firstmate reply, append `resolved: {how it cleared}` yourself (same `[key=<slug>]` if you opened it with one) as you resume.
7. Never stop, restart, or update the shared `no-mistakes` daemon - it is one instance serving
   every lane/home, so restarting it kills other lanes' in-flight pipeline runs. On ANY no-mistakes
   daemon error, append `blocked: {the daemon error}` and stop; only firstmate manages the daemon.

# Project memory
If `AGENTS.md` or `CLAUDE.md` already exists, or if this task produced durable project-intrinsic knowledge, run `/Users/mohammedameen/.no-mistakes/worktrees/ac543050f1c8/01KZDMV5V39SJNJY8MCBNBE59Z/bin/fm-ensure-agents-md.sh .` in the worktree.
Record only project knowledge useful to almost every future session.
For anything the codebase already shows, prefer a pointer to the authoritative file, command, or doc over copying the detail.
If you touch a project `AGENTS.md` that lacks `## Maintaining this file`, add that short self-governance section from `/Users/mohammedameen/.no-mistakes/worktrees/ac543050f1c8/01KZDMV5V39SJNJY8MCBNBE59Z/bin/fm-ensure-agents-md.sh` in the same pass.
Keep it proportionate: skip `AGENTS.md` edits for trivial tasks that produced no durable project knowledge.

# Definition of done
Delivery contract: mode=no-mistakes
The task is complete only when committed on your branch.
When you believe it is complete, append `done: {summary}` to the status file and stop.
Firstmate will then instruct you to run /no-mistakes to validate and ship a PR.

You drive no-mistakes by responding to its gates, not by implementing fixes.
Follow the guidance no-mistakes itself provides for the mechanics: it loads when you invoke /no-mistakes, and `no-mistakes axi run --help` plus the `help` lines in each `axi` response are authoritative and version-matched to the installed binary.
When starting no-mistakes, make `--intent` preserve all relevant content from this brief's `# Task` section plus every later accepted Firstmate requirement, clarification, constraint, exclusion, and supersession, carrying only each requirement's current accepted form; retain direct requirements instead of substituting a diff summary, and exclude generic operational, status, delivery, and other scaffold boilerplate unless it is task-specific.
Do not hand-edit, commit, or fix findings yourself while a run is active - the pipeline applies every fix.

Two firstmate-specific rules layer on top of that guidance:
- ask-user findings are never yours to answer: escalate to firstmate (rule 6) and stop.
  Firstmate applies the authority contract in its `AGENTS.md` and obtains any required captain decision.
  When the decision comes back, feed it to the gate with `no-mistakes axi respond` and let the pipeline apply it - do not route the question to "the user" or implement the fix yourself.
- Avoid `--yes`: it would silently bypass firstmate's authority check and any required captain escalation.

After /no-mistakes reports CI green (the CI-ready return point - do not wait for it to keep monitoring in the background until merge), append `done: PR {url} checks green` and stop. You are finished.

Evidence: Direct-PR brief

Generated with an apostrophe-bearing repository and FM_HOME; SHA-256 2251d81e7e2e7a2a12fd9c6ec0ac8b0ac769e7df3aba400ad274e2509f825956.

You are a crewmate: an autonomous worker agent managed by firstmate. Work on your own; do not wait for a human.

# Task
{TASK}

# Herdr lifecycle declaration - NOT ENABLED
**HARD SAFETY GATE:** this scaffold cannot inspect the task text that replaces `{TASK}` later.
If the task will start, stop, delete, restart, profile, or otherwise drive Herdr lifecycle behavior, stop and regenerate the brief with `--herdr-lab` before dispatch.
Do not add Herdr lifecycle commands to this unguarded brief by hand.

# Setup
You are in a disposable git worktree of captain's repo, at a detached HEAD on a clean default branch.

**Verify isolation before anything else.** Run `pwd -P` and `git rev-parse --show-toplevel`; both must resolve to the disposable task worktree you were launched in, such as a treehouse pool path or an Orca-managed worktree, not the primary checkout firstmate operates from.
The path check is authoritative: `git rev-parse --git-dir` and `git rev-parse --git-common-dir` can help inspect the repo, but they do not prove you are outside the primary checkout.
If the top-level path is the primary checkout or not the worktree you were launched in, STOP - do not branch or commit here - append `blocked: launched in primary checkout, not an isolated worktree` to the status file and stop.

