e227e81f59
* fix(#2395): persist runtime identity into ~/.gsd/defaults.json for non-Claude installs Bug: finishInstall for non-Claude runtimes never persisted a 'runtime' key into ~/.gsd/defaults.json. resolveRuntime() precedence is GSD_RUNTIME env > config.runtime > 'claude', so both inputs being empty on a Cursor (or any non-Claude) install caused agent_runtime and every runtime-branded slash hint to silently fall through to 'claude'. Cursor users saw 'agent_runtime: "claude"' and Claude-formatted /gsd-* hints with no env or config hand-set. Fix mirrors the existing resolve_model_ids: 'omit' write site at the same call site (bin/install.js finishInstall, gated on !_hostBehaviors(runtime) .nativeModelAliases && !GSD_TEST_MODE). Writes runtime: <runtime> into ~/.gsd/defaults.json when absent/null/empty. Claude is the resolveRuntime() fallback so it needs no write; an explicit pre-existing runtime value is always preserved across installs of any runtime. Pattern parity with #1156 (default-to-omit intent) and #1569 (preserve explicit user value) — the new write is the third sibling on the same install-time persistence block. Regression tests in tests/install.test.cjs cover: - absent / null / empty-string runtime → populated to <install runtime> - explicit pre-existing runtime preserved (no clobber across runtimes) - parameterized across 5 non-Claude runtimes (cursor, codex, opencode, antigravity, windsurf) Out of scope (per triage): the resolveRuntime() precedence order itself (env > config > default) is unchanged. A separate follow-up noted in the issue (subagent rendering when runtime correctly identifies as 'cursor') is unrelated to branding and not addressed here. * chore(#2395): regenerate golden-install-parity fixtures for new runtime persistence The golden install-tree fixtures capture the post-install state, including ~/.gsd/defaults.json. For non-Claude runtimes, defaults.json now includes runtime: <runtime> — content hash updated for each affected runtime (17 golden-install-parity/*.json files). Claude's defaults.json is unchanged (no runtime key written for Claude — it's the resolveRuntime() fallback). * chore(#2395): drop product names from changeset fragment (product-name-purity gate) * test(#2395): move describe out of fix-1521 fold + add same-runtime idempotence test Code review (correctness subagent) flagged 2 Low test-quality issues: 1. The new Bug #2395 describe was inserted inside the folded:fix-1521-real-install-stamping IIFE callback, muddying test reporting and tracing the regression to the wrong epic. Moved it outside the IIFE close to be a top-level sibling. 2. No explicit same-runtime idempotence test — the suite covered cross-runtime preservation (cursor seed → opencode install) but not 'install cursor twice → second is a no-op'. Added: seeds fresh defaults, installs cursor, captures mtime, installs cursor again, asserts runtime unchanged AND defaults.json mtime unchanged (idempotent, no rewrite churn). * chore(changeset): backfill pr:2446 in .changeset/fierce-ravens-dance.md
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.