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Harden brainstorm stop-server stale pid handling#1703

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VeraPyuyi wants to merge 71 commits into
obra:devfrom
VeraPyuyi:codex/stop-server-stale-pid
Closed

Harden brainstorm stop-server stale pid handling#1703
VeraPyuyi wants to merge 71 commits into
obra:devfrom
VeraPyuyi:codex/stop-server-stale-pid

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Summary

  • harden brainstorm stop-server.sh so stale or reused state/server.pid values do not kill unrelated processes
  • verify process ownership before SIGTERM and again before SIGKILL using the Node server.cjs entrypoint plus matching session ownership
  • fail closed as {status:stale_pid} when ownership cannot be proven, while preserving {status:stopped} for real brainstorm servers
  • add regression coverage for unrelated PIDs, fake server.cjs argv mentions, different-session brainstorm servers, paths with spaces, and real server shutdown

Validation

  • C:\Program Files\Git\bin\bash.exe tests/brainstorm-server/stop-server.test.sh -> 9 passed, 0 failed
  • C:\Program Files\Git\bin\bash.exe tests/brainstorm-server/windows-lifecycle.test.sh -> 12 passed, 0 failed, 0 skipped
  • C:\Program Files\Git\bin\bash.exe -n skills/brainstorming/scripts/stop-server.sh
  • C:\Program Files\Git\bin\bash.exe -n tests/brainstorm-server/stop-server.test.sh
  • git diff --check
  • git diff --cached --check

Note: scripts/lint-shell.sh skills/brainstorming/scripts/stop-server.sh tests/brainstorm-server/stop-server.test.sh could not run locally because shellcheck is not installed on PATH.

robotsnh and others added 30 commits May 6, 2026 11:22
Replaced the bullet point next to "Jesse" in the sponsorship section of the `README` into a dash. This is needed so the `README` renders properly on markdown viewers.
Records scope, branching, architecture, deletion gate, verification
protocol, path/config edits, migration ordering, and post-implementation
verification. Frames CI integration, scenario co-location, and Python
package rename as deferred work.

Per-file deletion of bash tests under superpowers/tests/ is gated by a
subagent that compares each bash assertion to its drill scenario's
verify block. Default keeps the bash test if any assertion is unmatched.

Branching: independent off dev (f/evals-lift), not stacked on
f/cross-platform.
Two parallel reviewers raised legitimate issues against the lift-drill-
into-evals spec. Updates:

- Coverage map for tests/explicit-skill-requests/ corrected: 6 run-*.sh
  scripts + prompts, not "2 scenarios cover all". Several scripts
  (Haiku, multi-turn, please-use-brainstorming, use-systematic-debugging)
  have no drill counterpart and stay.
- tests/claude-code/test-subagent-driven-development.sh marked as
  meta/documentation test (asks agent to describe SDD); no drill
  scenario covers description tests; defaults to keep.
- Path-defaults section now shows verified evidence: PROJECT_ROOT
  resolves to evals/ post-move; only claude*.yaml substitute
  ${SUPERPOWERS_ROOT} in args (codex/gemini use it via os.environ
  in pre-run hooks); helper invocation order specified (after
  load_dotenv, before click definitions).
- Step 2 copy uses explicit rsync excludes (.git, .venv, results,
  .env, __pycache__, *.egg-info, .private-journal); checksum-level
  verification rather than file-count.
- Drill SHA recorded at copy time in commit message and
  evals/.drill-source-sha for divergence detection.
- evals/tests/ pytest suite added to verification protocol.
- Reference scrub list expanded: RELEASE-NOTES.md,
  docs/superpowers/plans/, .codex-plugin/ (corrected from .codex/),
  lefthook.yml. Excluded dirs called out (node_modules/, .venv/,
  evals/).
- Historical plan docs / RELEASE-NOTES handling: annotate, don't
  rewrite.
- evals/lefthook.yml move documented (drill ships its own;
  contributors run cd evals && lefthook run pre-commit manually).
- PR description checklist includes archival action item for
  obra/drill post-merge.

