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* fix(#4294): reserve a full progress bar for 100% and give the render half one owner Six call sites each carried `Math.round((percent / 100) * width)` inline, and every copy rounded to a full bar before the percent reached 100: from 95 up at width 10, from 98 up at width 20. A project at 19/20 plans drew the same bar as a shipped one beside a number that said otherwise, and an out-of-range percent threw `RangeError` from the unguarded `'░'.repeat`. ADR-3180 Decision 7 gave the completion-RATIO derivation one owner (`clampPercentFromFraction`). This gives the RENDER half the same: `progressBarFilledCells` / `renderProgressBar` in phase-lifecycle.cts, with the `progress` table and bar renderers, the stats renderer, the gsd2 import writer, and #4231's `formatProgressMachineSegment` (which now serves both STATE.md writers) all drawing through it. Contract: below 100 the fill is held one cell short of the width, so only the saturating percents move (95-99 at width 10, 98-99 at width 20) and every other value in 0-100 renders as before — pinned by an exhaustive comparison against the legacy formula at both widths. Null / non-finite renders an empty bar; out-of-range is clamped, never thrown. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012hbFn24VWaxJBw8DUWjAmU * chore(#4294): set changeset fragment pr to 4473 * docs(#4294): correct the pre-fix inline call-site count to five The kernel's doc comment said SIX call sites carried their own `Math.round((percent / 100) * width)`. The base tree has five: three in `commands.cts` plus one each in `gsd2-import.cts` and `formatProgressMachineSegment`, the latter two using `/ 10` with the width already substituted (`pct` and `clamped` respectively). The six is #4294's count of consumers -- it counts `cmdStateUpdateProgress` and `syncCore` separately, but #4231 had already routed both through `formatProgressMachineSegment` (as it does `applyPostSyncPreservation`), so by this branch's base they share one copy. The comment now states the tree's count and records where the six comes from, so neither number reads as an error later. Comment-only; no behaviour change, and no change to compiled output. --------- Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com> Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
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.