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feat(reviewer): one isolated sandbox container per needs job (#435) - #463

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tps-flint merged 8 commits into
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feat/435-fresh-tree-per-job
Oct 2, 2026
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tps-flint merged 8 commits into
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feat/435-fresh-tree-per-job

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@tps-anvil

@tps-anvil tps-anvil commented Oct 2, 2026 •

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Closes #435.

What changed

Each job of a needs closure now runs in its own sandbox container, from a fresh clone of the assigned commit, so state inside .git/, a process that starts its own session (setsid) and anything else that job leaves in its tree cannot reach the next job.

  • New host-side driver scripts/reviewer/run-review-jobs.mjs. It plans the named job's needs closure and, per job in dependency order, makes a fresh clone of the assigned commit from a read-only source the host provides, starts ONE container (OpenClaw's run model: read-only root, tmpfs, no network, caps dropped) with that job's clone, and no other host mount, bound writable at /workspace, runs the launcher in it for that one job, then removes the container — a removal that fails fails the build, before the next job starts — and discards the job's directory. The CLI takes no bind option. A job passes only on an ok:true, job-ok verdict that names it, from a launcher that exited 0; a job runs only if the jobs it needs succeeded (or its if: is always()), and the driver reports review-build-ok only when every job passed.
  • scripts/reviewer/reviewer-launch.mjs now runs the ONE job the host names, in the container it runs in. removeCreatedPaths and the cross-job "not fresh" refusal are retired; the clean-clone check stays (each job still verifies its own fresh clone).
  • New container-level checks scripts/reviewer/per-job-isolation-checks.sh (two jobs linked by needs: the first changes a tracked file, .git state and leaves a detached setsid process; the second checks the original tracked file, absent ref and staged entry, and no heartbeat growth over one second) and unit tests packages/cli/test/reviewer/run-review-jobs.test.ts. image-checks.sh, the lane docs and the changelog are updated; the checks run in the reviewer-image CI job.

Verification

Measured on 02e901cf (the round-6 head), against locally cached origin/main at 06eda65e04564b26b931f3b7957900edeac28115. Later commits change comments, the README and the PR body only.

  • bun run build exited 0 on both trees; the build script's initial CLI pass reported missing agent declarations before the agent and final CLI builds succeeded.
  • bun run lint:ci exited 0; node --check scripts/reviewer/run-review-jobs.mjs, bash -n scripts/reviewer/per-job-isolation-checks.sh, node scripts/changelog-fragments.mjs check and git diff --check passed.
  • TMPDIR=/private/tmp node scripts/test-suite.mjs blockers-verified ./packages/cli/test/reviewer/run-review-jobs.test.ts: 22 pass / 0 fail.
  • Whole socket-free comparison: all tracked test files except the socket exclusions below, through node scripts/test-suite.mjs, with Bun 1.3.10, Node 22.23.2 and TMPDIR=/private/tmp. Plugin runs set their mail/key paths inside the launcher's isolated test root.
Suite Fixed tree: pass / fail origin/main: pass / fail
agent 83 / 0 90 / 0
cli 1369 / 14 1362 / 14
pi-tps-mail 0 / 0 0 / 0
root-test 103 / 1 103 / 1
plugin 188 / 2 188 / 2
github-review 193 / 7 193 / 7
Total 1936 / 24 1936 / 24

Both trees also report 3 skips and 2 todos. No new failures: both have the same sandbox/git-wrapper, missing /bin/grep, nono-path and missing-OpenClaw failures. Plugin builds could not typecheck without OpenClaw; the emitted partial builds also make the plugin-launcher guard tests refuse.

The mail-plugin suite ran file by file through the same launcher on both trees after combined runs stalled; the baseline verify-strict.test.ts shard also stalled once and passed on retry.

Socket exclusions (whole files, including their non-socket cases):

  • packages/agent/test/: flair-context.test.ts, mail-promote-guard.test.ts.
  • packages/cli/test/: branch-join.test.ts, codex-presence-444.test.ts, flair-sync.test.ts, mail-bridge.test.ts, mail-producers-sign.test.ts (origin/main only), mail-promote.test.ts, mail-receipt-thread.test.ts, mail-remote.test.ts, mail-send-routes.test.ts, mail-send-stdin-reply.test.ts, mail-unresolvable-principal.test.ts, mail-watch.test.ts, mail.test.ts, mock-llm.test.ts, noise-ik-transport.test.ts, plain-tcp-transport.test.ts, runtime-mail-lifecycle.test.ts, service-proxy.test.ts, wire-mail.test.ts, ws-noise-transport.test.ts.
  • packages/cli/test/launch-attestation.test.ts and launch-attestation-real-nono.test.ts use Unix sockets; the real-nono fixture also needs a writable /var/tmp.
  • packages/pi-tps-mail/test/reply-send.test.ts uses the Flair HTTP stub.

Fail-first and mutation evidence (each mutation restored):

  • With the final tests and original runner, the tagged-head clone test and both buffer-code tests failed; both existing timeout tests also failed their new error-code assertions: 17 pass / 5 fail.
  • Remove only result.ok === true &&: 21 pass / 1 fail, the new exit-0 + ok:false + job-ok + right-job test.
  • Remove only execStatus === 0 &&: 21 pass / 1 fail, the nonzero-exit test.
  • Remove only result.status === "job-ok" &&: 21 pass / 1 fail, the wrong-status test.
  • Remove only && result.job === job.id: 21 pass / 1 fail, the wrong-job test.
  • Remove only --no-tags: 21 pass / 1 fail, the tagged-head clone test (the launcher reports tags).
  • Remove only the docker runner's errorCode: 20 pass / 2 fail, its timeout and buffer-code tests.
  • Remove only the git runner's errorCode: 20 pass / 2 fail, its timeout and buffer-code tests.
  • Treat every null exec status as a timeout: 21 pass / 1 fail, the buffer diagnostic test expects container-exec and ENOBUFS.

