8c8eda46b0
* test(#4225): failing-first matrix for phase.add --ws workstream-scoped numbering Nine rows driven through the real CLI: the issue's verbatim topology (root roadmap @39 committed, workstream @2, sibling git worktree carrying the root roadmap), same-workstream sibling boundary, empty-workstream first phase, coincidental root-maximum, no---ws control (the #3849 global horizon, byte-for-byte), cross-workstream isolation, sibling lacking the workstream (fail open), add-batch parity, and a next-decimal control. Rows 1/2/3/6/7/8 are RED on next @38e4ce5f62 (numbering computed from the sibling ROOT roadmaps: 40 instead of 3). * fix(#4225): scope the #3849 sibling-worktree widening horizon to the active workstream collectSiblingWorktreePhaseNums scanned each sibling git worktree's ROOT .planning/ (phases/ dirs + ROADMAP.md headers) unconditionally. Under --ws (GSD_WORKSTREAM), every local number source flows through planningDir(cwd) and lands in the workstream scope, but the widening horizon still merged the siblings' ROOT-roadmap numbers into it — so phase.add --ws in a workstream at Phase 2 inside a project whose root roadmap sits at Phase 39 minted Phase 40 (directory 40-<slug>, and a Depends on: Phase 39 that does not exist in the workstream's numbering universe). The horizon now resolves each sibling's planning dir through the SAME canonical resolver, planningDir(wt, ws), with the env workstream read once via planningDir's own discriminator: a workstream-scoped allocation scans the sibling's copy of the SAME workstream (a number taken by that workstream on another branch is still taken — the #3849 widening survives, scoped), and never the sibling's root roadmap or another workstream's. No workstream active: ws is null and the root-scope horizon is byte-for-byte the #3849 behavior. A sibling lacking the workstream directory contributes nothing (fail open, unchanged). phase.add and phase.add-batch share the helper; both scopes of both verbs are covered by the matrix in the previous commit. Output shape and the publishStateContract boundary are untouched — only the number changes. * fix(#4225): rename siblingPlanning -> siblingPlanningDir (review nit) * chore(#4225): changeset fragment (pr number to backfill) * chore(#4225): backfill PR number in changeset --------- 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.