sim bf8905fcc9 fix(#4012): a hang never emits the events I was listening for
The init marker settled it. The diagnostic reported "THE REPORTER LOADED BUT
RECORDED NO TEST EVENTS — the events file contains only the reporter's own
reporter:init marker", which refutes the reporter-never-loaded hypothesis and
leaves exactly one explanation.

The runner spawns a child process per test file and surfaces a subtest's
test:start / test:pass / test:fail to the parent's reporter only once the child
REPORTS that test — which happens when it completes. The fixture hangs forever,
so it never completes, so it never reports. I had recorded exactly those three
event types: the precise set that a hang guarantees you will never see. The
feature could not have worked for the case it was built for.

test:enqueue and test:dequeue are emitted by the runner as it queues and begins
each file, independent of anything inside finishing. test:dequeue is what
actually means "in flight", and it is now the primary signal, with test:start
kept as a secondary one. A file is in flight when it has been dequeued and has
no terminal event.

The four branches now describe states that are all real: the events file absent
(reporter never loaded); the init marker alone (the runner dequeued nothing at
all — genuinely surprising now rather than the expected outcome); everything
dequeued and terminated (the files finished and the process hung afterwards, a
handle leak); and one or more dequeued-but-unterminated files, named, which is
the case this whole feature exists to report.

Verified against the exact shape the real hang produces, by executing
analyzeChunkEvents on a synthetic events file: init + enqueue + dequeue with no
terminal event reports hangs.test.cjs as in flight, and appending a test:pass
clears it. Four more unit tests cover the ordering and multi-file cases with no
subprocess, so this logic is now checkable without a runner round-trip — which
matters, because every defect in this feature so far was visible only remotely.

T1 is untouched and should now pass for the right reason.

Verification runs on the remote runner.

Refs #4012
2026-08-28 19:52:57 -04:00

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.

npm version npm downloads Tests Discord GitHub stars License


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:

  1. Discuss — capture implementation decisions before anything is planned
  2. Plan — research, decompose, and verify the plan fits a fresh context window
  3. Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
  4. Verify — walk through what was built; diagnose and fix before declaring done
  5. 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

Star History Chart

License

MIT License. See LICENSE for details.


Claude Code is powerful. GSD Core makes it reliable.

Description
No description provided
Readme MIT 77 MiB
Languages
JavaScript 82.3%
TypeScript 17.4%
Shell 0.3%