a4a02a7a01
* test(#2874): add failing-first gate for the executed-plan return Four rows from the matrix's red-first order. E3 pins the one early return, for the opencode family, where a void-shaped hole would otherwise survive unnoticed. E13 sweeps every runtime in the registry - enumerated from the registry rather than hardcoded, so a runtime added later cannot slip past. F2 proves absence of real filesystem contact rather than merely that the happy path ran, which is the difference between a complete seam and a partial one. G1 and G3 are the additive guard and must be green before and after. G3 deliberately leaves the two existing adapter test doubles untouched: if this change required editing them it would not be additive, and the acceptance criterion would be unmet. No production code. All 19 runtimes install without throwing today, so E3 and E13 fail on the undefined comparison alone. Refs #2874 * feat(#2874): return the executed plan and route install IO through a seam installRuntimeArtifacts returned void, so its correctness was observable only by re-reading disk. It now returns what it executed - per kind, per scope - including on the combinedFamilyInstall path, which was the one early return where a void-shaped hole would have survived unnoticed. Failure still throws rather than becoming an ok:false return, so control flow is unchanged for both existing callers. A best-effort cleanup that fails is still swallowed, but is now visible in the returned value rather than silently absent. The fs seam is ambient rather than threaded. Explicit deps through install-profiles and the 3000-line conversion module was impractical; the tradeoff, the synchronous-only re-entrancy assumption, the restore guarantee and the partial-adapter fallback trap are all documented at the seam. findInstallSourceRoot and its sibling stay unrouted by design - they locate the package's own source, not the install destination. readCmdNames keeps a second implementation because the standalone CLI that owns the original cannot require the compiled adapter without a build-order dependency on its own output. A parity test fails if the two ever disagree. Refs #2874 * chore(#2874): gitignore the new build artifact install-fs-adapter.cjs is tsc output from src/install-fs-adapter.cts, not a tracked source file. It was added to eslint's ignore list but not to .gitignore, so it landed as a tracked file - the third time this step of the new-.cts ripple has been missed on this epic. Refs #2874 * fix(#2874): close two seam leaks and correct a false comment A correctness review found the seam still leaked in two places, both subtler than the three already closed. readGsdCommandNames was routed when it should not have been: it reads the package's own commands directory, which a destination-fake is never seeded with, so under a fake adapter it returned an empty or wrong roster instead of failing loudly. It now reads real fs, matching the precedent already documented for findInstallSourceRoot. cleanupStagedSkills ran raw rmSync from a process exit handler, which is real filesystem work deferred past the point where withInstallFs has restored - the one thing the synchronous-only contract exists to exclude. Staging now captures the adapter that created each directory and cleanup replays it, so a real install cleans up exactly as before and a fake-staged path never reaches the real filesystem. Also corrected a comment claiming the migration reads were an unrouted, untested residual gap. They are routed and exercised; a comment understating the seam is as corrosive as one overstating it in a module whose trust rests on being honestly documented. Refs #2874 * test(#2874): migrate the exemplar group and cover the matrix AC3's exemplar migration lands in place: the qwen install group now asserts skills and agents destinations from the returned plan in one deepStrictEqual instead of probing the filesystem for each. Nine facts the old probes established were enumerated first. Two moved to the value assertion; seven were retained deliberately - per-file SKILL.md existence, the VERSION file written outside this function, the manifest content, and the post-uninstall absence checks all sit outside the plan's per-kind contract. A migration that quietly asserts less looks like a win and is a regression, so the enumeration is the guard rather than the line count. Also implements the rest of the matrix: the executed-plan shape, adapter failure modes, the security-boundary rows including a fake that cannot certify an install the real filesystem would refuse, cleanup visibility, and two seeded property tests. Only the two external CI gates are left unticked, because self-certifying them would be a claim rather than a check. Refs #2874 * fix(#2874): restore streaming hashes and derive F2 from the boundary rule The checkpoint found three things reasoning had missed. sha256File had been converted from raw-fd streaming to a single readFileSync on the assumption that GSD artifacts are never large. A test named for exactly that contract already existed and went red. Streaming is restored, now routed through the adapter, which gains openSync, readSync and closeSync. The contract was the specification; the assumption was not. Three existing tests inject faults by monkeypatching real fs. They