7b204ad2ac
* feat: extend UAT checkpoint frame language pack (9 more languages) response_language is a free-form config value, but CHECKPOINT_FRAMES only covered 9 languages — any other configured language silently fell back to the English frame. Add Dutch, Polish, Russian, Ukrainian, Turkish, Hindi, Arabic, Vietnamese, and Indonesian frames plus their aliases, with a regression test asserting each resolves instead of falling back. Follow-up to #2402 (PR #2457). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * chore: add changeset for #2527 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * docs(#2530): list UAT checkpoint frame languages in CONFIGURATION.md Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * chore(#2530): point changeset fragment at PR #2557 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(#2530): address Unicode language-pack review * fix: address checkpoint language review * fix: count spacing combining marks in checkpoint width * test: verify checkpoint aliases structurally * fix: isolate RTL checkpoint frames * fix: isolate RTL checkpoint frames correctly * test(#2530): assert checkpoint aliases neither collide nor go unreachable Review Minor #1. A duplicate alias key was invisible to the existing catalog tests: the runtime object is well-formed after JS collapses the literal, the self-alias assertion still holds, and the losing language just stops resolving. tsc catches the byte-equal case (TS1117), but not the two that survive compilation — an alias whose NFC-lowercase form already belongs to another language, and an alias not in lookup form at all, which resolveCheckpointFrame() can never produce. The check reads the source literal rather than the object, since the object no longer records what was written. Both assertions are independently load-bearing: an NFD twin of an existing alias trips the collision check, an uppercase alias trips the unreachability check. Review Minor #2: changeset retyped Changed -> Added. Nine wholly new supported response_language values are an addition under Keep a Changelog, not a modification of existing behavior. * test(#2530): check alias collisions on the catalog, not its source --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com> Co-authored-by: Tom Boucher <trekkie@nomorestars.com> Co-authored-by: Rezolv <dave@sienkowski.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.