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* test(#3207): invert fresh-create branching tests to expect create+switch The four fresh-create branching tests (#3079) locked in create-without- switch behavior that #3207 identifies as the regression: a fresh phase/ milestone branch is created but HEAD never moves onto it, so the first phase/milestone-scoped commit lands on the base branch. Invert those assertions to expect create+switch, and add two new tests: - fresh-create is non-silent (logs the create+switch) (#3207 AC3) - a second phase commit does not re-warn once HEAD is on the phase branch (#3207 AC5) The existing-branch path (#2539) is deliberately byte-for-byte unchanged. RED — fails on next; the fix follows in a separate fix: commit. * fix(#3207): create-and-switch on the first phase/milestone commit The #3079 fix (PR #3141) replaced git checkout -b with git branch (create-only) unconditionally, including the case where the strategy branch does not yet exist. That regressed #1278: the first phase- or milestone-scoped commit no longer landed on the strategy branch — it stayed on the base branch, and the strategy branch was left as an empty marker pointing at the pre-phase tip. Every subsequent commit then warned 'already exists; committing on the current branch instead of switching', wording that misleads because the tool itself created the branch moments before. Re-separate the two cases #3079 collapsed: - branch does NOT exist -> create AND switch (git checkout -b). The #3079 resurrection hazard cannot apply: the branch was just verified absent, so there is no merged-and-deleted ref to resurrect and no silent move onto an existing unrelated branch (#2539 AC2 is honored by the existing-branch arm, which is unchanged). The create is logged so the first phase-scoped commit is not silent (#3207 AC3). - branch ALREADY exists -> unchanged: no switch, commit on current branch, non-silent warning (#2539/#3079). Once the first commit switches HEAD onto the strategy branch, the currentBranch !== branchName guard skips the block on subsequent commits, so the misleading 'already exists' warning no longer recurs. * chore(#3207): add changeset fragment * chore(#3207): backfill changeset PR number (#3363) --------- 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.