* 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>
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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 - 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