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* fix(#2308): make new-milestone workstream-aware; stop clobbering shared PROJECT.md Step 4 rewrote the `## Current Milestone` heading in the shared root PROJECT.md unconditionally. references/workstream-flag.md marks PROJECT.md `# Shared`, and per-workstream milestone state already lives in the workstream's own STATE.md / ROADMAP.md / REQUIREMENTS.md. With parallel milestones — the sanctioned design — whichever workstream ran new-milestone last silently won the shared heading. Step 4 is now skipped when a workstream is active; step 6 no longer stages PROJECT.md in that mode (cmdCommit returns nothing_to_commit rather than failing when a staged path is unchanged). Also fixes a second defect found while diagnosing this, same root cause (the workflow was workstream-unaware): step 1 parsed only --reset-phase-numbers and the milestone name, so GSD_WS was never set — yet ${GSD_WS} was interpolated at the routing lines. It always expanded to empty, so `/gsd:new-milestone --ws x` suggested `/gsd:discuss-phase [N]` with the workstream scope silently dropped, violating the routing-propagation contract. Step 1 now parses --ws using the established idiom from verify-work.md. Guard is keyed on GSD_WS, not $GSD_WORKSTREAM: the runtime launcher does not export the latter and it is only priority 2 of 5 in resolution, so it would miss the --ws flag case that is the actual repro. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SLufH5sDuqA1AiEGu45cuA * test(#2308): regenerate install goldens for the new-milestone workflow change gsd-core/workflows/ ships as an installed artifact, so new-milestone.md's content hash is pinned in all 18 runtime golden fixtures. Only that hash changed. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SLufH5sDuqA1AiEGu45cuA * fix(#2308): address review — inert step-6 guard, dropped Evolution repair, tautological tests Independent review found the first pass was partly cosmetic: 1. The step-6 `if [ -n "$GSD_WS" ]` branch was INERT. GSD_WS is assigned in step 1's shell and each step's bash block runs in its own shell — this file already proves it, since step 5 round-trips OUTGOING_MILESTONE through a file for exactly that reason (#2288). The guard read an unset variable, always took the flat branch, and staged PROJECT.md anyway. Rather than re-deriving GSD_WS in step 6, the branch is removed entirely: step 4 Part A's guard is what protects the shared heading, so post-guard the only content PROJECT.md can carry is Part B's idempotent Evolution backfill — which must be staged, not stranded. A regression test now asserts no cross-step GSD_WS branch returns. 2. Skipping ALL of step 4 also dropped the `## Evolution` structural repair — a shared, idempotent backfill that is not workstream state. A pre-Evolution project running only `--ws` would never get the section that transition and complete-milestone expect. Step 4 is now split: Part A (milestone-state write) is workstream-guarded; Part B (Evolution) always runs. 3. The tests were tautological prose-pinning — including one asserting a comment mentions "#2308". The step-6 test asserted the guard's TEXT was present, so it passed on the inert guard it existed to catch. Replaced with executable tests that extract the step-1 and step-6 fences and run them under bash with stubbed gsd_run, asserting real parse and --files behavior. 4. --ws is now stripped from the milestone name (step 1 previously left "--ws search" in the remaining text), and documented in argument-hint, help/modes/full.md, and docs/COMMANDS.md. 5. Changeset no longer overstates: --ws reaches the prose guard and routing hints only, not the SDK calls (state.milestone-switch/phases.clear/init.new-milestone still take no ${GSD_WS} — out of scope here). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SLufH5sDuqA1AiEGu45cuA * chore(#2308): regenerate SKILL.md, goldens, and size baseline for the argument-hint change skills/gsd-new-milestone/SKILL.md is generated from commands/gsd/new-milestone.md, so documenting --ws in the argument-hint made it stale (caught by lint:ci's gen-plugin-skills --check). Regenerated it plus the install goldens and workflow size baseline, since commands/, skills/, and gsd-core/workflows/ all ship. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SLufH5sDuqA1AiEGu45cuA * docs(#2308): backfill PR number 2338 into changeset Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SLufH5sDuqA1AiEGu45cuA --------- Co-authored-by: Claude Opus 4.8 (1M context) <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.