2b20b7e2cd
* test(#3257: full-line frontmatter comments survive the parse→reconstruct pair AND a mutating state verb parseYamlRegion dropped column-0 # comments and reconstructFrontmatter rebuilt from Object.entries alone, so full-line comments were silently destroyed on every mutating STATE verb. Add failing-first regressions: 3 unit tests for the public pair (comment between keys, leading+trailing, consecutive) and an e2e test running a state verb (state update) on a commented STATE.md — the e2e exercises syncStateFrontmatter's fresh-derivedFm rebuild path, which is the actual loss site the issue is filed against. RED — fails on next; fix follows. * fix(#3257: preserve full-line frontmatter comments through parse→reconstruct AND syncStateFrontmatter Carry column-0 # comments through the frontmatter pair via a Symbol-keyed channel (FULL_LINE_COMMENTS): parseYamlRegion captures ^# lines and attaches them to the next top-level key (leading) or a trailing slot; reconstructFrontmatter re-emits them in place. The Symbol is invisible to Object.entries/keys/JSON, so every existing reader is unchanged; the channel is created only when a comment is seen, so comment-less frontmatter is byte-identical. CRITICAL (isolated review): syncStateFrontmatter rebuilds its target via buildStateFrontmatter (fresh object) + an Object.keys carry-forward, both of which skip the Symbol — so the pair-preserving channel was lost on the very STATE verbs the issue names. Export propagateCommentChannel(source, target) from frontmatter.cts and call it in syncStateFrontmatter before reconstruct, copying the channel onto derivedFm (leading filtered to keys still present so a deleted key's annotation drops with it, trailing preserved). Decision A. * chore(#3257: add changeset fragment * chore(#3257: backfill changeset PR number (#3387) --------- 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.