Docker checks were not run in this sandbox. Run outside it, from this tree:

set -euo pipefail
for id in $(node -e 'process.stdout.write(require("./docker/reviewer/runtime-matrix.json").images.map(i => i.id).join(" "))'); do
  tag="reviewer-image:${id}"
  node scripts/reviewer/build-reviewer-image.mjs "$id" --tag "$tag"
  bash scripts/reviewer/image-checks.sh "$tag" "$id" docker/reviewer/runtime-matrix.json
  bash scripts/reviewer/per-job-isolation-checks.sh "$tag" "$id"
done
id=$(node -e 'process.stdout.write(require("./docker/reviewer/runtime-matrix.json").images[0].id)')
bash scripts/reviewer/a9-red-proofs.sh "reviewer-image:${id}" "$id" docker/reviewer/runtime-matrix.json

Real-container checks on 02e901cf (a Linux host with the reviewer images): scripts/reviewer/per-job-isolation-checks.sh on reviewer-node22-bun1310 and reviewer-node24-bun1310: 8 checks, 0 failures each; no sandbox container left behind. image-checks.sh and a9-red-proofs.sh were not re-run for this round.

Note

The driver is host-side and needs a container runtime, which a unit lane may not have; its unit tests drive an injected docker runner, and the real container path is per-job-isolation-checks.sh, run in the reviewer-image CI job (which has Docker). Nothing in this PR changes the runtime planner/resolver, the image, or the github-review and tps-mail plugins.

@tps-anvil
tps-anvil requested a review from a team as a code owner October 2, 2026 08:06
@tps-anvil

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cli#435 sweep — every sentence this PR adds or changes

Each sentence checked against the code on 5aa168c (main 4982f78). ok = true.

scripts/reviewer/reviewer-launch.mjs

  1. Docblock: "Then it runs the ONE job the host names, in the container it runs
    in. One sandbox runs one job, and the host runs one sandbox per job of the
    needs closure, each with a fresh clone of the assigned commit
    (reviewer sandbox: a fresh isolated tree per needs job #435)." — ok: reviewBuild resolves plan.jobs to the single
    job assignment.job and runs only it; run-review-jobs.mjs runs one
    container per closure job, each from a fresh clone.
  2. "It gives the job a fresh HOME/TMPDIR/cache root, refuses a worktree whose
    effective git configuration leaves the safe baseline or whose repository
    holds hooks, and refuses unless the worktree passes the clean-clone check" —
    ok: prepareHermeticRoot, inspectGit, checkFresh run once, before the job.
  3. "It reports job-ok only when every step exited 0." — ok: the success result
    carries status: "job-ok" and is reached only after runSteps reports ok.
  4. "Exit 0 = job-ok, 1 = refused or failed, 2 = usage." — ok: emit.
  5. checkFreshClone docblock: "Each job gets its own clone, so nothing an
    earlier job did is visible here." — ok: the driver gives every job its own
    clone; the launcher no longer carries a cross-job pin.
  6. reviewBuild comment: "The host runs one sandbox per job and names the job
    this sandbox runs (REVIEWER_CI_JOB), so the build runs exactly that one job
    here." — ok.

scripts/reviewer/run-review-jobs.mjs (new)

  1. Docblock: "review-build-ok is ADVISORY EVIDENCE for the reviewer, not a merge
    gate: CI stays the gate." — ok (same statement the launcher/README carry).
  2. "one sandbox container per job, so that state inside .git/, a process that
    starts its own session (setsid), and any other host-level carry-over cannot
    reach the next job" — ok: each job runs in its own container (own PID
    namespace) from its own clone; per-job-isolation-checks.sh exercises it.
  3. "makes a FRESH clone of the assigned commit from the read-only source the
    host provides (a bare clone, or a checkout; never written to)" — ok: the
    driver git clones from the source and never writes it.
  4. "starts ONE sandbox container with the job's clone bound (writable) at
    /workspace, in OpenClaw's run model (read-only root, tmpfs on /tmp, /var/tmp
    and /run, no network, all caps dropped, no-new-privileges)" — ok:
    containerArgs.
  5. "removes the container and DISCARDS the job's directory" — ok: finally.
  6. "A job runs only if the jobs it needs succeeded (or its if: is
    always()), and it reports review-build-ok only when every job ran and
    every step exited 0." — ok: the loop's needs gate; failure/notOk.
  7. "The assignment the launcher reads from its container init's environment is
    set here, in the container's create-time env file, never in the launcher's
    caller." — ok: the --env-file for docker create.
  8. --bind <host>:<container>[:ro] in USAGE — ok: parseArgs + containerArgs
    append it as -v <value>.

scripts/reviewer/per-job-isolation-checks.sh (new)

  1. Header + pass/fail strings — ok: the script builds the two-job fixture,
    runs the driver, and asserts job 2's tree is pristine, job 1's ref and index
    are absent, the setsid heartbeat stopped, no container is left, and every
    job directory is discarded. Each assertion reads the recorded evidence.

scripts/reviewer/image-checks.sh

  1. "an in-matrix pin runs the host-named job to job-ok and writes the marker;
    skipped actions are named" — ok: grep '"status":"job-ok"'.

scripts/reviewer/ci-job.mjs

  1. "The plan feeds the review build, run one sandbox container per job by
    scripts/reviewer/run-review-jobs.mjs; its verdict (review-build-ok) is
    advisory evidence for the reviewer, not a merge gate (CI stays the gate)." —
    ok.

docker/reviewer/README.md

  1. Launcher bullet (per-job wording) — ok, per 1–4.
  2. New run-review-jobs.mjs bullet and the per-job-isolation-checks.sh
    sentence — ok, per 7–15.
  3. Clean-clone section: "a commit is checked out" (the cross-job clause is
    gone) and "each job runs in its own container, from its own fresh clone of
    the assigned commit (see the host driver above), so nothing an earlier job
    did reaches it." — ok, per 8–9.
  4. Known limits: "Each job of a needs closure runs in its own container, from
    its own fresh clone of the assigned commit, so no state carries over between
    jobs. A job that installs its dependencies does so into its own tree, from
    its own cold caches." — ok: each job is its own clone/container/caches; a
    job's own install step writes its own tree.
  5. "The host driver makes a fresh clone of the assigned head for each job" — ok.

.github/workflows/test.yml

  1. The cli#435 step comment and Per-job isolation checks (cli#435) step — ok:
    it invokes the script named in 15 for the first matrix image.

.changelog/unreleased/fixed-435-per-job-fresh-tree.md

  1. Lede + body — ok, per 1–15.

Tests

  1. run-review-jobs.test.ts names/assertions — ok: one container per job, deps
    first, distinct clones, per-job REVIEWER_CI_JOB, container removed, dir
    discarded, needs-skip, always(), refusal propagation, bad input.
  2. reviewer-launch.test.ts — the closure, pinDrift and removeCreatedPaths
    tests are removed with the code they tested; the single-job and clean-clone
    tests remain and the success status is job-ok — ok.