False finding rejected: svelte-todo fixture is complete on disk
(design.md + plan.md + scaffold.sh present); reviewer obra#1 obra#3 dropped.
15-task implementation plan derived from the design spec at
docs/superpowers/specs/2026-05-06-lift-drill-into-evals-design.md.

Each task is bite-sized (2-5 min steps) with exact commands, exact
file paths, and exact code where required. Subagent verification
gates per the spec are written out as concrete prompt templates.

Self-review:
- Spec coverage: every spec section maps to a task
- Placeholder scan: no TBD/TODO/placeholder/fill-in-later language
- Type consistency: helper named _set_superpowers_root_default
  consistently; drill SHA recorded in evals/.drill-source-sha
  consistently
rsync of obra/drill@013fcb8b7dbefd6d3fa4653493e5d2ec8e7f985b into superpowers/evals/, excluding
.git/, .venv/, results/, .env/, __pycache__/, *.egg-info/,
.private-journal/.

The drill repo is unaffected by this commit; archival is a separate
manual step after this PR merges.

Source SHA recorded at evals/.drill-source-sha for divergence
detection.
Adds _set_superpowers_root_default() to drill/cli.py, called at
module import after load_dotenv(). PROJECT_ROOT resolves to evals/
post-lift; its parent is the superpowers repo root, which is the
correct value for SUPERPOWERS_ROOT.

Existing env values are respected as overrides via os.environ.setdefault.

Tests:
- helper sets default when var is unset
- helper does not override when var is already set
These backends only read SUPERPOWERS_ROOT via engine.py/setup.py's
os.environ access, which the new cli.py default helper supplies
automatically. claude*.yaml keep SUPERPOWERS_ROOT in required_env
because they interpolate ${SUPERPOWERS_ROOT} into --plugin-dir args.
The cli.py helper now defaults the env var. Mention as override only.
…ing-* scenarios)

Subagent verification confirmed each prompt's intent matches its
corresponding drill scenario's turns[].intent verbatim, and each
scenario has both a deterministic skill-called assertion and a
semantic LLM criterion confirming the matching skill was loaded
(actually a stronger check than the bash test, which only confirms
the skill fires anywhere in the stream).

All 6 prompts deleted. The runner had no remaining prompts to drive,
so run-test.sh and run-all.sh deleted as well.
…rsation-skill-invocation)

Subagent verification: every bash assertion (Skill tool invoked +
specific skill name 'subagent-driven-development' loaded after the
agent describes it conversationally in turn 1) maps to the drill
scenario's skill-called assertion + criteria paragraph requiring
the skill to fire in direct response to the second user message.
Drill additionally asserts tool-called Agent (subagent dispatch)
which is stricter than the bash test.

Other runners in tests/explicit-skill-requests/ (haiku, multiturn,
extended-multiturn) and their prompt files are preserved — they
have no drill coverage and exercise different behaviors.
…ractals + sdd-svelte-todo)

The bash test had ZERO output assertions — it just ran claude -p
and printed token usage. Drill's scenarios are strictly more
rigorous:

go-fractals: skill-called SDD + tool-called Agent + go test ./...
passes + cmd/fractals/main.go exists + >=4 commits + LLM criteria
verifying real SDD workflow.

svelte-todo: skill-called SDD + tool-called Agent + npm test passes
+ playwright e2e passes + package.json + svelte.config.js or
vite.config.ts + >=4 commits + LLM criteria.

design.md and plan.md are byte-identical between bash fixtures and
drill fixtures (evals/fixtures/sdd-{go-fractals,svelte-todo}/).
Drill's setup helper (scaffold_sdd_*) forces git init -b main
(stricter than bash's reliance on init.defaultBranch). The
.claude/settings.local.json from bash scaffold.sh is unnecessary
for drill since permissions are managed via backend YAML.

