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* test(#1074): add additive per-file workflow size baseline guard (PR 1/3) Introduces a committed per-file size baseline scheme alongside (not replacing) the existing tier anti-creep tests. Green by construction — the baseline records current sizes, so both schemes pass side by side during migration. - scripts/lib/allowlist-ratchet.cjs: add assertFileBaseline (third pure helper, same injected-fail style) — per-file growth/shrink/add/remove diff vs baseline. - scripts/workflow-size.cjs: single source of truth for LF-normalized byte counting (#683) + workflow enumeration, shared by the guard and the generator so they can never measure differently. Lives in scripts/ root (NOT scripts/lib/) because it is dev/CI-only tooling — scripts/lib/ is bundled into the installed runtime, scripts/ root is not, so this keeps it out of the shipped payload. - scripts/update-size-baseline.cjs + npm run size:baseline: regenerate the snapshot (sorted keys, trailing newline, idempotent). - tests/workflow-size-baseline.json: generated snapshot (88 workflows). - tests/workflow-size-budget.test.cjs: import the shared counter (drops the duplicated local byteCount) and add the per-file baseline describe block. - Tests for the helper, the shared module, and the generator (incl. round-trip and fault-injection cases). Refs #1074. Part 1 of 3; PR 2 swaps enforcement, PR 3 covers the agent test. * test(#1074): regenerate workflow baseline after Update-branch merge with next The 'Update branch' merge (652a916b) pulled in next's update.md change (#1090) without regenerating the snapshot, leaving the per-file baseline stale by one file. Re-ran `npm run size:baseline` so the committed baseline matches the merged workflow files. Refs #1074. --------- Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
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, Gemini 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, Gemini 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, Gemini 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 your first project:
/gsd-new-project
New here? Follow Your first project for a guided walkthrough from install to first shipped phase.
Documentation
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.