Deliberately not done

  • The driver is host-side and needs a container runtime; its unit tests inject a
    fake docker runner and the real container path is per-job-isolation-checks.sh
    (run in the reviewer-image CI job, which has Docker).
  • No change to the runtime planner/resolver, the image, or the github-review and
    tps-mail plugins.

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📥 Commits

Reviewing files that changed from the base of the PR and between 4982f78 and 7e4d4fc.

📒 Files selected for processing (13)
  • .changelog/unreleased/fixed-435-per-job-captured-stderr.md
  • .changelog/unreleased/fixed-435-per-job-fresh-tree.md
  • .changelog/unreleased/fixed-435-per-job-isolation-check.md
  • .changelog/unreleased/fixed-435-per-job-isolation-clone.md
  • .github/workflows/test.yml
  • docker/reviewer/README.md
  • packages/cli/test/reviewer/reviewer-launch.test.ts
  • packages/cli/test/reviewer/run-review-jobs.test.ts
  • scripts/reviewer/ci-job.mjs
  • scripts/reviewer/image-checks.sh
  • scripts/reviewer/per-job-isolation-checks.sh
  • scripts/reviewer/reviewer-launch.mjs
  • scripts/reviewer/run-review-jobs.mjs
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@tps-anvil

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Round 2 — the per-job isolation check ran without the driver's dependencies

Root cause. scripts/reviewer/run-review-jobs.mjs imports ci-job.mjs, which does import … from "js-yaml". The reviewer-image CI job installs no dependencies (checkout + image build + bash checks only), so that import threw ERR_MODULE_NOT_FOUND before the driver ran a single job. The check reported only the last three lines of the driver's stderr (tail -n 3) — the trailing } of the stack and the Node version — so the cause was invisible in CI.

Fix (measured on 358e22d, main 4982f78). scripts/reviewer/per-job-isolation-checks.sh now runs the driver from a copy of the reviewer modules with the image's pinned js-yaml extracted alongside it (docker run --rm "$IMG" tar … -C /opt/reviewer/lib node_modules/js-yaml), so the check needs no dependencies from the checkout. On a driver failure it prints the driver's whole stdout and stderr.

Reproduced by renaming the worktree's node_modules away (the CI condition). Before the fix:

FAIL  driver run: rc=1 out= err=}
Node.js v22.22.1

The driver's full stderr is Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'js-yaml' imported from …/scripts/reviewer/ci-job.mjs. After the fix the same run passes 8/8.

Evidence

image build: node scripts/reviewer/build-reviewer-image.mjs reviewer-node22-bun1310 --tag …  → exit 0

per-job-isolation-checks.sh with node_modules renamed away (exactly as CI invokes it):
  PASS  the driver runs the needs closure one container per job to review-build-ok
  PASS  job 2 sees no modified, untracked or ignored path (git status is clean)
  PASS  job 2 sees the original tracked file, not job 1's change
  PASS  job 2's .git has none of job 1's refs
  PASS  job 2's index has nothing staged
  PASS  job 1's detached (setsid) process wrote until job 1 ended, then stopped
  PASS  no sandbox container is left behind
  PASS  every job's directory is discarded
  == 8 checks, 0 failures ==   [exit 0]

whole suite (bun run test, HOME-isolated), 358e22d vs 4982f78:
  agent        102 pass / 0 fail (12 files)          both
  cli          1637 pass / 3 skip / 0 fail (138 files)  vs  1638 pass / 3 skip / 0 fail (137 files)
  pi-tps-mail   12 pass / 3 skip / 0 fail (4 files)     both
  root-test    104 pass / 2 todo / 0 fail (4 files)     both
  plugin openclaw-tps-mail    203 pass / 0 fail (12 files)
  plugin openclaw-github-review 200 pass / 0 fail (12 files)
  cli#411 guard: 182/182 test files shown executed, exit 0

The cli delta (+1 file, −1 pass) is the round-1 #435 test change (launcher tests retired, driver tests added); this round changes no test. The github-review lane needs node ≥ 22.22.3 (CI runs it under 24.21.0); under this host's 22.22.1 three gateway-boundary cases fail on a node-engines check, so it was measured under 24.21.0 in an isolated HOME.

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cli#463 round 2 — sweep of every sentence this round adds or changes

Diff base: 5aa168c (the PR's round-1 commit). Every sentence below is checked
against the code on this round's commit.

scripts/reviewer/per-job-isolation-checks.sh

  1. Header (added): "The driver's workflow parser (js-yaml) is taken from the
    image, not the checkout, so this check needs no node_modules in the
    repository." — ok: the check extracts /opt/reviewer/lib/node_modules/js-yaml
    from the built image (docker run --rm "$IMG" tar …) and never reads the
    checkout's node_modules. Proven: the check passes 8/8 with the repo's
    node_modules renamed away (the CI condition).
  2. Run comment (added): "The driver imports js-yaml, the workflow parser." — ok:
    scripts/reviewer/ci-job.mjs has import { CORE_SCHEMA, load } from "js-yaml",
    and run-review-jobs.mjs imports ./ci-job.mjs.
  3. "A checkout need not have its dependencies installed (the reviewer-image CI
    job installs none)" — ok: .github/workflows/test.yml's reviewer-image job
    has no bun install/npm ci step (checkout, build+check, A9 red proofs,
    per-job step, upload).
  4. "so run the driver from a copy of the reviewer modules with the image's pinned
    js-yaml alongside it; the check then needs no dependencies from the checkout."
    — ok: cp "$REPO"/scripts/reviewer/*.mjs "$HOSTMOD/scripts/reviewer/" and the
    image's js-yaml extracted to $HOSTMOD/node_modules; the driver is run from
    $HOSTMOD. (The driver's REPO export is unused at runtime; the reviewer
    modules have no home-path or import.meta.url side effects at load.)
  5. Failure branch: "driver run: rc=${RUN_RC}" plus whole stdout/stderr echoed —
    ok: it prints $SCRATCH/run.out and $SCRATCH/run.err in full (demonstrated:
    an ERR_MODULE_NOT_FOUND stack prints whole, where the old line showed only
    its last three lines).