Subagent verification: SAFE TO DELETE for both.
…eviewer-catches-planted-flaws)

Subagent verification: every bash assertion (TODO in Requirements
section flagged, "specified later" deferral flagged, Issues section
present, did-not-approve verdict) maps to drill verify.criteria
entries. Setup parity covered by setup.assertions (test-feature-design.md
exists with TODO + 'specified later' content). Drill is stricter:
asserts tool-called Agent (subagent dispatch) which the bash test
did not check.
…eview-catches-planted-bugs)

Subagent verification: every bash assertion (skill invocation,
subagent dispatch, SQL injection flagged, credential handling
flagged, no merge approval) maps to drill verify checks. Drill is
stricter: bundles severity (Critical/Important) into the same
criteria as the finding itself (bash split severity into a separate
test). Setup parity covered (src/db.js with string concat + identity
hash, two commits).

The drill scenario header explicitly says it is the
"cross-harness, semantically-judged replacement for the bash test."
- test-worktree-native-preference.sh: drill covers PRESSURE phase only;
  RED + GREEN baselines have no drill counterpart and are kept so
  the RED-GREEN-REFACTOR validation remains rerunnable end-to-end.
- test-subagent-driven-development-integration.sh: drill covers the
  YAGNI subset (forbidden exports + reviewer-as-gate). Bash adds
  >=3 commits, >=2 subagent dispatches, TodoWrite usage, test file
  existence check, and token-budget telemetry. Kept until drill
  scenario covers those or they are retired.
- test-subagent-driven-development.sh: tests agent's ability to
  *describe* SDD (string matches against expected keywords). Drill
  scenarios test behavior, not description-recall. Kept by design.

Subagent verification recorded in commit messages of subsequent
deletions; gap analyses driving these annotations are also in the
verification subagent reports for the gating sweep.
- RELEASE-NOTES.md: note that test-requesting-code-review.sh and
  test-document-review-system.sh were lifted into drill scenarios
  on 2026-05-06; references are preserved as dated artifacts.
- docs/superpowers/plans/2026-03-23-codex-app-compatibility.md:
  note that tests/skill-triggering/ was lifted into drill scenarios
  on 2026-05-06; the run-all.sh reference is a dated artifact.

Subagent second-pass scrub confirmed no other active references in
the tree (excluding evals/ and the spec/plan for this work itself).
- docs/testing.md split into Plugin tests + Skill behavior evals.
  Plugin tests section enumerates the bash tests that survive
  (kept by drill-coverage analysis or as describe-skill tests).
- CLAUDE.md adds Eval harness section pointing at evals/.
- README.md Contributing section mentions evals/ alongside tests/.
- .gitignore adds evals/{results,.venv,.env} as belt-and-suspenders
  (evals/.gitignore covers these locally; root-level entries help
  tooling that does not recurse into nested ignore files).
- evals/README.md, evals/CLAUDE.md: fix uv install command from
  'uv sync --dev' to 'uv sync --extra dev'. Drill's pyproject.toml
  uses [project.optional-dependencies], so --dev is a no-op for
  pytest/ruff/ty; --extra dev is the correct invocation.
- tests/claude-code/run-skill-tests.sh: drop test-requesting-code-review.sh
  from integration_tests array (file deleted earlier in this branch).
- tests/claude-code/README.md: replace test-requesting-code-review.sh
  section with test-worktree-native-preference.sh (the worktree test
  is kept; the code-review test was lifted into drill).
- docs/testing.md, CLAUDE.md: remove "Copilot CLI" from the harness
  list. evals/backends/ has claude*, codex, gemini configs but no
  copilot.yaml, so the claim was unsupported.

Adversarial review credit: reviewer obra#2 found four legitimate issues
(uv-sync, run-skill-tests stale ref, README stale ref via obra#1, and
Copilot CLI fabrication); reviewer obra#1 found two distinct issues
(run-skill-tests + tests/claude-code/README.md). Reviewer obra#2 wins
this round.
* Remove Circle K signal from review skill

* Add generic review hesitation guidance

* Use Jesse wording for review hesitation guidance
Replace generic third-person "Claude" with "agents" / "your agent"
forms across active skill prose, the README intro, and the vendored
anthropic-best-practices.md reference. Carve-outs preserved:
historical attribution paths, the "Variant C: Claude.AI Emphatic
Style" example label, model identifiers (Haiku/Sonnet/Opus), and the
"In Claude Code:" per-platform skill-dispatch list.

