* fix(careful): check PowerShell tool commands and nested pwsh/cmd (#3067) /careful and /guard matched only the Bash tool, so on Windows, where Claude Code's PowerShell tool is the primary shell, the guard never ran. check-careful.sh also had no PowerShell or cmd patterns. - careful/guard register a PowerShell matcher beside Bash. - hook-extract.sh gains gstack_hook_extract_tool: one parser call reads tool_name with the field, so dispatch adds no fork. - check-careful.sh runs one PowerShell/cmd pattern table on PowerShell tool commands and on the tail of any Bash command that launches pwsh/powershell/cmd: Remove-Item and aliases with -Recurse/-Force prefixes, rd/rmdir/del/erase /s, Format-Volume, Clear-Disk, Clear-Content, [IO.Directory]/[IO.File]::Delete, and asks with an explanation for -EncodedCommand, iex, Start-Process of a shell and & $cmd. Command-position anchors keep Bash negative controls allowed. - /careful documents the coverage as best-effort and points to Claude Code permission deny rules. Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * fix(freeze): NotebookEdit respects the freeze boundary (#3067) NotebookEdit was in no freeze/guard/investigate matcher, and check-freeze.sh read only file_path, so notebook edits ignored /freeze on every platform. NotebookEdit carries tool_input.notebook_path. - freeze, guard and investigate register a NotebookEdit matcher beside Edit and Write. - check-freeze.sh reads file_path, then notebook_path, through the shared extractor; denials name the tool, the field, the boundary and /unfreeze. A helper without the combined reader denies as out of date. Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * test: run hook-scripts on the Windows lane (#3067) The careful/freeze hooks are Windows coverage, but test/hook-scripts.test.ts was excluded from windows-free-tests by the raw /tmp/ pattern; its /tmp/ literals are payload strings that are never opened. Admit it by name and gate the three cases Windows runners cannot host: a symlink (no Developer Mode), a newline in a directory name, and a POSIX ':' PATH prefix. Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * chore(evals): check-careful.sh is free-only for PR selection No paid fixture copies or runs careful/bin/check-careful.sh (the investigate boundary fixture copies hook-extract.sh and check-freeze.sh only); test/hook-scripts.test.ts covers it. As an unknown dependency it restored the full paid gate on every /careful hook change. Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * test(careful): pin the #3067 Invoke-Sqlcmd DROP TABLE example on the PowerShell tool Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * chore(evals): record the check-careful.sh selection change as non-behavioral Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * docs: /careful covers PowerShell (best-effort), /freeze covers NotebookEdit (#3067) Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * chore: release v1.91.37.0 (CHANGELOG, TODOS for deferred hook follow-ups) Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * chore: re-slot release to v1.91.39.0 (v1.91.37.0 and v1.91.38.0 claimed by #3075, #3076) Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * chore: re-slot release to v1.91.41.0 (merge-queue reservation) Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * fix(careful): hook payload reader survives Windows text-mode Python and backslash source paths windows-free-tests (run 37739845723) showed every PowerShell-tool case falling through: Python's text-mode stdout on Windows wrote tool_name as "PowerShell\r", so dispatch never matched, and freeze denials carried stray CRs. gstack_hook_extract_tool now reads and writes bytes. hook-extract.sh also located gstack-state-root.sh with ${BASH_SOURCE%/*}, which strips nothing when the file is sourced through a C:\... path, so gstack_hook_state_root vanished (state-root parity case on the same run). Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * fix(evals): PR lane selects office-hours-auto-mode by its real test name The PR paid lane filters audited files with -t built from CASE_TEST_NAMES[id] ?? id. office-hours-auto-mode's Bun test is named 'AskUserQuestion surfaces when --disallowedTools AskUserQuestion is set', so the filter matched 0 tests and the shard failed (#3077 eval-slices (6), run 37741434771). Map the label, and check every audited PR-profile case is addressable by name. Recorded as non-behavioral for HARNESS_VERSION. Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * chore: CHANGELOG notes for the Windows CRLF and PR-lane name fixes Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> * chore: re-slot release to v1.91.47.0 (merge-queue assignment) Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com> --------- Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>
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gstack digest v1.91.47.0 — regenerate/re-copy after upgrading gstack
Behavioral rules from gstack (https://github.com/garrytan/gstack), compressed for agent hosts without a full skill install. The full skills add workflows, reviews, and evals on top of these rules.
Ethos
- Boil the Ocean — AI makes completeness cheap, so do the complete thing: tests, edge cases, error paths. Shortcuts need an explicit, recorded decision.
- Search Before Building — know what exists before deciding what to build. Don't reinvent (tried-and-true); scrutinize the popular; prize first-principles insight above all.
- User Sovereignty — models recommend, the user decides. Cross-model agreement is signal, never permission. Ask before changing the user's stated direction.
- Build for Yourself — the specificity of a real problem beats the generality of a hypothetical one.
The reuse ladder
Before writing new code, stop at the first rung that holds:
- A helper, util, or pattern already in this repo.
- The standard library.
- A native platform feature (CSS over JS, DB constraint over app code).
- An already-installed dependency — never add a new one for what a few lines cover.
Then build the complete version of what remains. Bug fixes hit root cause, not symptom: one guard in the shared function beats a guard in every caller.
Voice
Direct, concrete, builder-to-builder. Name the file, function, command, and user-visible impact. Short paragraphs; end with what to do. No filler, no corporate tone, no AI vocabulary.
Full gstack
Clone https://github.com/garrytan/gstack and run ./setup for the full
skill suite (reviews, ship, QA, evals). This digest is generated — edit
scripts/gen-agents-digest.ts, not this file.