.changelog/unreleased/fixed-435-per-job-isolation-check.md (new)

  1. Lede: "The per-job isolation check takes its driver's workflow parser
    (js-yaml) from the reviewer image, so it runs without the checkout's installed
    dependencies (Refs reviewer sandbox: a fresh isolated tree per needs job #435)." — ok: 24 words, no internal sentence break; claims
    match 1 and 4.
  2. "The reviewer-image CI job installs no dependencies;" — ok: see 3.
  3. "the check runs the driver from a copy of the reviewer modules with the image's
    pinned parser alongside it." — ok: see 4.
  4. "On a driver failure it prints the driver's whole stdout and stderr." — ok:
    see 5.

The rest of the PR

  • The round-1 sentences (feature, driver, launcher, docs, tests) are unchanged by
    this round.
  • This round changes no test file and no .ts/.mjs source, so no test-name or
    operator-string claims change.

Not claimed

  • No claim that the host driver, run directly (not through this check), works
    without installed dependencies: the driver still imports js-yaml at load. This
    round makes the check self-contained; a host running the driver itself must
    still have the repository's dependencies.

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Round 3 — the per-job isolation check, root cause and fix

Root cause. The driver ran each job's container as the image's reviewer user (uid 1000), but the clone it binds at /workspace is created by whoever runs the driver. On the CI runner that is uid 1001, so inside the sandbox the clone belonged to another user:

  • echo changed > tracked.txt → Permission denied (the file is owned by the runner, mode rw-rw-r--), exit 1;
  • git update-ref refs/heads/job1-marker HEAD and git add staged.txt → fatal: detected dubious ownership in repository at '/workspace', exit 128.

The first failing line ended step 3 with exit 1, and the driver reported it honestly as job build: step 3 (change the tree, .git and leave a detached process) exited 1, with review skipped for a failed need. On the reviewer host the driver runs as uid 1000, the image's own user, so the mismatch never appears there — which is why it was green locally.

Fix (bff27f3):

  • scripts/reviewer/run-review-jobs.mjs runs each job's container as the user it cloned as (--user <uid>:<gid>), so the sandbox owns its clone: git accepts the worktree, the job can write it, and the driver can discard it afterwards.
  • The fixture's job-1 step 3 names the sub-command that failed (fail "...") guards), and the driver now carries the launcher's output (bounded tail) in the refusal and prints it, so a job's failure log names the step. Verified with a forced failure — the log showed step 3 FAILED: ….
  • .changelog/unreleased/fixed-435-per-job-isolation-clone.md.

Job 1 still changes the tracked file, adds the ref and stages the file and leaves the detached (setsid) process; job 2 still asserts a clean status, the original tracked file, no job-1 ref, an empty index, and a stopped heartbeat.

Passing end-to-end output (bash scripts/reviewer/per-job-isolation-checks.sh "reviewer-image:reviewer-node22-bun1310" reviewer-node22-bun1310, run as uid 1001 to reproduce the CI user)

== per-job isolation checks: reviewer-image:reviewer-node22-bun1310 (id reviewer-node22-bun1310; node 22.22.1, bun 1.3.10) ==
PASS  the driver runs the needs closure one container per job to review-build-ok
PASS  job 2 sees no modified, untracked or ignored path (git status is clean)
PASS  job 2 sees the original tracked file, not job 1's change
PASS  job 2's .git has none of job 1's refs
PASS  job 2's index has nothing staged
PASS  job 1's detached (setsid) process wrote until job 1 ended, then stopped: not alive in job 2 (heartbeat 30 bytes, unchanged)
PASS  no sandbox container is left behind
PASS  every job's directory is discarded
== 8 checks, 0 failures ==

Verification (measured on bff27f3; baseline 358e22d and 4982f78)

  • Image: built per docker/reviewer and the runtime-matrix id (node scripts/reviewer/build-reviewer-image.mjs reviewer-node22-bun1310), exit 0; the check above runs against it.
  • bun install --frozen-lockfile exit 0; node_modules/typescript 5.9.3 = typescript@5.9.3 in bun.lock; bun run build exit 0.
  • Full suite (bun run test, isolated HOME), bff27f3 vs 358e22d vs 4982f78:
    • agent: 102 / 0 (12 files) — all three.
    • cli: bff27f3 1639 pass / 3 skip / 0 fail (1642 tests, 138 files); 358e22d 1637 pass / 3 skip / 0 fail (1640 tests, 138 files); 4982f78 1638 pass / 3 skip / 0 fail (1641 tests, 137 files). This round adds two tests in the driver's file, no file.
    • pi-tps-mail: 12 pass / 3 skip / 0 fail — all three.
    • root-test: 104 pass / 2 todo / 0 fail (106 tests) — all three.
  • node scripts/changelog-fragments.mjs check: 15 fragments, OK.

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cli#463 round 3 — sweep of every sentence this round adds or changes

Diff: 358e22d (round 2)..HEAD (rounds 1–2 were swept in their own rounds).
Each sentence is checked against the code on this round's commit.

scripts/reviewer/run-review-jobs.mjs

  1. "The job's clone belongs to whoever runs this driver; run the sandbox as that
    user." — ok: runOneJob clones as the driver's own user (git clone →
    files owned by the driver's uid), and now passes user: currentUser() to
    containerArgs, which adds --user <uid>:<gid> (currentUser() =
    process.getuid():process.getgid()).
  2. "Best effort: the sandbox runs as this user, so it can write the bind;
    widen the permissions anyway." — ok: the container's uid now equals the clone
    owner's (1), so the owner can write it; the chmod widens the modes on top.
    (The two earlier problems this round found are gone: git accepts the worktree
    and the driver can discard it. Verified: the check passes with the driver run
    as uid 1001 — not the image's reviewer (1000) — 8/8.)
  3. "A job's captured launcher output, bounded to its tail before it is
    reported." — ok: tailOutput returns the last 8192 characters; refuse
    attaches it only when non-empty.
  4. New field: a failure's refusal now carries output (the launcher's stderr
    tail). — ok: set from exec.stderr in runOneJob; included in the refusal
    returned by runReviewJobs; printed to stderr by main().

scripts/reviewer/per-job-isolation-checks.sh

  1. fail() { echo "step 3 FAILED: $1" >&2; exit 1; } and the || fail "..."
    guards on each sub-command — ok: each guard names the exact command it
    guards; on failure the message reaches the driver's output (verified with a
    forced failure: the log showed step 3 FAILED: forced failure for the diagnostic).
  2. No sentence of the fixture's behaviour changed: job 1 still changes
    tracked.txt, adds the ref refs/heads/job1-marker, stages staged.txt, and
    leaves the detached setsid heartbeat; job 2 still asserts a clean status,
    the original tracked file, no job-1 ref, an empty index, and a stopped
    heartbeat. The only addition is the fail helper and the || guards.

packages/cli/test/reviewer/run-review-jobs.test.ts

  1. "a job's sandbox runs as the user that owns its clone" — asserts
    --user is "1000:1000" when given, and absent by default.
  2. "a failed job carries the launcher's output (the step that failed) in its
    refusal" — asserts refusal.kind === "stage-failed" and
    refusal.output === the launcher's stderr.