Coined-term rename: "Claude Search Optimization (CSO)" → "Skill
Discovery Optimization (SDO)" in writing-skills/SKILL.md.

Files in this commit also pick up later-phase changes that
accumulated on the same files (dispatching-parallel-agents code-
example transformation, writing-skills numbering and path fixes).
The bundled spec at docs/superpowers/specs/ records the original
scope and the carve-outs.

README.md gets only its prose change here; the alphabetization
lands in Phase C's commit.
Two structural changes:

1. Generalize CLAUDE.md-specific guidance:
   - "Project-specific conventions (put in CLAUDE.md)" → "(put in
     your instructions file)" in writing-skills/SKILL.md
   - "(explicit CLAUDE.md violation)" → "(explicit instruction-file
     violation)" in receiving-code-review/SKILL.md
   - The instruction-priority list in using-superpowers/SKILL.md
     stays inclusive (CLAUDE.md, GEMINI.md, AGENTS.md) — that's
     load-bearing, not a substitution opportunity.

2. Per-platform tool reference files at skills/using-superpowers/
   references/{claude-code,codex,copilot,gemini}-tools.md. Each ref
   documents:
   - The runtime's preferred instructions file (CLAUDE.md, AGENTS.md,
     GEMINI.md, etc.) and how it loads
   - The runtime's personal-skills directory + cross-runtime
     ~/.agents/skills/ path where applicable
   - Action-language → tool-name mapping table

Tool names and table content reflect the source-verified state from
direct inspection of openai/codex, google-gemini/gemini-cli,
sst/opencode, and the installed @github/copilot package. Filenames
and behaviors are sourced from each runtime's official docs.

Files in this commit also pick up later-phase changes that
accumulated on the same files (using-superpowers/SKILL.md "How to
Access Skills" overhaul, action-language flowchart, refs' final
table content). The bundled spec records original scope.
arimu1 and others added 14 commits June 1, 2026 15:57
Rewrite the Windows polyglot hook documentation to match the current run-hook.cmd dispatcher and update the porting guide cross-reference.\n\nFixes obra#1653.
Add a conditional TDD Evidence field to the implementer report format so controllers can verify RED and GREEN output when TDD was required.

The field asks for the command run, relevant RED/GREEN output, and the expected RED failure reason rather than raw full logs.

Fixes obra#994.
Serialize antigravity against the Gemini Code Assist rate limit
(max_concurrency=1), diagnose 429/RESOURCE_EXHAUSTED honestly instead of as
auth, fail-fast on a latched window, and tolerant preflight OK match.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Adds `run-all --scenarios` for resuming a scenario subset across the Code
Assist rate-limit windows. Follows the agy rate-limit fix (79f9963).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
arittr pushed a commit that referenced this pull request Jun 11, 2026
stop-server.sh read server.pid and SIGKILL'd that PID with no checks. After a
reboot or PID wraparound the pid file can point at an unrelated, live process —
which we would then kill.

Verify the PID is actually our server (a running 'node ... server.cjs') before
signalling it. If ownership can't be proven, fail closed: remove the stale pid
file and report {status: stale_pid} without killing anything. Real servers still
stop ({status: stopped}); a missing pid file still reports not_running.

Adds stop-server.test.sh covering: an unrelated reused PID is left alone, a real
server is stopped, and a missing pid file.

Refs #1703
arittr pushed a commit that referenced this pull request Jun 11, 2026
The node+server.cjs command match (from the adversarial review) still matched any
unrelated node process running a file named server.cjs. When we recorded the
bound port (state/server-info) and lsof is available, additionally require the
PID to be the process actually LISTENING on this session's port — which rules out
a different project's server.cjs / editor task runner that recycled the stale
PID. Falls back to the command match when the port or lsof isn't available.

