651511d1e3
* test(#4670): add failing-first coverage for the bounded commit-claim window * fix(#4670): bound the commit-claim window to the plan's own history The reconciliation measured plan_head_before..HEAD — a window that grows with every later plan's task and SUMMARY commits plus execute-phase's own phase-completion commit — so an honest plan flagged commit_claim_mismatch as soon as anything landed after it (real project: claims 3/5/2 measured 20/10/5). The executor now also records plan_head_after (HEAD at its measurement moment, after the last task commit, before the SUMMARY commit), and verify-work reconciles exactly against plan_head_before..plan_head_after with a merge-base ancestry check; SUMMARYs without the anchor fall back to the legacy warning path instead of an unsound BLOCKER. Both #3968 failure modes (claimed commits never made; task commits lost) still block, driven by the issue's own fixture scenarios. Emitted-Drift-Ack-Growth: verify-work.md — reconciliation gains the bounded window and legacy fallback (#4670) Emitted-Drift-Ack-Growth: gsd-executor.md — plan_head_after anchor documented in the measurement protocol (#4670) * fix(#4670): name the history-rewrite case and keep the executor under its cap Review findings: the BLOCKER enumeration named only the two #3968 causes, so an honest plan whose recorded window was rewritten afterwards (rebase, amend, cherry-pick) got a mislabeled diagnosis — the clause now names that case with the manual-recount remedy. The executor's growth crossed the LARGE-tier hard cap (49152), so the plan_head_after documentation is compressed to the minimal capture + frontmatter write (verify-work.md carries the semantics), the #2751 PROSE_ALLOWLIST entry is re-pointed at the shifted line (#4670 moved it from 823 to 825), the compact-content baseline is regenerated, and the changeset records the two un-established edges (shared-base waves, subrepo ledgers). Emitted-Drift-Ack-Growth: gsd-executor.md — plan_head_after anchor documented in the measurement protocol (#4670) * docs(#4670): backfill changeset PR number * docs(#4670): backfill changeset PR number --------- 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.