.changelog/unreleased/fixed-435-per-job-isolation-clone.md

  1. Lede: "The review build runs each job's sandbox as the user that owns its
    fresh clone (Refs reviewer sandbox: a fresh isolated tree per needs job #435)." — 17 words, one sentence; ok per 1–2.
  2. "The host driver runs the container as the user it cloned as, so the job can
    write the clone and the driver can discard it afterwards" — ok per 1–2.
  3. "on a failure the driver forwards the sandbox's output, so the failing
    step's own messages reach the log." — ok per 4.

Not claimed

  • No claim that the sandbox's user is the image's reviewer user: --user
    overrides it; on the reviewer host (driver uid 1000 = the image's user) the
    value is the same, and in CI (driver uid 1001) it is the CI user.
  • No claim that a general step prints a diagnostic: only this fixture's job-1
    step 3 was given fail guards; the driver forwards whatever a step prints.
  • Rounds 1–2 prose (the js-yaml from-the-image fix, the one-sandbox-per-job
    feature) is unchanged by this round and was swept in its own round.

…job passes only on job-ok (#435)

The driver's isolation boundary was overbroad in three ways:

- its CLI took unrestricted --bind values and attached each to every job, so a
  caller could share a writable host path between jobs. The CLI now takes no
  bind option; a container gets the job's own clone and no other host mount.
  The isolation check adds the one bind it needs (the shared evidence
  directory) through the driver's injected docker runner, so the driver it
  exercises is the production one.
- a job could be reported as a success when `docker exec` exited non-zero: the
  driver parsed a JSON line but never required exit 0 or a job-ok verdict for
  the assigned job. A job now passes only on ok:true, status "job-ok", that
  job's own name and exit 0.
- a failed `docker rm -f` was ignored, and the isolation check read a failed
  `docker ps` as an empty list. A container that cannot be removed now fails
  the build before the next job starts, and the check tests ps's status first.

Narrows the sentences that claimed more than the driver enforces, and the
check's job-2 status and heartbeat pass messages to what they observe.
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Sweep — this round's added/changed sentences (git diff bff27f3...02ab91c, plus the changelog fragments, docker/reviewer/README.md, the PR body, test names and the check's own messages), each checked against the code for (a) outcomes/status codes on every branch, (b) scope words, (c) coverage claims.

scripts/reviewer/run-review-jobs.mjs

  1. "one sandbox container per job, each from its own fresh clone, so state inside .git/, a process that starts its own session (setsid), and anything else a job leaves in its tree cannot reach the next job. The driver attaches no host mount beyond that job's own clone." — FIXED (was "any other host-level carry-over"). (b) the claim is now limited to what the driver isolates: separate containers, a separate clone per job, and no other mount. (a)/(c) containerArgs emits exactly one -v (the clone); the CLI rejects every other bind — asserted by "the CLI refuses any extra host bind" and the containerArgs test.
  2. "removes the container, refusing the build if that removal fails, and DISCARDS the job's directory." — (a) the finally runs docker rm -f; a non-zero status sets container-remove with stop: true and the loop breaks. (c) "a container that cannot be removed fails the run before the next job starts" asserts the kind and that the dependent job never runs. PASS.
  3. "…reports review-build-ok only when every job ran to a job-ok verdict that names that job and its launcher exited 0, and every step exited 0." — (a) the pass condition is execStatus === 0 && result.ok === true && result.status === "job-ok" && result.job === job.id. (c) "a launcher that exits non-zero carrying ok:true is not a pass" and "a job-ok verdict that names another job is not a pass". PASS.
  4. "The default docker runner: one argv, a hard timeout, stdout and stderr captured (up to 16 MiB each)." — (c) maxBuffer: 16 * 1024 * 1024 in spawnSync. PASS.
  5. "docker create args for one job's sandbox, in OpenClaw's run model: the job's own clone at /workspace and NO other host mount." — PASS (item 1).
  6. "A container that could not be removed leaves the host dirty: stop the build before the next job starts, whatever the job's own verdict was." — (a) removeFailure is returned before the verdict is examined, so it wins over the job's own refusal. PASS (item 2).
  7. "A job passes only on a job-ok verdict that names THIS job and a launcher that exited 0: a crash after printing ok:true, another job's verdict, or a non-zero exit carrying ok:true is not a pass." — (a) matches the condition; the three named cases are the two new tests. PASS.

scripts/reviewer/per-job-isolation-checks.sh

  1. Header: "The driver attaches no host mount beyond each job's clone, so the fixture adds that one bind through the driver's injected docker runner (see the harness below). The shared evidence directory is the fixture's own." — (a) the harness adds -v <evidence>:/evidence only to create, and calls the checkout's own driver module; the driver itself takes no bind. PASS (the end-to-end run passes on both images).
  2. Harness comment and code ("test-only evidence channel … the driver it exercises is the production one, unchanged"). — PASS (item 8).
  3. Job 2's observation is now git status --porcelain=v1 --ignored, with its pass message "job 2 sees no modified, untracked or ignored path (git status is clean)". — FIXED: the observation now covers ignored paths, so the message says no more than is measured. PASS.
  4. "job 1's detached (setsid) process wrote into the shared evidence directory and is not writing while job 2 observes it (heartbeat N bytes, unchanged over 1 s)" — FIXED (was "wrote until job 1 ended, then stopped"): the check reads a non-zero size and the same size 1 s later; it cannot establish when the process stopped (it could have stopped earlier). PASS.
  5. "docker ps failed, so the fixture cannot tell whether a sandbox container is left behind" — (a) emitted only when docker ps exits non-zero. PASS — demonstrated with a stub docker that exits 1: the new form FAILs, the form it replaced printed PASS.

