* test(#2946): milestone complete unstarted-phase guard fails open on STATE desync Row 1 of the test matrix: the regression test that fails first. Adds seven cases to tests/milestone.test.cjs covering the desync, absent, no-file, --force-override, mismatch-WARNING, fresh-project-noop, and sentinel-skip behaviors. RED on next: the guard's entire scan is nested inside `if (stateVersion && stateVersion === version)`, so any STATE.md milestone: value that does not exactly equal the version argument skips the scan with no warning — functionally an implicit --force on a one-way-door operation. * fix(#2946): run milestone complete unstarted-phase guard independent of STATE The entire ROADMAP phase-directory scan was nested inside `if (stateVersion && stateVersion === version)`, so any STATE.md milestone: value that did not exactly string-equal the version argument — a desynced value, or no milestone: field at all — skipped the scan with no warning, functionally an implicit --force. The operation the guard fronts is a one-way door: ROADMAP.md and REQUIREMENTS.md are archived and phase directories are MOVED into .planning/milestones/<version>-phases/. The scan was already driven by the version argument through getMilestonePhaseFilter / extractCurrentMilestone; the STATE match was a redundant second gate that shadowed and broke it. Decouple: the scan now runs whenever --force is absent, and a present-but-mismatched STATE milestone: field emits a WARNING naming both values so the suspicious condition is visible rather than silent. A fresh project with no Phase headings in the scoped slice still yields an empty scan (no false positives) — the intent the STATE-match short-circuit was reaching for, now achieved by the scan itself. * docs(#2946): document milestone complete --force, --dry-run, and the unstarted-phase guard The CLI-TOOLS reference signature omitted --force and --dry-run entirely, and neither the unstarted-phase guard nor its override was documented anywhere user-facing. Add a flags table and a factual guard description to the Reference page (CLI-TOOLS.md), and a practical guard note to the /gsd-complete-milestone How-to (COMMANDS.md) covering what to do when the guard fires and the new STATE-mismatch WARNING (#2946). American English per CONTRIBUTING.md language policy. * fix(#2946): emit STATE-mismatch WARNING as JSON in --json-errors mode Follow-up to the guard decoupling: a structured caller using --json-errors parses stderr line-by-line as JSON, so the plain-text WARNING would break such a parser. Honor getJsonErrorMode() and emit a structured JSON object ({ ok, level, message }) in that mode, plain text otherwise — mirroring io.cts error()'s JSON shape. Addresses the isolated-review observation (~45% but credible, since --json-errors is a documented CLI flag). * fix(#2946): address review — drop JSON-mode WARNING scope creep, tighten test assertions Standards + spec review findings (code-review two-axis + isolated adversarial): 1. The --json-errors JSON WARNING branch (commit dee719404) was scope creep the issue never asked for, AND emitted ok:true for a suspicious-condition warning (a category error — a stderr JSON parser keying on ok would treat the suspicious state as success), AND its comment falsely claimed to mirror io.cts error()'s {ok:false,reason,message} shape. Dropped: the WARNING is now plain-text stderr only, matching the existing [gsd-tools] WARNING convention (state.cts). The issue asked for 'at minimum warn', not a structured JSON surface. 2. The WARNING test asserted on /WARNING/ regex (raw-text matching on stderr prose). Tightened to assert on the stable operator-facing tokens — the WARNING: marker and both version literals the operator must see — not the surrounding formatter prose. Added a paired negative test confirming no WARNING is emitted for an absent milestone: field (a missing declaration is a normal fresh-project state, not suspicious drift). * fix(#2946): sanitize STATE milestone value before stderr WARNING interpolation Security review (minor): stateVersion is read from a user-controlled file (STATE.md) and is not validated like the CLI version arg. Sanitize before interpolating into the WARNING — strip ANSI/control chars (/[\x00-\x1f\x7f]/g -> '?') and truncate to 80 chars — so a corrupted or hostile STATE.md cannot echo terminal escapes or secret-looking strings verbatim into a CI log or terminal aggregator (CONTRIBUTING.md security: secret-looking values in stderr). version is already constrained to [A-Za-z0-9._-] by ARCHIVE_VERSION_LABEL_RE upstream, so it needs no sanitization. * test(#2946): correct stale fixtures that relied on the guard being silently disabled Four pre-existing tests broke under the #2946 fix because their fixtures only passed thanks to the bug — the unstarted-phase guard was skipping on STATE mismatch, so fixtures with missing or non-matching phase directories slipped through. The tests exercise version-forwarding / version-scoping, not the guard, so give them legitimate directories: - milestone.test.cjs #3043: dirs were '103.old'/'104.old'/'108.new' (dot), which phaseTokenMatches rejects — renamed to hyphen form. The v3.6 stats scoping still yields 1 phase (getMilestonePhaseFilter scopes correctly); the guard now sees all three phases as having directories. - milestone-archive.test.cjs 'returns version in response data': ROADMAP listed Phase 1 but no directory was created. Added 01-foundation so the scan is satisfied. Per CONTRIBUTING.md, test-fixture corrections land as their own test: commit, not bundled into fix: (release hotfix cherry-pick routes by prefix). * chore(#2946): backfill changeset PR number 3081 --------- 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
- 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
- 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
- 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
- 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 - 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