36375513b9
* feat(#3840): generate docs/FEATURES.md from per-feature fragments docs/FEATURES.md was hand-maintained, and every feature PR wrote into two shared mutable cells: the '### N.' heading whose integer was hand-allocated at authoring time, and the hand-maintained table of contents. Concurrent PRs all picked the same next integer, and two PRs adding differently numbered features still collided on the TOC. #3831 was renumbered 165 -> 166 -> 167 -> 168 across successive rebases, each collision also costing a full matrix verification run because the sha-keyed pass marker dies with the rebase. Mechanism: one fragment per feature at docs/features/<slug>.md carrying id/title/group (and an optional order) in frontmatter, consolidated by scripts/gen-features.cjs --write|--check into a marker-delimited region of docs/FEATURES.md that holds BOTH the TOC and every section body. Group headings and their order are derived too - a group sorts by its lowest-ordered member - so there is no shared registry to edit either; optional per-group prose lives in docs/features/_groups/<slug>.md. A contributor adds exactly one new file. Wired into regen:derived and lint:generated-sync alongside the eight existing generators, matching gen-adr-index.cjs's CLI shape and typed-REASON reporting. Migration froze all 168 existing numbers verbatim: identical section set, identical order, identical bodies. Two defects found in the tree are fixed inline rather than carried forward - the '## Related' block had been spliced into the middle of the document, orphaning §142's Reference line, and four inbound anchors were already broken on next (FEATURES.md#runtime-identity in two files, and #143-spec-phase-edge-completeness-probe off by one). Since the repo has no link checker, --check now validates every inbound FEATURES.md#anchor by resolved target, so that class cannot ship silently again; locale FEATURES.md files resolve elsewhere and stay out of scope. Refs #3840 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3840): carry upstream §69 delta into its fragment and harden the generator Review found section 69 missing '[--strict]' and REQ-STATE-05/06 versus origin/next. Root cause was a stale base, not extraction loss: those lines landed in394bf384b(#3844) AFTER this branch forked at63abcface, and 'git diff63abcfaceorigin/next -- docs/FEATURES.md' is exactly that hunk. Merging origin/next auto-applied the hunk into the GENERATED region, which --check immediately reported as stale; the delta is now carried in docs/features/statemd-consistency-gates.md and regenerated from there. --write is now fail-closed. It previously rendered the region even with violations outstanding, warning only on stderr and exiting 0, so a '--write && git commit' chain could commit a FEATURES.md carrying two colliding sections. It now refuses and exits 1; --force is the explicit override and says so in the report. The test that pinned the old behavior now pins the refusal, plus the --force override and its scoping. Marker forgery is rejected at two layers. A fragment body containing '<!-- FEATURES:START' or '<!-- FEATURES:END' is a typed body_forges_region_marker violation (fragments and group notes alike), and spliceIntoFeatures anchors the end boundary with lastIndexOf instead of indexOf, so a marker that reaches the document by any other route can only make the generated region grow, never shrink. Matching is on marker PREFIXES, so a decorated variant comment cannot slip past. Symlinked corpus entries are refused with a typed dirent_not_regular_file rather than read. A fork PR could otherwise commit docs/features/evil.md as a symlink to any readable path and have the generator inline those bytes into the committed docs/FEATURES.md on the next regen. Equivalence re-verified with a method that cannot cancel out. The first check extracted both operands with the same body-normalising helper, so anything that helper dropped was dropped on both sides. The replacement runs two independent passes: a global content-line multiset diff with no per-section logic at all (0 gained, 19 lost, all 19 the stale hand-written mini-TOC links this change deliberately deletes), and a per-section byte-exact body diff carrying a coverage assertion that fails loudly per file when the extractor accounts for fewer lines than the file contains. That assertion caught two blind spots in the checker itself. 168/168 sections present, order identical, one intended body difference (§142 regains the Reference line orphaned by the misplaced '## Related' block). Refs #3840 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * chore(#3840): backfill changeset PR number Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: sim <sim@local> Co-authored-by: Claude Opus 5 <noreply@anthropic.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.