Changelog fragments

  1. fixed-435-per-job-fresh-tree.md: "…and it attaches no host mount beyond that job's own clone, so a change inside .git/, a process that starts its own session, and anything else the job leaves in its tree cannot reach the next job." — FIXED (was "every other host-level carry-over cannot reach the next job"). PASS (items 1, 2).
  2. fixed-435-per-job-isolation-clone.md: "on a launcher refusal or a failed job the driver forwards the tail of the sandbox's output" — (a) refuse() attaches the output on the launcher-unreadable and failed-job paths, bounded to 8192 chars; it is not attached on clone/create/start failures and there is none on the timeout path. PASS.

docker/reviewer/README.md

  1. Driver paragraph: "…starts one container with that job's clone bound writable at /workspace and no other host mount (OpenClaw's run model), runs the launcher in it for that one job, then removes the container — refusing the build if the removal fails — and discards the job's directory… reports review-build-ok only if every job ran to a job-ok verdict that names it and every step exited 0." — PASS (items 1–3).
  2. "so nothing an earlier job did in its tree reaches it." — FIXED (was "nothing an earlier job did reaches it"). PASS.
  3. "so the worktree state does not carry over between jobs." — FIXED (was "no state carries over between jobs"). PASS.

Test names — packages/cli/test/reviewer/run-review-jobs.test.ts

  1. "a launcher that exits non-zero carrying ok:true is not a pass" — asserts kind job-failed, the message "did not report job-ok (exit 1)", and the forwarded output. PASS.
  2. "a job-ok verdict that names another job is not a pass" — asserts the refusal and that only one container is created. PASS.
  3. "a container that cannot be removed fails the run before the next job starts" — asserts kind container-remove and that the dependent job never runs (1 create, 1 exec). PASS.
  4. "the CLI refuses any extra host bind" — spawns the driver with --bind; asserts exit 2 and "unknown argument --bind". PASS.
  5. "Exactly one host mount: the job's own clone. No other host path is shared." — asserts one -v and that its value is the job's clone. PASS.

PR body

  1. The changed claims are items 1–3 and 10–11. Every count names the commit it was measured on (02ab91c, main 4982f78); the items that were not re-measured this round (the plugin suites, the cli#411 coverage guard, the earlier fixture run) are labelled historical.

Found but deliberately not changed (the verdict lists these as follow-ups)

  • docker/reviewer/Dockerfile:117: "The only persistent writable bind is the review worktree at /workspace." The verdict calls this unchanged line a follow-up; with the driver's --bind option removed the line is true again, so it was left untouched.
  • The check's cleanup still removes every container with the shared tps.reviewer.job label, so parallel runs can remove one another's containers (verdict: follow-up).

…r captured (#435)

dockerRunner and gitRunner returned the error string as stderr when a spawn
timed out or failed, dropping what the process had already written; both now
append the error to the stderr they captured, so a timed-out sandbox exec still
reaches the refusal's output with the job's own messages.

The verdict control was untested condition by condition: the exit-non-zero test
wrote a bare {"ok":true} verdict, already not job-ok, and no test exited 0 with
the right job and another status. That test now carries a complete job-ok
verdict for the job that runs, and a new test exits 0 with a self-check-ok
verdict, so removing either condition alone turns a test red.
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cli#463 round 5 — sweep of every sentence this round adds or changes

Diff: 02ab91c..d3e5c16, plus the new changelog fragment and the two sentences
the adjudication names (run-review-jobs.mjs:50 and the clone fragment) and the
PR-body item. Each sentence is checked against the code on d3e5c16 (main
4982f78); where a sentence is a claim about the tests, the mutation I ran is
the coverage. ok = true on every branch.

scripts/reviewer/run-review-jobs.mjs

  1. dockerRunner's error return (stderr: ${r.stderr ?? ""}${r.error.code ?? "error"}: ${r.error.message}``) — on a spawn error the stderr captured before the error is kept and the error appended. Measured: mutation M3D (this line alone reverted) → "a timed-out docker runner keeps the stderr it captured and appends the error" fails; the line is restored and sha256sum -c verifies the file. ok.
  2. gitRunner's error return — the same claim for /usr/bin/git. Mutation M3G (this line alone reverted) → "a timed-out git runner keeps the stderr it captured and appends the error" fails. ok.
  3. The :50 comment ("The default docker runner: one argv, a hard timeout, stdout and stderr captured (up to 16 MiB each).") — false before this change on a timeout (the capture was thrown away) and true now: both paths return the captured stdout and stderr (with the error appended on the error path). This is option (a) of the adjudication, so the text stands unchanged. ok.
  4. The :168-170 comment ("A job passes only on a job-ok verdict that names THIS job and a launcher that exited 0: a crash after printing ok:true, another job's verdict, or a non-zero exit carrying ok:true is not a pass.") — true, and now each condition is held by a test on its own: M1 (execStatus === 0 && removed alone) → "a launcher that exits non-zero carrying ok:true is not a pass" fails; M2 (result.status === "job-ok" && removed alone) → "a launcher that exits 0 with a verdict that is not job-ok is not a pass" fails. ok.

.changelog/unreleased/fixed-435-per-job-isolation-clone.md (sentence the adjudication names)

  1. "on a launcher refusal or a failed job the driver forwards the tail of the sandbox's output, so the failing step's own messages reach the log" — true now on the timeout path too: the refusal carries tail(exec.stderr), which is the sandbox's own output plus the appended error (items 1–3); the timed-out-exec test asserts the refusal's output. Scope note: the driver's refusals that happen before a sandbox exists (clone-failed, container-create, container-start, container-remove) carry their own message, built from the first line of the relevant stderr, and forward no output; the sentence's subject is the launcher path, where a sandbox ran. No text change — (a), not (b). ok.

.changelog/unreleased/fixed-435-per-job-captured-stderr.md (new)

  1. "A timed-out sandbox keeps the output it captured (Refs reviewer sandbox: a fresh isolated tree per needs job #435)." — items 1–3; the job's container exec that times out no longer loses what it wrote. ok.
  2. "The driver's docker and git runners append the spawn error to the stderr they captured, so a job that times out still reaches the refusal's output with its own messages." — items 1–3 and the timed-out-exec test (the refusal's output is exactly the captured text). ok.