broke because mkInstallTempDir stopped calling real mkdtempSync, not because of any binding subtlety - the real adapter was already late-bound. It now calls the real function when no fake is injected, so a monkeypatch applied after import is still seen and the additive contract holds. F2 poisoned real fs by method, so a deliberately unrouted package-source read failed a correct design. It now poisons by path: destination IO is forbidden, package-source IO is allowed and positively asserted. The claim was always zero real destination IO, and the test now derives from that rule instead of coincidentally matching it. Refs #2874 * docs(#2874): add the contributor how-to for plan-based test migration The phase gate caught a real gap. The docs plan was Reference plus Explanation only, and every CI check would have passed, because the docs-required lint only verifies that some file under docs/ moved. But this phase exists to demonstrate a pattern for follow-on work, and that work is other contributors migrating probing test groups. The sequence has two live traps - a partial fake silently falls back to real fs, and the seam is ambient and synchronous-only - plus one discipline nobody infers: enumerate the facts before converting, or you assert less and call it a win. The page carries the qwen migration's arithmetic, nine facts enumerated and only two converted, because a reader seeing only the diff would reasonably conclude the pattern is to replace probes wholesale. No locale mirrors: none of the four carries any contributor-only how-to, so a single translated file would manufacture parity rather than provide it. Refs #2874 * chore(#2874): backfill changeset pr number * test(#2874): normalize both sides of the G1 tree comparison G1 failed on Windows only, deterministically on both shards. The defect was in the test helper, not production. _computePathPrefix posix-normalizes the resolved config dir unconditionally, so on Windows the path embedded in every emitted SKILL.md body is forward-slash form. hashDirTree stripped against the raw backslash path from mkdtempSync, so the substring never matched and each install's unique temp suffix stayed baked into every file - all fifteen skill bodies hashed differently for two runs that had written identical bytes. Both sides are now normalized unconditionally rather than gated on path.sep, matching the rule this repo already records: backslash paths arrive on Linux too. Production code is untouched and was verified correct. Normalizing this away on the production side would have hidden a real portability bug if one had existed. Refs #2874 --------- Co-authored-by: sim <sim@local>
GSD Core documentation
Documentation is organised into four quadrants: tutorials help you learn by doing, how-to guides solve specific tasks, reference states authoritative facts, and explanation explores concepts and design decisions.
Language versions: English · Português (pt-BR) · 日本語 · 简体中文
Tutorials
- Your first project — install to first shipped phase, one guaranteed path
- Onboarding an existing codebase — bring GSD Core to a brownfield repo
- Build your first capability — author a tiny declarative capability and watch it act in the loop
- Install your first capability — install a third-party capability end-to-end: consent, verify, check for updates, remove
How-to guides
- Install on your runtime — runtime-specific install steps for all 16 supported runtimes
- Install a minimal GSD and add skills later — install only the core skills, then grow the surface with profiles and
/gsd-surface - Attach a plugin-provided skill to a GSD agent — use the
global:plugin:skillentry form to load Claude Code plugin skills into agent prompts - Discuss a phase — capture implementation decisions before planning begins
- Resolve edge-coverage findings — turn the spec phase's surfaced domain-boundary edges into covered, dismissed, or backstopped spec decisions
- Resolve prohibition findings — turn the spec phase's surfaced must-NOT constraints into resolved, dismissed, or deferred spec decisions
- Resolve an unreachable-workflow finding — wire or fully sweep a shipped workflow that no command, agent, or skill references
- Resolve unreachable-guard findings — fix shell guards whose fallback arm cannot run, and tell "nothing to report" apart from "could not look"
- Resolve an ESLint glob-coverage finding — bring a source file that matches no lint rule under coverage, or record a reasoned exemption
- Plan a phase — run research, decompose work, and verify plan quality
- Execute a phase — run plans in parallel waves with fresh-context subagents
- Verify and ship — walk through completed work, diagnose failures, and create the PR
- Catch complexity before it compounds — enable the post-execute refactor hook, read a proposal's score vs. anchor delta, and accept or decline it
- Run phases autonomously — use autonomous mode for unattended phase execution
- Handle quick and fast tasks — use
/gsd-quickand/gsd-fastfor ad-hoc work outside the phase loop - Configure model profiles — switch between quality, balanced, and budget model tiers
- Control which host runtime GSD reports — read the
agent_runtimeladder, understand what host detection looks at, and pin the runtime when detection is not what you want - Set up cross-AI review — configure a second AI to review code produced by the primary agent
