476394689a
* test(#4254): sequential executor root pin — failing-first regression + matrix The new suite executes the shipped supplied-root-pin guard against real git fixtures (drifted primary-checkout cwd halts before the write and the FATAL names both roots; matching cwd permits it; unexpanded/empty pins halt; normalization forms; submodule and sibling boundaries; metacharacter quoting; drive-letter form gate) and locks the dispatch contract across execute-phase.md, its sequential-root-pin step fragment, and worktree-path-safety.md. The #2772 per-plan serialization assertion retargets to the fragment that now carries those rules (ADR-857 Phase 6 ceiling), plus the host-step wiring. * fix(#4254): pin sequential executor to the orchestrator's validated root Sequential-mode dispatch told the executor to self-derive PROJECT_ROOT from its own cwd; every existing guard is worktree-mode-only or self-referential, so an executor spawned with a drifted cwd committed onto the wrong checkout silently. - worktree-path-safety.md step 0p: mode-agnostic supplied-root pin guard, composed by the orchestrator at build time with the literal $ORCHESTRATOR_WT (git-vs-git comparison on both sides — representation-safe on Windows, the #4296 lesson), fail-closed on empty/unexpanded pins, registered-submodule allowance, warn-and-proceed only when the dispatch carries no pin block. - execute-phase.md sequential branch: build-time embed of the bound <project_root_pin> via the new execute-phase/steps/sequential-root-pin.md fragment (ADR-857 Phase 6 frozen ceiling — the host step cannot grow; the wave serialization rules move with the fragment, verbatim in substance) plus the per-write/commit pin instruction in <sequential_execution>. Worktree-mode dispatch untouched (its self-derived toplevel IS correct there). - INVENTORY rows (5 locales) + INVENTORY-MANIFEST + install-tree goldens regenerated for the new fragment; changeset added. * chore(#4254): backfill changeset PR number * fix(#4254): accept backslash-separated Windows drive pins CI on windows-latest showed every permit-path test failing with "Actual root: <none>": pins composed from Node's path.join arrive in the backslash drive form (C:\Users\RUNNER~1\...), which the guard's absolute-form gate rejected before the cwd-side root was ever computed — a legitimate matching pin could never pass. The gate now accepts either separator ([A-Za-z]:[\\/]); git -C resolves both forms (and 8.3 short names) to the same canonical toplevel, so the git-vs-git comparison is unaffected. Form-gate tests cover the emitted (C:/…) and produced (C:\…) spellings plus short names. * fix(#4254): portable drive-form gate for MSYS bash The bracket class [\\/] that accepted backslash drive pins parses inconsistently on MSYS bash (the Windows CI leg still rejected C:\ pins — every permit-path test red with "Actual root: <none>"). Replace it with standard pattern escaping outside brackets: [A-Za-z]:/*|[A-Za-z]:\\* — the escape form is version- and build-portable. Verified across all forms: both drive spellings accepted; bare "C:", relative, empty, and unexpanded rejected. * fix(#4254): runtime-generated backslash comparator + self-describing FATAL The Windows CI legs failed every #4254 permit-path row with 'Actual root: <none>' across two prior pattern spellings ([\\/] and \\*). Stage misattribution: <none> appears whenever the FATAL fires BEFORE the cwd-side capture assigns ACTUAL_ROOT — the absolute-form gate was what fired. Mechanism: the test harness spawns bash -c <script> through the Windows command-line boundary; that round-trip applies one extra shell-quoting pass with double-quote semantics — a backslash written twice in the script text arrives halved, while a lone backslash survives (the pin displays intact; row 9's pure-bash gate independently showed the halved pattern rejecting C:\ while C:/ still passed its surviving arm). On windows-latest every pin carries backslashes (os.tmpdir() is the 8.3 short form C:\Users\RUNNER~1\...), so the gate ate every pin before the actual root was ever computed. Fix, robust by construction: - the drive-form gate generates its backslash comparator at RUNTIME (BS=$(printf '\134'); match [A-Za-z]:"$BS"*) — the shipped guard now contains no doubled backslash anywhere, enforced by a regression assertion on the extracted guard text; - the FATAL self-describes: Guard stage (pin-unbound / form-gate / actual-capture / pinned-capture / root-mismatch) plus a Diagnostic line carrying git's own stderr for capture failures and both compared values for mismatches — future platform failures name their stage in the log; - row 9's hand-rolled duplicate case gate (transit-fragile copy, #4296 Minor 1 duplication smell) is replaced by driving the SHIPPED guard and asserting the stage; rows 2/4 pin the new stage machinery. Validated on darwin across drift/match/relative/unbound/empty/bare-drive/ forward-and-backslash drive forms, each also re-run under a simulated Windows transit (every doubled backslash halved) with identical outcomes. * fix(#4254): close the empty-comparator fail-open seam in the drive-form gate Self-review of the runtime-generated backslash comparator: if printf's octal escape ever returned empty, the drive arm [A-Za-z]:"$BS"* would widen to drive-RELATIVE pins (C:foo) — the construction's one theoretical fail-open path. Fail closed with a self-describing diagnostic instead of trusting the shell's printf. --------- Co-authored-by: sim <sim@local>
GSD Core
Git. Ship. Done.
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A light-weight meta-prompting, context engineering, and spec-driven development system for Claude Code, OpenCode, Antigravity CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more.
What is GSD Core
GSD Core is a context-engineering and spec-driven development framework that drives AI coding agents (Claude Code, Codex, Antigravity CLI, Kimi CLI, Copilot, Cursor, and more) through a disciplined phase loop. It solves context rot — the quality degradation that accumulates as an AI fills its context window — by running all heavy research, planning, and execution work in fresh-context subagents while keeping your main session lean.
How it works
Each milestone repeats the same five-step loop, one phase at a time:
- Discuss — capture implementation decisions before anything is planned
- Plan — research, decompose, and verify the plan fits a fresh context window
- Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
- Verify — walk through what was built; diagnose and fix before declaring done
- Ship — create the PR, archive the phase, repeat for the next one
Quickstart
npx @opengsd/gsd-core@latest
The installer prompts for your runtime (Claude Code, OpenCode, Antigravity CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more) and whether to install globally or locally. The installer is required for cross-runtime compatibility — do not copy files from agents/ or commands/ directly.
On another runtime or without Node.js? See Install on your runtime.
Once installed, start a new project or onboard an existing repo:
/gsd-new-project # greenfield project
/gsd-onboard # existing codebase
New here? Follow Your first project for a guided walkthrough from install to first shipped phase, or Onboarding an existing codebase for brownfield setup.
Documentation
What's new in 1.7.0 → docs/whats-new-1.7.0.md
Tutorials — learning by doing:
How-to guides — task-focused recipes:
Reference — authoritative facts:
Explanation — concepts and design decisions:
Full index: docs/README.md. Other languages: 日本語 · 한국어 · Português · 简体中文.
Why it works
Most AI-coding setups fail at scale because context bloat silently degrades output quality, there is no shared memory between sessions, and nothing verifies that code actually works. GSD Core solves all three: heavy work runs in fresh subagents, structured artifacts like STATE.md and CONTEXT.md survive session boundaries, and the verify step walks through what was built and generates fix plans before a phase is declared done. See docs/explanation/context-engineering.md for the full reasoning.
Troubleshooting? See docs/how-to/recover-and-troubleshoot.md.
Community
| Project | Platform |
|---|---|
| gsd-opencode | Original OpenCode port |
| Discord | Community support |
Star History
License
MIT License. See LICENSE for details.
Claude Code is powerful. GSD Core makes it reliable.