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* test(#2470): failing-first — pi extension must satisfy pi's auto-discovery filter pi auto-discovers extensions/ entries through isExtensionFile(), which accepts only .ts and .js. GSD installs its extension as gsd.cjs, so pi silently skips it: no /gsd command, no error, no log line. Encodes pi's discovery PREDICATE rather than a literal filename, so the contract keeps holding across future renames, and adds the migration-006 test matrix for retiring the stale gsd.cjs left in pre-fix installs. Red until the fix lands. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * fix(#2470): install pi's extension as gsd.js so pi actually discovers it pi auto-discovers extensions/ entries via isExtensionFile(), which accepts only .ts and .js and skips everything else silently. capabilities/pi declared the dest as gsd.cjs, so the extension installed correctly and was then ignored forever: no /gsd command, no error, no log line. Install it as gsd.js. The in-repo source stays pi/gsd.cjs — tests require() it directly and .cjs is unambiguous CommonJS; only the installed name has to satisfy pi, and pi loads accepted files through jiti, which handles CJS and ESM alike. (The reporter's premise that ~/.pi/agent/package.json declares "type":"commonjs" does not hold — pi never writes that file.) Renaming an installed artifact requires a migration record, so add 006 to retire the stale gsd.cjs from pre-fix installs; without it the old path drops out of the manifest and uninstall can never remove it. The migration plans nothing for an unmanifested gsd.cjs: emitting remove-managed there would have the executor downgrade it to preserve-user and mark it blocked, failing the install for anyone who hand-placed their own file. Also pins body-parser >=2.3.0 (GHSA-v422-hmwv-36x6). The advisory reaches the production tree transitively via the Claude Agent SDK and fails the npm-integrity gate, blocking any PR; pinned via the existing overrides idiom. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * fix(#2470): address orthogonal review findings + register migration checksum Code review: - pi/gsd.cjs's install docstring still told readers to copy the file to extensions/gsd.cjs — the exact silently-broken state this PR fixes. Anyone following it recreated the bug. - Two stale extensions/gsd.cjs comments in install-minimal-hooks.test.cjs. Security review: - _installNativePluginIfDeclared confined nativePlugin.dir but joined nativePlugin.file onto the validated directory unchecked, so a descriptor whose file carried .., an absolute path, or a NUL byte would have written outside configHome. Not reachable in a shipped build (descriptors are first-party and compiled into the capability registry), but file is exactly the field this PR changes. Confine the full dest path instead; for a well-formed descriptor this resolves identically to the previous mkdir(dir) + join(dir, file). Covered by four new write-confinement tests. Also register migration 006 in the #670 EXPECTED_CHECKSUMS baseline — shipped migration bodies are locked to a committed checksum and a new migration fails CI until it is listed. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * fix(#2470): never dereference a symlinked managed path when snapshotting fs.copyFileSync follows symlinks, so a managed path replaced by a link had the REFERENT's bytes copied into the migration journal's rollback and backup trees — a gsd.cjs symlinked at a private key would land that key's contents under gsd-migration-journal/. Deletion was already safe (fs.rmSync unlinks the link, never the target); the copy was not. Nothing GSD installs is ever a symlink, so the faithful snapshot of a symlinked managed path is the link itself. copyPreservingSymlink recreates it, which keeps rollback fidelity (restore re-creates the same link) while never reading the referent. Scoped the pre-delete to the symlink branch only, so the regular-file path keeps copyFileSync's overwrite-in-place and a mid-restore failure cannot destroy the destination. The restore-side existence check moves to lstat, since existsSync follows a link whose target is gone and would silently skip the restore. This lives in the engine all six migrations share, so 000-005 are hardened too. Also regenerates the pi golden-parity hash: correcting pi/gsd.cjs's own install docstring changes the extension's content, which the golden suite caught. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * fix(#2470): symlink-preserve the in-apply failure-recovery restore too The previous commit routed three copy sites through copyPreservingSymlink but missed a fourth: the catch block inside applyInstallerMigrationPlan, which replays rollback snapshots taken earlier in the SAME apply attempt. Those snapshots are symlinks precisely because of that commit, so the raw copyFileSync there dereferenced them and wrote the referent's bytes to the LIVE install path — worse than the journal-tree leak it was meant to fix, since it is user-visible and at a predictable location. Verified by experiment rather than assertion: with the pre-fix line restored, the managed path comes back as a REGULAR FILE containing the referent's bytes; with the fix it comes back as a symlink and the bytes appear nowhere. The accompanying test injects the failure by letting the delete succeed and then throwing once, modelling a later step failing after the delete. That ordering is load-bearing — an earlier draft injected before the delete, which leaves the live path in place, so the pre-fix copyFileSync hit a same-file collision and threw instead of leaking. That draft passed against the bug it was written to catch; this one fails against it. Adds the missing rollback() coverage as well: a restored symlinked managed path must come back as a link pointing at its original target. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * test(#2470): read the backup location from the journal, not the plan The new backup-content assertion read backupRelPath off result.plan.actions, where it is always null: the planner reserves the field and apply chooses the concrete location, recording it in the journal. The assertion therefore failed on "backup path must be recorded for the user" rather than on anything about the behavior it was written to check. Read it from the journal, which is the authoritative record. Verified by executing all four new test bodies in-process against the built engine — the backup file exists and holds the locally patched content. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * chore(#2470): backfill changeset pr number to 2478 * chore(#2470): backfill changeset pr number to 2478 --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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.