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* test(#3204): failing-first suite for the clobbered phase count A project declaring six phases with four phase directories on disk had state.record-session write progress.total_phases: 4 — #2828 regressing at 1.9.1, reported in #3204 with a deterministic reproduction. Before the fix in the following commit, these rows FAILED (wrote 4, expected 6): a flat roadmap carrying `## Progress`; one carrying `## Overview` and `## Phase Details`; the CRLF variant of the first. Two more, found by adversarial review and added after the first fix attempt, failed against that attempt: structural headings interleaved among flat phase headings, and this repo's own bundled-template shape (a `## Phases` wrapper around a single nested milestone). The #1761 control — sibling milestone sections must keep falling back to the disk count — passes both before and after, so the fix has something it must not break. Assertions read progress.total_phases through the product's own frontmatter parser via `state json --raw`, never a regex over STATE.md. Rows 12 and 13 are hostile: a phase heading carrying a version token, and a version heading inside a fenced code block; neither may count as milestone sectioning. Refs #3185, #3204 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3204): milestone sectioning is vocabulary, not heading position buildStateFrontmatter chooses total_phases between the ROADMAP's declared phase count and the on-disk directory count, and refuses the roadmap count when hasMilestoneSectioning says the document is milestone-sectioned — because a whole-document count would then conflate sibling milestones (#1761). That predicate returned true for ANY non-Phase level-2/3 heading, so a flat roadmap carrying an ordinary `## Progress` was called sectioned and the disk count clobbered the declared one: six declared phases, four directories, total_phases written as 4, converging on the truth only once the last directory happened to exist. That is #2828 regressing at 1.9.1, and it came from this epic — #3184 replaced state.cts's hand-rolled #2828 guard with this predicate, and the replacement is strictly more permissive than the guard it retired. Three position-based models were tried and all failed, because position does not carry milestone-ness: - any non-Phase heading (shipped) — over-detects, giving #3204; - strict nesting/ownership — misses same-level siblings, regressing #1761, and false-positives on the bundled template, where `## Phases` wraps a single `### v1.1`; - adjacency — reproduced live: `## Overview` and `## Notes` interleaved among six phase headings are two owning candidates, so a 6-phase roadmap with 2 directories wrote 2. A heading is now a milestone heading iff it is a non-Phase heading carrying a milestone signal: a version token, a status marker, or the word Milestone. Sectioning means two or more, since one cannot conflate siblings. Known limit, recorded in the doc comment rather than hidden: two milestone sections carrying none of those three signals are not detected. Also drops buildStateFrontmatter's local dedup-key regex, flagged in-source as diverging from the canonical token rule, for phaseKeyFromDir — the remainder of #3185, since #3222 had already routed the enumeration itself through listMilestonePhaseDirs. #1514, #2445 and #3017 are preserved untouched. Closes #3185 Fixes #3204 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * docs(#3185): changeset, glossary entry and ADR status for the phase-count fix CONTEXT.md's Roadmap Parser Module entry never named hasMilestoneSectioning, so the predicate whose semantics this change reverses had no glossary presence at all — a PR gate for a module/seam change. Added, covering the vocabulary model, the three position-based models that failed, and the residual limit. ADR-3180 recorded the fifth enumeration copy as unowned in four places. It is owned now. Amendment 4's scope table row 1 also carried an error worth keeping visible rather than rewriting: it claimed Phase 3 merged without routing the state writers, when #3222 had in fact routed the enumeration — the audit read Amendment 3's silence about the symbol names as absence of the work. The real gap was the trust discriminator one layer above, which is what #3204 was. Changeset is Fixed and leads with the symptom a user sees — a phase count that shrinks to match how many phase directories happen to exist yet — and carries the known limit forward rather than leaving it in a source comment. Refs #3185, #3204 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3185): stop quoting the retired phase-token regex in a comment The remote runner failed tests/phase-id-drift-guard.test.cjs: the comment explaining that the local dedup regex had been replaced by phaseKeyFromDir quoted that regex verbatim, and scripts/lint-phase-id-drift.cjs scans for the literal token without caring whether it sits in code or in prose. That is the guard being right, not over-eager — a quoted pattern is one paste away from being live again, which is exactly how the copy it replaced spread. Described in prose instead. Worth recording: this guard is check:phase-id-drift, which lint:ci does not run — it is enforced by tests/phase-id-drift-guard.test.cjs. A green lint:ci is therefore not evidence the drift guards pass. Refs #3185 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * chore(#3185): backfill changeset PR number (#3230) 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 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