Test: a 'node server.cjs' process not listening on the recorded port is spared.

Refs #1703
arittr pushed a commit that referenced this pull request Jun 11, 2026
stop-server.sh read server.pid and SIGKILL'd that PID with no checks. After a
reboot or PID wraparound the pid file can point at an unrelated, live process —
which we would then kill.

Verify the PID is actually our server (a running 'node ... server.cjs') before
signalling it. If ownership can't be proven, fail closed: remove the stale pid
file and report {status: stale_pid} without killing anything. Real servers still
stop ({status: stopped}); a missing pid file still reports not_running.

Adds stop-server.test.sh covering: an unrelated reused PID is left alone, a real
server is stopped, and a missing pid file.

Refs #1703
arittr pushed a commit that referenced this pull request Jun 11, 2026
The node+server.cjs command match (from the adversarial review) still matched any
unrelated node process running a file named server.cjs. When we recorded the
bound port (state/server-info) and lsof is available, additionally require the
PID to be the process actually LISTENING on this session's port — which rules out
a different project's server.cjs / editor task runner that recycled the stale
PID. Falls back to the command match when the port or lsof isn't available.

Test: a 'node server.cjs' process not listening on the recorded port is spared.

Refs #1703
@obra obra mentioned this pull request Jun 16, 2026
8 tasks
arittr pushed a commit that referenced this pull request Jun 16, 2026
stop-server.sh read server.pid and SIGKILL'd that PID with no checks. After a
reboot or PID wraparound the pid file can point at an unrelated, live process —
which we would then kill.

Verify the PID is actually our server (a running 'node ... server.cjs') before
signalling it. If ownership can't be proven, fail closed: remove the stale pid
file and report {status: stale_pid} without killing anything. Real servers still
stop ({status: stopped}); a missing pid file still reports not_running.

Adds stop-server.test.sh covering: an unrelated reused PID is left alone, a real
server is stopped, and a missing pid file.

Refs #1703
arittr pushed a commit that referenced this pull request Jun 16, 2026
The node+server.cjs command match (from the adversarial review) still matched any
unrelated node process running a file named server.cjs. When we recorded the
bound port (state/server-info) and lsof is available, additionally require the
PID to be the process actually LISTENING on this session's port — which rules out
a different project's server.cjs / editor task runner that recycled the stale
PID. Falls back to the command match when the port or lsof isn't available.

Test: a 'node server.cjs' process not listening on the recorded port is spared.

Refs #1703
@obra obra mentioned this pull request Jun 16, 2026
8 tasks
@obra obra force-pushed the dev branch 3 times, most recently from 210b867 to b62616f Compare June 17, 2026 05:46
@obra

obra commented Jun 17, 2026

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Thanks @VeraPyuyi — verifying ownership before signaling a PID is exactly the right hardening for stop-server.sh.

After the 6.0 release: 6.0.0 ships ownership verification in stop-server.sh. Verified against v6.0.2 (and confirmed identical on origin/dev):

  • before sending any signal, it checks the target PID's argv carries a --brainstorm-server-id=<id> that matches the per-start id written to state/server-instance-id (is_brainstorm_server / command_has_server_id)
  • it fails closed, reporting {"status":"stale_pid"} rather than risking SIGTERM/SIGKILL on an unrelated node after a reboot

That's a different implementation from this PR's (path/cwd/environ matching) but the same — arguably stronger — guarantee, and it's the work referenced in the 6.0 release notes. So I'm closing this as resolved in 6.0.

If stop-server.sh ever signals the wrong process on 6.0.2, please reopen or file a fresh issue with the scenario.


Triaged by Claude Opus 4.8 (claude-opus-4-8, 1M context) running in Claude Code 2.1.181, with the superpowers and github-triage plugins. Post-6.0 obsolescence pass — verified against the released v6.0.2 source tree, not from memory. (No session ID available to cite in this environment.)

@obra obra closed this Jun 17, 2026
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