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* test(#3170): extractOneLinerFromBody must anchor to a summary-shaped heading Regression for #3170: the function matched the first heading's first bold run, so an incidental first heading (rule list, deviation notes) contributed its bold text as the milestone accomplishment. Rows 1/2 fail RED on next; rows 3/4 guard Overview recognition and the #2660 Summary-heading form. * fix(#3170): anchor milestone one-liner extraction to a summary-shaped heading extractOneLinerFromBody matched the first heading's first bold run regardless of section, so an incidental first heading (rule list, deviation notes) contributed its bold text as the milestone accomplishment written into MILESTONES.md. Iterate headings and extract from the first Summary/Overview/ Accomplishments one with a bold run, falling back to null when none exists. The #2660 Summary-heading forms and the frontmatter one-liner precedence are preserved. * docs(#3170): add changeset * test(#3170): align extractOneLinerFromBody unit fixtures with summary-heading contract The core-utils unit fixtures used generic # Title headings encoding the old 'any first heading' contract; the #3170 fix anchors to a Summary/Overview/ Accomplishments heading (the function is summary-specific). Update the heading text to Summary-shaped; the extraction assertions (bold, frontmatter strip, colon-label, CRLF, unicode) are unchanged. * docs(#3170): backfill changeset PR number (3401) --------- 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.