Extends lint-allow-test-rule-refs.cjs with a second, independent check alongside the existing uncited-citation identity ratchet: the total number of distinct test files carrying any allow-test-rule marker (cited or not) is now checked against a tight ceiling via the previously-unwired assertTightCeiling primitive (allowlist-ratchet.cjs, 0 prior callers). A cited exemption is legitimate under ADR-456 but nothing stopped the raw total from growing forever - this closes that gap without duplicating the file walk (both checks consume one shared walkTestFiles pass). Ceiling introduced at the exact measured high-water mark (314 files, grace 3) rather than a padded estimate, per "budgets may only decrease." Also lands the two F17 pieces (absorbed from the now-closed #1885) that had no precondition: - --max-warnings 0 added to lint/lint:ci - local/no-source-grep promoted warn->error in the scripts/bin/ eslint-rules glob block (already error in the tests/ glob) Both promotions were pre-verified against a zero-warning tree (fresh non-cached eslint run) before flipping, per the maintainer's clean- tree-first decision. Not included: local/no-elapsed-assertion promotion, which stays warn pending #3314 (H2) - 10 of 19 clock-touching src modules have no sanctioned time-control mechanism until ADR-456 is amended there. H1 of epic #3053, absorbing #1885 F17. 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.