51dfa683d4
Two code-confirmed defects in `gsd-tools phase complete` (re-verified against next; the three severe corruption paths the issue filed are superseded by the ADR-1769 Transition Module migration + #2012, so this is the confirmed remainder). 1. Milestone-end mislabel (isLastPhase). The milestone-end determination only cleared isLastPhase when a HIGHER-numbered phase existed, so completing the numerically-highest phase out of order (e.g. Phase 10 before Phase 9) stamped STATE.md `Status: Milestone complete` while a lower phase was still outstanding. Added a lower-phase check: after the existing higher-phase scans, if any earlier phase in the current milestone has an unchecked roadmap checkbox (`[ ]`), isLastPhase becomes false AND next_phase/next_phase_name point at the LOWEST outstanding lower phase — so STATE.md advances to the real gap instead of parking on the just-completed phase. A completed phase always has `[x]` (phase.complete sets it), so all-lower-complete still reports milestone-end; heading-only roadmaps (no checkboxes) retain prior behavior. The checkbox regex mirrors the sibling phasePattern's anchoring (whitespace/bold + required `:`) so unrelated checklist lines mentioning "Phase N" don't match. 2. Workstream root-fallback (no guard). cmdPhaseComplete resolves every path via planningDir(cwd); with a `workstreams/` dir present but no active workstream and no --ws, that returns root `.planning`, so phase.complete wrote STATE.md/ ROADMAP.md (and the mislabel) into the shared root other workstreams read. Added the same #1912 fail-safe guard init.progress got: refuse (asking for `--ws`/active workstream) instead of silently writing root. Resolution itself was already wired globally (resolveActiveWorkstream: --ws > GSD_WORKSTREAM > pointer, set in bin/gsd-tools.cjs), so only the refusal guard was missing. The workstream-mode detection (`listAvailableWorkstreams`) is extracted into planning-workspace.cts as the single source of truth and consumed by BOTH init.progress and phase.complete, so the two fail-safe paths cannot drift. Tests (tests/phase.test.cjs, new #2028 describe): out-of-order completion becomes `Ready to plan` with is_last_phase=false, next_phase pointing at the outstanding phase and Current Phase advancing to it (not the completed phase); all-lower- complete still reports milestone-end; workstream-mode-no-active refuses with an `--ws` hint; `--ws` completes in the workstream leaving root untouched; flat mode unaffected. Fail-first verified locally via direct gsd-tools invocation. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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
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.