e9868a92ba
* fix(#1875): route writeSettings through atomicWriteFileSync writeSettings is the sole writer of settings.json/settings.local.json for six runtimes and wrote them with a naked fs.writeFileSync. Hosts discard the entire settings file on any parse failure, so a crash mid-write cost the user every hook, permission, env var, and statusline they had — not just GSD's. Route it through the atomicWriteFileSync (temp+rename) already used elsewhere in the installer and already bound in this file. withWriteFailure in the migration integration harness matched only the final destination path, so an atomic write bypassed the injection entirely and turned a rollback assertion into a vacuous pass. It now also matches the .tmp- sibling. Refs open-gsd/gsd-core#1874 (F5) Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * chore(#1875): add changeset fragment Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * fix(#1876): honor the readSettings null contract in the #338 local-merge leg readSettings returns null only for an unparseable file — its documented "preserve existing, don't touch" signal. The #338 migration coerced that null to {} and wrote the result back, so a settings.local.json with one stray comma lost all its non-GSD content on the next install. The guard stands the whole migration down rather than just the local write: skipping the merge while still stripping the shared file would destroy the GSD entries outright instead of relocating them. Aborting here reaches a pre-existing latent crash that the clobber had been masking. Both are fixed, with their own regression test: - the unparseable-settings guard returned bare `undefined` while all five sibling early exits return the full result shape, so installAllRuntimes' statusline lookup (results.find(r => r.runtime)) threw; - handleStatusline dereferences result.settings, which is null on every early exit, so the call site now falls through to the banner branch. Both crashes reproduce on unmodified next with a malformed settings.local.json and no migration involved. Refs open-gsd/gsd-core#1874 (F6) Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * chore(#1876): add changeset fragment Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * fix(#1877): lock and atomically write the machine-global ~/.gsd/defaults.json Every non-Claude install read-modify-writes ~/.gsd/defaults.json with no lock and two separate naked whole-file writes. The file is read by every runtime and project on the machine, so concurrent installs lost each other's key, and a crash in either write window truncated it — silently, because the read path swallows parse errors and treats a corrupt file as absent. Take the existing acquireInstallMigrationLock around the read-modify-write and apply both mutations in one atomicWriteFileSync. An install that changes nothing no longer rewrites the file at all. Existing semantics are unchanged: the explicit resolve_model_ids:true opt-in (#1569) and an existing "omit" are preserved, non-canonical values still default to "omit" (#1156), a pre-existing runtime string is preserved (#2395), the malformed-non-object recovery (#1657) stands, and both console lines still print when both keys change. The #2834 structural test sliced a fixed 1200-character window from the function source; the added lock comment pushed an asserted token past it. The window now tracks the function body, so a comment or guard cannot red it spuriously. Refs open-gsd/gsd-core#1874 (F18) Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * chore(#1877): add changeset fragment Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * fix(#1874): preserve target mode and create temp files exclusively in atomicWriteFileSync * fix(#1874): write the migration-lock payload through the exclusive descriptor * chore(#1874): bold-led changeset fragments + fragment for the hardening pass * chore(#1874): rename the shadowed lock-release catch binding * test(#1874): fix source-grep/try-finally violations, add missing fault-injection cases - drop the /TypeError/.test(stderr) source-grep assertion (exitCode already proves the installer didn't crash) - convert inline try/finally fs-mock restoration to t.after() across the F5/F18 test suites, per this repo's no-try/finally-in-test-body rule - add a rename-failure fault-injection case for atomicWriteFileSync - add a read-only-.gsd-directory fault-injection case for the F18 lock+write path - extract MAX_TEMP_FILE_ATTEMPTS constant, dedupe the partial-write-then-throw mock into a shared tests/helpers.cjs helper Found during this session's own Standards-axis code-review pass on resurrected PR #3385. * chore(#1874): reset changeset fragments to pr:0 placeholder The resurrected fragments carried the closed PR's number (3385). This is a new PR, so reset to the pr:0 placeholder and backfill the real number once gh pr create returns it, per CONTRIBUTING.md's PR Number Handling. * chore(#1874): backfill changeset PR number (#3966) --------- Co-authored-by: Richard Spiers <1355479+richardspiers@users.noreply.github.com> Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Co-authored-by: sim <sim@local>
GSD Core
Git. Ship. Done.
English · Português · 简体中文 · 日本語 · 한국어
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.