c2d5b528e5
Twenty-two branches in the orphan-reaping path are unreachable from the test suite, and the reason is not that they are hard to reach — it is that nothing can reach them. The reaper already accepts an injectable dependency bag, but every test drives real git and injects only the clock and the liveness probe, so each fail-closed return inside it has never executed under test. The two entry points above it took no dependencies at all, so a test could not drive them even if it wanted to. Both now accept the same bag and thread it down, with stdout and stderr writers defaulting to the process streams. The worktree-info probe in the base-branch resolver called its git seam directly while a sibling function in the same file already modelled the injectable form; it now follows that sibling rather than inventing a second convention. Every parameter defaults to today's real implementation, so no existing caller changes behavior. This is a testability seam, not a redesign. Two guards are removed as genuinely dead, each excluded by a check a few lines above it. A NaN test on a value captured by a digits-only pattern cannot fire, because parseInt of digits is never NaN. An emptiness test on a capture group that matched one-or-more non-space characters cannot fire either. Each site keeps a one-line note naming the guard that excludes it, so neither gets restored by a future reader. A third guard was proposed for deletion on the same grounds and is NOT removed, because the claim was wrong. The local-branch fallback returns null when git prints output that is non-empty but names neither branch — the emptiness check above it only catches the empty string, so a single newline reaches the fallback with both flags false. Deleting it would have changed which branch the resolver reports. It stays, and it gets a test. Refs #3057 Co-Authored-By: Claude Opus 5 <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.