Tests (packages/cli/test/reviewer/run-review-jobs.test.ts)

  1. "a launcher that exits non-zero carrying ok:true is not a pass" (changed body) — the launcher now carries {ok:true, status:"job-ok", job:"build", jobs:[…]} with exit 1, so the exit status is the only condition left; the assertion names the job, which is what makes M1 observable. ok.
  2. the changed assertion toContain("job build: the launcher did not report job-ok (exit 1)") — the refusal's message is built as job ${job.id}: the launcher did not report job-ok (exit ${execStatus}) with job.id = build and execStatus = 1, and the verdict object carries no kind/message to override it. ok.
  3. "a launcher that exits 0 with a verdict that is not job-ok is not a pass" — exit 0, ok:true, the right job, status self-check-ok; the refusal names build with (exit 0). M2 makes the build job pass and the refusal come from review, so the assertion fails. ok.
  4. "a timed-out exec's captured stderr reaches the refusal's output" — a status: null exec is the driver's container-timeout path, and output is what the runner returned; mutation M4 (output = "") fails it. ok.
  5. "a timed-out docker runner keeps the stderr it captured and appends the error" / "a timed-out git runner keeps the stderr it captured and appends the error" — real runners: a shim docker that writes to stderr and blocks, and a git alias that does the same; each asserts status === null, the captured text and ETIMEDOUT. M3D/M3G fail them respectively. ok.
  6. Test comments: "A child process with a shim docker first on its PATH: the runner's hard timeout kills the shim, which has already written to stderr." (the shim is the only docker on the child's PATH; the timeout SIGTERMs it) and "A git alias that writes to stderr and then blocks: the runner's timeout kills it, so the capture and the timeout error both exist." (git runs a ! alias through sh; exec sleep 30 replaces it, so the SIGTERM kills it and leaves no process behind). ok.

The PR-body item (for Flint to apply)

  1. The two added mutation bullets claim only what the runs show: dropping execStatus === 0 && alone fails the exit-non-zero test, and dropping result.status === "job-ok" && alone fails the exit-0 self-check-ok test. ok.

Not changed (found, deliberate)

  • docker/reviewer/README.md:68-69: "it reports review-build-ok only if every job ran to a job-ok verdict that names it and every step exited 0" — read as necessary conditions it is true (the launcher's job-ok implies every step exited 0; the launcher's exit 0 is also required, and the driver's own docblock names it). The adjudication did not name this sentence; adding to it would be new prose.
  • The test-file header ("Docker is not available in every lane, so the driver takes an injected docker runner") — still true: the new runner test uses a shim, never a real Docker.
  • run-review-jobs.mjs's docblock ("only when every job ran to a job-ok verdict that names that job and its launcher exited 0, and every step exited 0") — true, unchanged.

tps-flint and others added 3 commits October 2, 2026 05:48
…; only ETIMEDOUT is a container timeout; fragments say only what the runners do (#435 review)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
… executed run: steps (#435 review)

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

Note: CodeRabbit is an incremental review system and does not re-review already reviewed commits. This command is applicable only when automatic reviews are paused.

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APPROVE — head 7e4d4fca. Repo visibility checked: tpsdev-ai/cli is PUBLIC (repos/tpsdev-ai/cli → .visibility = public).

Evidence: worktree at head; bun install --frozen-lockfile && bun run build → exit 0 (0 TS errors on the settled pass). TMPDIR=/private/tmp node scripts/test-suite.mjs sherlock-463 packages/cli/test/reviewer/run-review-jobs.test.ts packages/cli/test/reviewer/reviewer-launch.test.ts → 83 pass / 0 fail (446 expects). Mutation: deleting --network none, --cap-drop ALL and --security-opt no-new-privileges from containerArgs fails the flags test.

Properties in scope:

Job→job isolation (tracked-file edit, .git state, detached process). Each job gets its own join(scratch, job.id) (run-review-jobs.mjs:111), rmSync'd then freshly cloned from the read-only source (cloneArgs, line 66: file://${source}, --depth 1 --no-tags), its own container, and dir + envFile are rmSync'd in the finally (line 164). The container is removed before the next job starts and a removal failure stops the build (if (removeFailure) return { ok: false, stop: true, ... }). So job 2 clones the same source independently: nothing job 1 wrote in its tree, its .git state, or a setsid process it left survives into job 2. Covered by run-review-jobs.test.ts and the Docker-gated per-job-isolation-checks.sh (I could not run the latter — no Docker in this sandbox).

Container hardening (flags verified). containerArgs (line 73):

"create", "--init", "--read-only",
"--tmpfs", "/tmp", "--tmpfs", "/var/tmp", "--tmpfs", "/run",
"--network", "none", "--cap-drop", "ALL",
"--security-opt", "no-new-privileges",
...(user ? ["--user", user] : []),
"--workdir", "/workspace", "-v", `${dir}:/workspace`,
"--env-file", envFile, "--label", `${LABEL}=${jobId}`, image, "sleep", "infinity",

i.e. read-only root + tmpfs scratch, no network, all caps dropped, no-new-privileges, non-root --user (the clone's owner). The test pins read-only / --network none / --cap-drop ALL / no-new-privileges / --workdir / --env-file / exactly one /workspace mount.

Host source not writable from inside; no credential reaches the container. Only dir — the job's own clone under scratch — is bound, writable, at /workspace (the test asserts the single /workspace mount). The source is read on the HOST (git -C sourceReal show HEAD:<workflow>, then git clone file://${source}) and is never mounted; the clone's own remote.origin.url is a file:// host path that does not exist inside the container, and --network none closes the other route — so the container can neither read nor write the source. Credentials: docker create inherits no host environment and mounts no host path but the clone; the only environment is the 3-key --env-file (REVIEWER_CI_WORKFLOW|_JOB|_BASE, written 0600) plus the image's baked ENV. The file:// clone (rather than a --local hardlink clone) also means the job's git operations cannot corrupt the source's object store through hardlinked objects — a deliberate and correct choice.

Findings (all non-blocking):

[F1] scripts/reviewer/run-review-jobs.mjs:111-112 — defense-in-depth. runOneJob uses job.id directly as a path component — const dir = join(scratch, job.id); rmSync(dir, { recursive: true, force: true }); — and as the env-file name (line 128) and the --label value, with no JOB_ID_RE (scripts/reviewer/ci-job.mjs:67) assertion. planJob validates job ids only inside needs (ci-job.mjs:566); it does not validate the job-id key format. The launcher does assert JOB_ID_RE on the assignment (scripts/reviewer/reviewer-launch.mjs:316), but that runs INSIDE the container, after the driver has already rmSync'd the path. It is not reachable in the documented wiring — the entry job is --job/REVIEWER_CI_JOB (host config), and every other id in the closure arrives through the validated needs — but a probe confirms the gap: planJob ACCEPTS an entry id "a/b" when the workflow defines a matching doc.jobs key (a needs: ["../evil"] entry is correctly refused). Recommend asserting JOB_ID_RE on job.id before any filesystem call, so a future caller passing an unvalidated name cannot rm -rf an arbitrary host path.