1. First action: create your branch: `git checkout -b fm/apostrophe-direct`

# Rules
1. Never push to the default branch (push only your `fm/apostrophe-direct` branch). Never merge a PR.
2. Stay inside this worktree; modify nothing outside it.
3. Use gh-axi for GitHub operations and chrome-devtools-axi for browser operations.
4. Report status by appending one line:
   `echo "{state}: {one short line}" >> '/var/folders/s8/0_mzgfjj34v2wr0gvxxh64n80000gn/T/no-mistakes-evidence/01KZDMV5V39SJNJY8MCBNBE59Z/captain'\''s evidence/state/apostrophe-direct.status'`
   States: working, needs-decision, blocked, paused, done, failed.
   Each append wakes firstmate, so report sparingly: only phase changes a supervisor
   would act on (setup done, bug reproduced, fix implemented, validation passed) and the
   needs-decision/blocked/paused/done/failed states. No step-by-step FYI progress lines;
   firstmate reads your pane for that.
   A mid-task `working:` line (including setup complete) is nonterminal: do not end the
   turn after it; continue the same stage until a defined `done:` gate under Definition of done.
   Use `paused: {why}` - distinct from `blocked:` - ONLY when you are deliberately idling on a
   known external wait you expect to clear on its own (an upstream release, a rate-limit reset,
   a scheduled window): firstmate then leaves your idle pane alone and rechecks it on a long
   cadence instead of treating it as a possible wedge. Use `blocked:` when you are stuck and need help.
5. If you hit the same obstacle twice, append `blocked: {why}` and stop; firstmate will help.
6. If a decision belongs above the implementation worker (product choices, destructive actions, ask-user findings),
   append `needs-decision: {summary of options}` and stop. Firstmate will apply the configured authority and reply with the decision.
   A decision or blocker you opened stays open until a `resolved` line carrying its exact key lands; a later `done:` or `working:` line never closes it, even when the answer is what started that work.
   Firstmate's reply normally writes that closing line at answer time; when a blocker or wait clears WITHOUT a firstmate reply, append `resolved: {how it cleared}` yourself (same `[key=<slug>]` if you opened it with one) as you resume.
7. Never stop, restart, or update the shared `no-mistakes` daemon - it is one instance serving
   every lane/home, so restarting it kills other lanes' in-flight pipeline runs. On ANY no-mistakes
   daemon error, append `blocked: {the daemon error}` and stop; only firstmate manages the daemon.

# Project memory
If `AGENTS.md` or `CLAUDE.md` already exists, or if this task produced durable project-intrinsic knowledge, run `/Users/mohammedameen/.no-mistakes/worktrees/ac543050f1c8/01KZDMV5V39SJNJY8MCBNBE59Z/bin/fm-ensure-agents-md.sh .` in the worktree.
Record only project knowledge useful to almost every future session.
For anything the codebase already shows, prefer a pointer to the authoritative file, command, or doc over copying the detail.
If you touch a project `AGENTS.md` that lacks `## Maintaining this file`, add that short self-governance section from `/Users/mohammedameen/.no-mistakes/worktrees/ac543050f1c8/01KZDMV5V39SJNJY8MCBNBE59Z/bin/fm-ensure-agents-md.sh` in the same pass.
Keep it proportionate: skip `AGENTS.md` edits for trivial tasks that produced no durable project knowledge.

# Definition of done
Delivery contract: mode=direct-PR
This task ships **direct-PR**: you raise the PR yourself, without the no-mistakes pipeline.
The task is complete only when committed on your branch.
When it is implemented and committed, push your branch and open a PR with `gh-axi`, then append `done: PR {url}` to the status file and stop.
Do NOT run /no-mistakes. The configured merge authority decides whether to merge the PR; firstmate relays the outcome.

Evidence: Local-only brief

Generated with an apostrophe-bearing repository and FM_HOME; SHA-256 2db9b6320f47c11409d1f8836c484aafeb58c534b1dc545a41afb7ce61aac3d7.

You are a crewmate: an autonomous worker agent managed by firstmate. Work on your own; do not wait for a human.

# Task
{TASK}

# Herdr lifecycle declaration - NOT ENABLED
**HARD SAFETY GATE:** this scaffold cannot inspect the task text that replaces `{TASK}` later.
If the task will start, stop, delete, restart, profile, or otherwise drive Herdr lifecycle behavior, stop and regenerate the brief with `--herdr-lab` before dispatch.
Do not add Herdr lifecycle commands to this unguarded brief by hand.

