* chore(#3560): delete two unreachable workflows, gate reachability in lint discovery-phase.md and plan-milestone-gaps.md shipped to all 19 runtime install trees with no command, agent, or skill referencing them. plan-milestone-gaps' command was deleted by #2790 and the workflow was left behind; discovery-phase's own header claimed a caller in plan-phase.md's mandatory_discovery step, and that step does not exist — plan-phase.md contains zero occurrences of "discovery". docs/INVENTORY.md asserted discovery-phase.md was an alternate entry for /gsd-new-project. new-project.md never referenced it. The row and the matching note sentence are removed across all five locales rather than corrected. Adds rule 6 to lint-command-contract: every shipped workflow must be reachable from a loader, walking the transitive closure over the three reference shapes this repo uses. The closure seeds ONLY from commands/agents/skills, so a workflow that references only itself and a pair that reference only each other are both correctly reported rather than satisfying themselves; a visited set makes reference cycles terminate. The measure is a mention in a LOADER — docs/ and install-tree fixtures deliberately do not count, because scan.md proved a file can be documented and shipped while entirely unreached. Ships blocking, not report-only: #3561 is in this branch's base, so the tree reports 0 unreachable from the start. Closes #3560 * test(#3560): drive rule 6 end-to-end, sweep a stale allowlist, update ADR-0002 Review findings. Rule 6 had no end-to-end coverage: the tests exercised the pure closure with in-memory data, so the wiring — file collection, exit code, diagnostic — was unproven, and #3560's acceptance list explicitly wants a fixture showing the rule FAILS on a planted orphan. Adds an optional --root to lint-command-contract (default behavior unchanged) and four tests driving the real CLI through the process seam against a temp fixture: clean=0, planted orphan=1, orphan referenced only from docs/=1, orphan reachable transitively=0. The docs/ case is what pins the Goodhart defense — a mention outside a loader must not confer reachability. Deletes two tests that were byte-identical to a third and could not assert anything loader-specific, since the closure is source-agnostic by design; that distinction lives in the lint script's file collection and is now covered above. Removes a stale ALLOWLIST entry for discovery-phase.md in planner-language-regression — the exact sweep-miss class rule 6 exists to catch, found in the PR that adds the rule. ADR-0002 described five per-file frontmatter checks; rule 6 is a repo-level reachability graph, so the Decision section now says so. Refs #3560 * test(#3560): cut the bug-3298 test pin on the deleted plan-milestone-gaps workflow The remote runner went red with four failures: tests/phase.test.cjs asserted the plan-milestone-gaps workflow exists and checked its mkdir patterns, so deleting the file broke the test that pinned it. This is the fence the epic describes — the content-sync test IS what keeps an unreachable file alive — and cutting the coupling is what makes the deletion safe. Removes only that arm. The bug-3298 block guards three workflows against phase-dir prefix drift; the import and add-backlog arms and both shared mkdir-pattern helpers are untouched. Worth recording where the sweep failed: my reachability walk covered commands, agents, skills, gsd-core and docs, and lint-removed-but-needed covers .github/workflows, gsd-core, docs and package.json. Neither looks at tests/, so a test-pinned deletion is invisible to both and surfaces only on the remote runner. The how-to added by this PR names that gap explicitly so the next deletion searches tests/ by hand. Refs #3560 * docs(#3560): add a how-to for resolving unreachable-workflow findings * chore(#3560): backfill changeset pr number to 3564 --------- Co-authored-by: sim <sim@local>
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, 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.