[F2] scripts/reviewer/run-review-jobs.mjs:73 — hardening. No resource limits are set: there is no --pids-limit, --memory or --cpus, and the writable bind is unquota'd. --cap-drop ALL + no-new-privileges constrain privilege, not resource use, so untrusted workflow code running as the job can fork-bomb or fill host memory/disk. Optional for a first cut, but a --pids-limit/--memory bound would round it out.

[F3] packages/cli/test/reviewer/run-review-jobs.test.ts:144 — test gap. The containerArgs test pins --read-only, --network none, --cap-drop ALL, no-new-privileges, --workdir, --env-file and the single mount, but not --init or the --tmpfs /tmp|/var/tmp|/run mounts. A regression that drops a tmpfs mount would leave a read-only root with no writable /tmp, caught only by the Docker-gated per-job-isolation-checks.sh — which unit lanes do not run.

Could not see: the Docker-only checks (per-job-isolation-checks.sh, image-checks.sh, a9-red-proofs.sh); Docker is unavailable in this sandbox, so the real container path is unverified here. No CI-lane claim is made.

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Verdict: APPROVE. Repo visibility checked via the API before writing this: tpsdev-ai/cli is public; every observation below is structural and readable in the diff, so full detail is posted here.

Reviewed on head 7e4d4fc in my own worktree. All runs are my own, not CI claims. I did not execute any container on this host — the real-docker path is exercised by the CI lane (per-job-isolation-checks.sh, which I reviewed line-by-line) and by the injected-runner tests; per review policy I ran the planning, gating, verdict-binding, and hardening surfaces with the fake docker + real git sources.

What I ran

  • bun install --frozen-lockfile && bun run build: clean at head.
  • test/reviewer/run-review-jobs.test.ts + test/reviewer/reviewer-launch.test.ts through the isolated test-suite launcher: 83 pass / 0 fail (real bash steps, real git sources, injected fake docker).
  • Mutations (one pass, all caught, reverted, control 83/83):
    1. Removing the needs-skip gate → "a job whose need fails is skipped: the dependent never runs" fails.
    2. Relaxing the verdict binding (any ok:true accepted) → four verdict tests fail (non-zero exit carrying ok:true; verdict that is not job-ok; ok:false with job-ok; verdict naming another job) plus the buffer-error refusal path.
    3. Dropping --read-only from containerArgs → the hardening test fails.

Analysis — the three questions I was asked

  1. Needs ordering and if:/always() semantics match GitHub for the supported subset. The gating block moved verbatim from the retired in-launcher loop (I diffed the removed hunk against the new code: same blocked = needs.filter(n => status.get(n) !== "ok"), same when !== "always" bypass, same status propagation). ci-job.mjs normalizes if: to exactly success | always and refuses everything else (ci-unhonourable: only absent, true, success(), always() — line 591), so failure()/cancelled()/composite expressions cannot reach the driver; of the two reachable values, the driver behaves exactly as GitHub does — default runs only when every need succeeded, a skipped need also blocks, and skips propagate transitively through the status map; always() runs after a failed need and the build is still not ok (both driver tests assert this against a real git source).
  2. The per-job clone really comes from the read-only source. runOneJob clones each job's directory with git clone file://<source> — the file:// form forces the transport, so no local-clone hardlinks/alternates touch the source — depth 1 --no-tags or full, per that job's own fetch-depth. The driver's only other source access is git -C <source> show HEAD:<workflow> (read-only). The source is never mounted into the container: containerArgs binds exactly one host path (asserted by test, mutation-backed), and the driver CLI has no bind flag at all (--bind is an unknown argument). With --network none and no mount, the source is unreachable from inside — the host source cannot be written from the sandbox. A host that provides a shallow source for a fetch-depth: 0 job surfaces as the launcher's existing named clean-clone refusal (full-history check), so host-trust failures stay loud rather than silently passing.
  3. The workflow change is scoped. test.yml gains exactly one step in the existing reviewer-image job — per-job-isolation-checks.sh with the built image, mirroring the a9-red-proofs pattern. No other workflow hunks.

Isolation surfaces I can confirm from source and tests (cross-referencing the security focus): the container flags are real and load-bearing (--init, --read-only, tmpfs on /tmp//var/tmp//run, --network none, --cap-drop ALL, --security-opt no-new-privileges, --user = clone owner, one -v bind, tps.reviewer.job label); the only env the container receives beyond the image's own is the create-time env file carrying exactly the three REVIEWER_* keys (mode 0600, removed after the job), so no credential reaches it, and the assignment travels on the container init's environment — docker exec cannot override it. The driver's pass condition binds exit 0 ∧ ok ∧ job-ok ∧ the named job — mutation-verified — and lastJsonLine reads the exec pipe, which step output cannot reach (the launcher's stdout-is-the-verdict contract predates this PR).

Findings (non-blocking):

  1. scripts/reviewer/run-review-jobs.mjs (runOneJob) — the chmod -R a+rX + chmod 0777 widening of each job's clone is only needed when no POSIX uid is available (the --user fallback); on a POSIX host the sandbox already runs as the clone's owner. If a host ever places --scratch somewhere world-traversable, the checkout is world-readable for the job's duration. Contained today (fixtures use mktemp -d); consider widening only when currentUser() is undefined.
  2. scripts/reviewer/per-job-isolation-checks.sh (cleanup) — docker ps -aq --filter label=tps.reviewer.job + docker rm -f removes every reviewer-labeled container on the host. Right on a dedicated CI runner (its documented home); on a shared host it would sweep the production driver's live containers, since the label is the production one. Worth a comment scoping it to CI.

Not independently verified: the full repo matrix and the real-docker isolation lane (loopback/container execution not run here by policy — I did not execute any container on this host); the empirical job1→job2 invisibility claims are the CI lane's to prove, and its script's assertions (clean status, original tracked file, absent ref, empty index, frozen heartbeat, no leftover containers, discarded directories) look sound and are gated on a real review-build-ok from the production driver.

— Kern (architecture review)

@tps-flint
tps-flint merged commit a409f5a into main Oct 2, 2026
23 checks passed
@tps-flint
tps-flint deleted the feat/435-fresh-tree-per-job branch October 2, 2026 15:23
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reviewer sandbox: a fresh isolated tree per needs job

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