# Setup
You are in a disposable git worktree of captain's repo, at a detached HEAD on a clean default branch.

**Verify isolation before anything else.** Run `pwd -P` and `git rev-parse --show-toplevel`; both must resolve to the disposable task worktree you were launched in, such as a treehouse pool path or an Orca-managed worktree, not the primary checkout firstmate operates from.
The path check is authoritative: `git rev-parse --git-dir` and `git rev-parse --git-common-dir` can help inspect the repo, but they do not prove you are outside the primary checkout.
If the top-level path is the primary checkout or not the worktree you were launched in, STOP - do not branch or commit here - append `blocked: launched in primary checkout, not an isolated worktree` to the status file and stop.

1. First action: create your branch: `git checkout -b fm/apostrophe-local`

# Rules
1. Never push to any remote and never open a PR. Work only on your `fm/apostrophe-local` branch; firstmate handles the merge into local `main`.
2. Stay inside this worktree; modify nothing outside it.
3. Use gh-axi for GitHub operations and chrome-devtools-axi for browser operations.
4. Report status by appending one line:
   `echo "{state}: {one short line}" >> '/var/folders/s8/0_mzgfjj34v2wr0gvxxh64n80000gn/T/no-mistakes-evidence/01KZDMV5V39SJNJY8MCBNBE59Z/captain'\''s evidence/state/apostrophe-local.status'`
   States: working, needs-decision, blocked, paused, done, failed.
   Each append wakes firstmate, so report sparingly: only phase changes a supervisor
   would act on (setup done, bug reproduced, fix implemented, validation passed) and the
   needs-decision/blocked/paused/done/failed states. No step-by-step FYI progress lines;
   firstmate reads your pane for that.
   A mid-task `working:` line (including setup complete) is nonterminal: do not end the
   turn after it; continue the same stage until a defined `done:` gate under Definition of done.
   Use `paused: {why}` - distinct from `blocked:` - ONLY when you are deliberately idling on a
   known external wait you expect to clear on its own (an upstream release, a rate-limit reset,
   a scheduled window): firstmate then leaves your idle pane alone and rechecks it on a long
   cadence instead of treating it as a possible wedge. Use `blocked:` when you are stuck and need help.
5. If you hit the same obstacle twice, append `blocked: {why}` and stop; firstmate will help.
6. If a decision belongs above the implementation worker (product choices, destructive actions, ask-user findings),
   append `needs-decision: {summary of options}` and stop. Firstmate will apply the configured authority and reply with the decision.
   A decision or blocker you opened stays open until a `resolved` line carrying its exact key lands; a later `done:` or `working:` line never closes it, even when the answer is what started that work.
   Firstmate's reply normally writes that closing line at answer time; when a blocker or wait clears WITHOUT a firstmate reply, append `resolved: {how it cleared}` yourself (same `[key=<slug>]` if you opened it with one) as you resume.
7. Never stop, restart, or update the shared `no-mistakes` daemon - it is one instance serving
   every lane/home, so restarting it kills other lanes' in-flight pipeline runs. On ANY no-mistakes
   daemon error, append `blocked: {the daemon error}` and stop; only firstmate manages the daemon.

# Project memory
If `AGENTS.md` or `CLAUDE.md` already exists, or if this task produced durable project-intrinsic knowledge, run `/Users/mohammedameen/.no-mistakes/worktrees/ac543050f1c8/01KZDMV5V39SJNJY8MCBNBE59Z/bin/fm-ensure-agents-md.sh .` in the worktree.
Record only project knowledge useful to almost every future session.
For anything the codebase already shows, prefer a pointer to the authoritative file, command, or doc over copying the detail.
If you touch a project `AGENTS.md` that lacks `## Maintaining this file`, add that short self-governance section from `/Users/mohammedameen/.no-mistakes/worktrees/ac543050f1c8/01KZDMV5V39SJNJY8MCBNBE59Z/bin/fm-ensure-agents-md.sh` in the same pass.
Keep it proportionate: skip `AGENTS.md` edits for trivial tasks that produced no durable project knowledge.

