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* fix(#2539): anchor commit phase-token extraction to the phases/ segment; drop silent switch-to-existing cmdCommit auto-detected the commit's phase from --files with an unanchored `match(/(\d+(?:\.\d+)*)-/)`, which returns the leftmost digit-run-then-hyphen anywhere in the joined path. A project_code ending in a digit (PROJECT_V2) made `.planning/phases/PROJECT_V2-07-name/…` match the `2-` inside `V2-` before the real `07-` token, resolving phase 2. findPhaseInternal also searches archived milestones, so an existing archived phase 2 produced a real branch name and the silent `git checkout <existing-branch>` fallback switched the whole working tree onto the wrong branch in the same call that then committed. The extraction now anchors to the directory segment immediately under `.planning/phases/` (or `.planning/milestones/<v>-phases/`) and runs it through the existing project-code-aware extractPhaseToken helper — the single owner shared by the other 6 call sites — rather than introducing a fourth independent copy of phase-token-matching logic. The auto-switch keeps create-if-absent only (the #1278 intent: ensure the branch exists before the first commit on it); it no longer force-switches an already-checked-out working branch onto a different existing branch. Adds two regression fixtures: a digit-suffixed project_code + an archived phase whose number collides with the trailing digit (the silent-wrong-branch case), and a pre-existing phase branch that must not be silently switched onto. * test(#2539): assert non-silent warning; hoist execFileSync; normalizePhaseName guard Address orthogonal-review findings on the #2539 fix: - Spec AC2 ('an auto-checkout mid-commit must never happen silently'): the no-switch path now writes a 'Warning: resolved phase branch X already exists; committing on Y instead' line to stderr when checkout -b fails because the branch already exists. The regression test captures stderr via spawnSync and asserts the warning, so neither direction of the branching resolution is silent. - Spec AC3 ('reuse normalizePhaseName/extractPhaseToken/stripProjectCodePrefix'): the token-acceptance guard now runs the candidate token through normalizePhaseName and accepts it only when it normalizes to a numeric phase form, rather than the brittle 'token !== phaseDir && /\d/.test(token)' check that leaned on extractPhaseToken's undocumented dirName fallback. - Standards (Duplicated Code): hoist execFileSync/spawnSync requires to the top of the 'commit command' describe block instead of inlining them per test. * fix(#2539): build phase-token shape from PHASE_NUMBER_TOKEN_SOURCE (#2128 guard) The acceptance guard regex in detectPhaseNumberFromFiles was a hardcoded `/^\d+[A-Z]?(?:\.\d+)*$/i` — a literal re-derivation of the canonical phase-number grammar, which the #2128 phase-id drift guard (tests/phase-id-drift-guard.test.cjs) rejects unless sanctioned with a `// phase-id-owner:` marker. Build it from the single-owner PHASE_NUMBER_TOKEN_SOURCE export instead, so this read-side acceptance check cannot drift from every other phase-token reader. gsd-test reported this as 2 failures (linux-node22 + linux-node24) on the prior commit. * docs(#2539): backfill changeset pr: 2669
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.