- Work in parallel with workstreams — run independent lines of work simultaneously using workstreams
- Isolate work with workspaces — use workspaces to sandbox experimental or risky changes
- Debug a failed execution — diagnose and recover from broken or incomplete phase execution
- Interpret scope-conformance warnings — read the advisory the worktree-wave merge emits when a plan branch commits outside its declared scope
- Interpret install-shadow warnings — read the advisory GSD Core emits when a
/gsd-*trigger is installed at both scopes and one silently wins, and tell "nothing to report" apart from "could not look" - Interpret
state validateresults — read thescopereason codes and tell "nothing to report" apart from "could not look" - Spike and sketch — use
/gsd-spikeand/gsd-sketchfor exploratory work before committing to a plan - Design a UI phase — use the UI phase loop for frontend and visual work
- Develop a Capability for GSD 1.5+ — add feature Capabilities, hook fragments, and registry entries
- Ship a reviewer lane in your capability — declare a
reviewerbody so/gsd-reviewdiscovers, invokes, and renders your external review CLI or model endpoint - List your reviewer lane in the registry — publish a lane you have built to the Reviewer Lane Registry so other people can find and install it
- Take over a capability or EoS integration — assume maintainership of an existing third-party capability, reviewer lane, or EoS host integration through a handoff, an adoption fork, first-party absorption, or a de-listing
- Add or update a host's integration — set a host's documentation-sourced
runtime.hostIntegrationaxes (ADR-1239 Phase A), with theundocumentedsentinel rule - Migrate an install test to the executed plan — convert an
fs.existsSync-probing install test group to a value assertion againstinstallRuntimeArtifacts's executed-plan return, and test against a fake fs adapter - Turn a capability off (and keep it off) — disable a capability via the surface, or gate individual hooks off without removing the capability
- Drive GSD from a tracker issue — start a phase from a GitHub, Linear, or Jira issue
- Migrate from GSD 2 — upgrade an existing GSD 2 project to GSD Core
- Update GSD — re-run the installer to pick up the latest release
- Clean up get-shit-done-cc — remove leftover old-package artifacts that cause a spurious
⬆ /gsd-updateindicator after migrating to@opengsd/gsd-core - Fix the worktree base-mismatch (exit 42) error — resolve the branch-divergence condition that halts parallel phase execution
- Recover and troubleshoot — fix common problems, rebuild context, and uninstall
Reference
- Commands — every command with flags and examples
- Configuration — full config schema, model profiles, git branching strategies
- CLI tools —
gsd-tools.cjsprogrammatic API for workflows and agents - JSON error mode —
gsd-toolsfailure channels: faults (stderr, exit 1) vs degraded results (stdout, exit 0), and the reason-code taxonomy - Features — complete feature index
- Inventory — installed skills and surface map
- STATE.md schema — field-by-field reference for
.planning/STATE.md - CONTEXT.md schema — field-by-field reference for
.planning/phases/<N>/CONTEXT.md - PLAN.md schema — field-by-field reference for
.planning/phases/<N>/PLAN.md - Planning artifacts — all
.planning/files and their roles - Review and verification capabilities — code review, security, and Nyquist capability ownership and hook contracts
- Gate predicates — canonical specification of the phase-gate predicate vocabulary
- Capability matrix — generated catalogue of every capability's role, tier, extension points, hook kinds, and
engines.gsd - Capability manifest — the full
capability.jsonschema and validation rules gsd capabilitycommand — install / update / remove / list reference for third-party capabilities- Workflow fragments — in-file
<!-- gsd:section -->marker grammar for fragmentizing workflow markdown at emission time - Reviewer Lane Registry — generated catalogue of third-party reviewer lanes, with their flags, transport, and install commands
Explanation
- Context engineering — how context rot forms and how GSD Core prevents it
- The phase loop — design rationale for the Discuss → Plan → Execute → Verify → Ship cycle
- Multi-agent orchestration — how subagents are spawned, scoped, and coordinated
- Security model — trust boundaries, permissions, and safe automation
- The capability trust model — why third-party capabilities are gated by consent + integrity + reversibility, not a sandbox
- How overlay capabilities compose — why first-party always wins and how the loader resolves precedence, conflicts, and fail-open load-failure warnings
- Architecture — system architecture, agent model, and data flow
- The Embeddable Orchestration System — one public, versioned contract for embedding GSD across many hosts
- Discuss modes — assumptions mode vs interview mode for
/gsd-discuss-phase - Context monitoring — context window monitoring hook architecture
- Issue-driven orchestration — recipe for driving GSD from a tracker issue using existing primitives
Related
- What's new in 1.7.0 — curated highlights of the 1.7.0 release
- Root README — landing page, quickstart, and documentation overview
- Changelog — release history