# Definition of done
Delivery contract: mode=local-only
This task ships **local-only**: no remote, no PR, no pipeline.
The task is complete only when committed on your branch `fm/apostrophe-local`. Do NOT push, do NOT open a PR, do NOT merge.
Keep your branch a clean fast-forward onto the current default branch - if `main` has advanced, rebase onto it so the eventual merge stays a fast-forward.
When it is implemented and committed, append `done: ready in branch fm/apostrophe-local` to the status file and stop.
The configured merge authority approves the ready branch, then firstmate merges it into local `main` through the guarded fast-forward path.

Evidence: Scout brief

Generated with an apostrophe-bearing repository and FM_HOME; SHA-256 cd092eb930349b2b59e368c96c0645ab524096c1543980d7906a72831ddca91a.

You are a crewmate: an autonomous worker agent managed by firstmate. Work on your own; do not wait for a human.

# Task
{TASK}

# Herdr lifecycle declaration - NOT ENABLED
**HARD SAFETY GATE:** this scaffold cannot inspect the task text that replaces `{TASK}` later.
If the task will start, stop, delete, restart, profile, or otherwise drive Herdr lifecycle behavior, stop and regenerate the brief with `--herdr-lab` before dispatch.
Do not add Herdr lifecycle commands to this unguarded brief by hand.

# Setup
You are in a disposable git worktree of captain's repo, at a detached HEAD on a clean default branch.
This is a SCOUT task: the deliverable is a written report, not a PR.
The worktree is your laboratory - install, run, edit, and make scratch commits freely; all of it is discarded at teardown.
The report is the only thing that survives, so anything worth keeping must be in it.

# Rules
1. Never push to any remote and never open a PR.
2. Stay inside this worktree; the only files you may write outside it are the report and the status file below.
3. Use gh-axi for GitHub operations and chrome-devtools-axi for browser operations.
4. Report status by appending one line:
   `echo "{state}: {one short line}" >> '/var/folders/s8/0_mzgfjj34v2wr0gvxxh64n80000gn/T/no-mistakes-evidence/01KZDMV5V39SJNJY8MCBNBE59Z/captain'\''s evidence/state/apostrophe-scout.status'`
   States: working, needs-decision, blocked, paused, done, failed.
   Each append wakes firstmate, so report sparingly: only phase changes a supervisor
   would act on and the needs-decision/blocked/paused/done/failed states. No step-by-step
   FYI progress lines; firstmate reads your pane for that.
   Use `paused: {why}` - distinct from `blocked:` - ONLY when you are deliberately idling on a
   known external wait you expect to clear on its own (an upstream release, a rate-limit reset):
   firstmate then leaves your idle pane alone and rechecks it on a long cadence instead of
   treating it as a possible wedge. Use `blocked:` when you are stuck and need help.
5. If you hit the same obstacle twice, append `blocked: {why}` and stop; firstmate will help.
6. If a decision belongs to a human (product choices, destructive actions),
   append `needs-decision: {summary of options}` and stop. Firstmate will reply with the decision.
   A decision or blocker you opened stays open until a `resolved` line carrying its exact key lands; a later `done:` or `working:` line never closes it, even when the answer is what started that work.
   Firstmate's reply normally writes that closing line at answer time; when a blocker or wait clears WITHOUT a firstmate reply, append `resolved: {how it cleared}` yourself (same `[key=<slug>]` if you opened it with one) as you resume.
7. Never stop, restart, or update the shared `no-mistakes` daemon - it is one instance serving
   every lane/home, so restarting it kills other lanes' in-flight pipeline runs. On ANY no-mistakes
   daemon error, append `blocked: {the daemon error}` and stop; only firstmate manages the daemon.

# Definition of done
Write your findings to `/var/folders/s8/0_mzgfjj34v2wr0gvxxh64n80000gn/T/no-mistakes-evidence/01KZDMV5V39SJNJY8MCBNBE59Z/captain's evidence/data/apostrophe-scout/report.md`.
The report must stand alone: what you did, what you found, the evidence (commands run, output, file:line references), and what you recommend.
Before reporting done, read and follow `/Users/mohammedameen/.no-mistakes/worktrees/ac543050f1c8/01KZDMV5V39SJNJY8MCBNBE59Z/.agents/skills/decision-hold-lifecycle/SKILL.md` and pass its shared completion gate for the report and any visual review.
When the report is complete, append `done: {one-line conclusion}` to the status file and stop.
If your findings reveal work that should ship (e.g. you reproduced a bug and the fix is clear), say so in the report; firstmate may promote this task in place, and you would then receive mode-specific ship instructions as a follow-up message.

Evidence: Generator byte preservation

Base and target both reference generator blob a873c840517af4f45fee49de841d6e6c23b49934, confirming no production-generator byte churn.

Pipeline

Updates from git push no-mistakes

✅ **intent** - passed

✅ No issues found.

✅ **Rebase** - passed

✅ No issues found.

✅ **Review** - passed

✅ No issues found.

✅ **Test** - passed

✅ No issues found.

/bin/bash --version | head -1
/bin/bash tests/fm-brief.test.sh
CI-equivalent Bash 3.2 wrapper invoking /bin/bash tests/fm-brief.test.sh and asserting exactly 21 successful checks
/bin/bash -n .../historical-heredoc-apostrophe.sh (expected historical failure, exit 2)
FM_HOME=".../captain's evidence" /bin/bash bin/fm-brief.sh apostrophe-nm "captain's repo" --mode no-mistakes
FM_HOME=".../captain's evidence" /bin/bash bin/fm-brief.sh apostrophe-direct "captain's repo" --mode direct-PR
FM_HOME=".../captain's evidence" /bin/bash bin/fm-brief.sh apostrophe-local "captain's repo" --mode local-only
FM_HOME=".../captain's evidence" /bin/bash bin/fm-brief.sh apostrophe-scout "captain's repo" --scout
Compared base and target bin/fm-brief.sh Git blob IDs and generated-brief contents, quoting, placeholders, paths, commands, and mode-specific sections.

✅ **Document** - passed

✅ No issues found.

⚠️ **Lint** - 1 warning

⚠️ linter found issues (exit code 127)

✅ **Push** - passed

✅ No issues found.

…unchenguid#1229) * fix: remove projected workspaces through Herdr's focus-preserving pane-death path Herdr 0.7.5's explicit close of a workspace-emptying last pane moves the attached client's focus to a neighbor workspace, flashing the captain's whole window and routing in-flight keystrokes to the wrong pane until Firstmate's exact-tab restore masks it 56-197 ms later. Teardown and cleanup now plan a workspace-emptying close as a focus-safe removal: verify the close empties the workspace, reposition the doomed workspace behind the focused one through the verified workspace.move transport when it sits before a non-last focused workspace, prove the pane holds one lone idle shell, and end that shell so Herdr removes the emptied workspace through its focus-preserving pane-death path. Any ambiguity or failure falls back to the plain close behind the existing restore backstop, and fm_backend_herdr_kill applies the same plan for non-projected removals. Two conditions proven on real hardware are encoded in the adapter: BSD ps reports a login shell's comm as "-zsh", and an idle shell transiently hosts a prompt helper right after a workspace.move relayout, absorbed by a bounded strict-sample settle window in the idle-shell proof, now the single owner shared with session-start cleanup. An isolated-lab regression reproduces the raw steal on 0.7.5 and proves the plan removes a doomed workspace with zero wrong-focus samples and no corrective focus; unit fixtures cover the position, edge, ambiguity, move and kill failure, escalation, and transient-helper cases. Upstream fixes (kunchenguid#1877 explicit close, kunchenguid#1912 pane death) are merged but unreleased; once released the plan degrades to a harmless reorder-then-remove. * no-mistakes(review): Confirm pane death from structured not-found responses * no-mistakes(review): Serialize Herdr kills and sample focus continuously * no-mistakes(review): Synchronize Herdr focus evidence output * no-mistakes(review): Refuse unlocked Herdr pane closes * no-mistakes(document): Correct Herdr focus-safety documentation * no-mistakes: apply CI fixes * fix: never erase a Herdr task's records while its pane survives a refused close A transient presentation-lock contention could produce a completed teardown while the exact Herdr pane stayed alive as an unowned restored shell: the kill refused the unlocked close (correctly), returned success, the warning was suppressed, and cleanup erased the task's status, turn-end, and metadata records after the isolated copy had already been returned. Teardown now acquires the named-session presentation lock before anything destructive: a contended lock refuses up front while the isolated copy, the task branch, every durable record, and the endpoint are all intact for a plain rerun, and the projected and flat close paths both run under that one held lock instead of acquiring their own. Durable records are erased only once the exact pane is confirmed gone through its structured presence; a refused, skipped, or failed close retains every record with a visible, retryable error, and after a skipped close (unresolvable lock path) only a structured pane_not_found counts as gone - unknown never does. The teardown regression drives a live contending lock holder end to end: the refusal touches nothing (no worktree return, no branch drop, no close attempt), and the retry after release returns the copy, closes the pane under the lock, and removes the records. The unconfirmed projected close now refuses with records retained, and the structured-presence gate has a strict/default unit matrix. * no-mistakes(review): Require structured pane-not-found before Herdr record removal * no-mistakes(document): Correct Herdr record-retention verification date * fix: refuse ambiguity, revalidate SIGKILL ownership, and roll back failed removals Three accepted-contract corrections from the post-CI personal review of the Herdr keep-spaces focus-flash mitigation. Ambiguous endpoint identity no longer counts as a confirmed-gone pane: a missing or malformed target refuses record removal in the structured presence gate, and teardown treats missing confirmation machinery as a refusal instead of skipping the gate, so only an exact structured pane_not_found ever erases durable task records. The pane-death SIGKILL escalation re-reads the exact pane's process information and refuses to signal unless the same shell pid still passes the strict bare-idle ownership proof, so a pid that exited and was reused by an unrelated process is never signaled; the refused escalation falls back to the plain close with the unrelated process untouched. A reposition whose removal is not confirmed no longer outlives the attempt: the emptying-close plan records the verified pre-move order and original index whenever it invokes the mover, and both close owners restore the exact original workspace order through a second verified move, under the same held session lock, before reporting the close as failed. Each defect was reproduced first: the unit matrix documented malformed identity as gone, the PID-reuse regression showed SIGKILL reaching a disowned pid, and the rollback regression showed a single unrestored move. Teardown-level regressions cover unparseable presence retention alongside the strict identity matrix. * no-mistakes(review): Require confirmed Herdr removal and resolvable teardown locks * no-mistakes(review): Enforce structured Herdr closes and teardown preflight * no-mistakes(review): Preflight explicit Herdr close confirmation helper * no-mistakes(document): Document Herdr rollback failure semantics * no-mistakes(review): Captain, harden recursive Herdr teardown safety * no-mistakes(document): Document recursive Herdr teardown evidence * fix: retain nested secondmate home when a recursive child cleanup fails Captain-decided Option A correction for nm-askuser-flash-r6, found during complete-diff rereview of the merged head. cleanup_firstmate_home_children's recursive secondmate branch called itself for a nested child's home without checking the result, then unconditionally removed that home right after. remove_firstmate_home ends in an unconditional recursive delete with no check for leftover records, so a nested secondmate whose own Herdr grandchild failed its confirmed-gone check would have its entire home - retained grandchild records included - erased by the very next line. Guard the recursive call the same way every other fallible call in this function already is: || return 1, skipping remove_firstmate_home and leaving the nested home and its records for a safe rerun. Empirically, fm-teardown.sh's set -eu already halted the script on the prior unguarded call before reaching removal (verified by hand with the guard reverted, under both this session's bash and stock macOS bash 3.2) - the reachable behavior was already correct. The explicit guard is still applied exactly as decided: it matches every sibling call site in the function, and it stops the correctness of this path depending on errexit's well-known fragility under refactors (a wrapping if/&&, or a future subshell) rather than on an explicit check. Adds a teardown-level regression building on the existing direct-child Herdr fixtures: a top-level secondmate contains a nested secondmate, whose own Herdr child's close goes unconfirmed. Proves through the public fm-teardown.sh interface that the nested home, the nested secondmate's own record, and the grandchild's metadata and status all survive, and that the top-level secondmate's record survives too. * no-mistakes(document): Document nested Herdr teardown retention

test(brief): enforce apostrophe scaffolds on Bash 3.2

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This was referenced Aug 7, 2026

[firstmate#1877] test: enforce brief scaffolding under stock macOS Bash kunchenguid/wheelhouse#2210

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[firstmate#1874] feat(bin): encode bead-closure delivery discipline in doctrine and ... kunchenguid/wheelhouse#2216

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test: enforce brief scaffolding under stock macOS Bash - #1877

test: enforce brief scaffolding under stock macOS Bash#1877
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moneyteamameen commented Aug 7, 2026

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