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* test(#2704): failing-first coverage for ADR link resolution and H1 status brackets Binds the gate to two assertions it does not yet make: every relative markdown link under docs/adr/ must resolve, and an H1 trailing status bracket must agree with the Status: field instead of being silently stripped. Covers all 51 rows of the phase test matrix across two altitudes - the pure extractLinks/maskCode IR for fence and inline-code-span boundaries, hostile input and the fast-check totality properties, and the real CLI verdict for the end-to-end classes. Includes the DEFECT.GENERATIVE-FIX parity test that iterates the exported STATUSES array so a sixth status is covered the day it is added. * feat(#2704): resolve ADR documentation links and compare H1 status brackets The ADR gate validated naming, relation symmetry and index freshness but never resolved a link target, and it stripped an ADR's trailing H1 status bracket for display rather than comparing it against that ADR's own Status: field. Both classes were structurally invisible: #2691 found five dangling references by manual audit roughly a year after they were introduced, one of which reached the published npm payload, while CI reported green throughout. Both are now assertions on the same --check path, using only node:fs and node:path - no dependency and no subprocess. Fenced blocks and inline code spans are masked before scanning, because markdown does not render a link inside code. That is not a policy choice: the corpus contains exactly two such sequences today and both are ordinary JavaScript. Masking preserves length and column positions so findings still name a real line. Resolution is case-exact on every platform - a link that resolves only through macOS or Windows case-folding still 404s on github.com and still fails the Linux lane - and a destination resolving outside the repository is reported before any filesystem call is made. Also single-sources two duplicated surfaces this change would otherwise have extended: the H1 bracket vocabulary (a second hand-written copy of STATUSES with nothing asserting agreement, a DEFECT.GENERATIVE-FIX instance) and the docs/adr directory traversal. Two tests added by #2691 that reimplemented link resolution and bracket comparison inside the test file are removed for the same reason; the corpus assertion is now made by running the real gate against the real corpus. * fix(#2704): reject symlinks that leave the repository and linearize code masking Four defects from the isolated adversarial security review, plus one it noted. BLOCKER - a symlink defeated path containment. path.relative(ROOT, abs) is purely lexical, but the case-exact walk then calls readdirSync, which follows symlinks at the OS level: a contributor-committed docs/adr/x -> /etc together with a link through it passed containment and listed the real external directory, and a wrong-case probe echoed a real external filename through the "Did you mean" hint into publicly-readable fork-PR logs. Every segment is now lstat'd before descent; a symlink is realpathed and re-checked against realpath(ROOT) - realpath on both sides, so a root under /var does not produce false escapes - and an escape emits no hint and reads nothing further. The same rule now governs which FILES are read: an ADR entry that is a symlink out of the repository is excluded and reported rather than parsed, closing the vector this change had widened by newly reading README.md, naming-violation files, and full bodies rather than only header fields. MAJOR - inline-span masking rescanned the line remainder per backtick run, roughly O(n^1.6) on adversarial input: 1.76s for an 800KB line. Rewritten as a single linear pass pairing runs through forward-only per-length cursors. Same input now takes 3.31ms, with behavior unchanged. MINOR - an unreadable or broken entry threw, and the generic handler wrote a raw stack trace carrying absolute CI paths to stderr. The scan is now fault-tolerant and reports excluded entries as ordinary violations. The status vocabulary is escaped before being interpolated into a dynamic RegExp - defence-in-depth, not a live bug. The containment predicate had reached three hand-written copies while fixing this; it is now the single escapesRoot() helper used by all four call sites. * feat(#2704): add a --json report so the gate's tests assert on typed values Maintainer-directed addition. CONTRIBUTING.md's "Prohibited: Raw Text Matching on Test Outputs" requires that a system under test producing text also expose a structured intermediate representation, and that tests assert on that IR rather than on rendered prose. This gate had no such surface, so its verdict tests matched on stderr. --json runs exactly the same validation as --check and writes a report to stdout with the same exit code, following the frozen-REASON-enum pattern already used by verify-reapply-patches.cjs. Every violation carries a stable reason code plus the fields a consumer needs, so nothing has to pattern-match an error message. Adding a reason stays three coordinated changes - the enum, the emitting site, and the test locking Object.keys(REASON).sort(). The human output is unchanged, deliberately: a large pre-existing suite asserts on it and migrating that is not this PR's concern. Verified by running the pre-change and post-change scripts against an identical violating corpus and diffing their stderr - character-for-character identical. This PR's own verdict tests now assert on parsed --json. Absence checks improve the most: "no bracket violation" is now a reason-code predicate rather than a negative regex over prose, which could pass for the wrong reason. The security assertions were strengthened rather than translated - no leaked filename may appear in ANY field of the serialized report. Unknown flags are now rejected instead of silently falling through to printing the index. * test(#2704): fix the status-parity fixture and guard hooks/dist before overlay builds Two failures from the matrix run of 79b29909. The status-parity fixture was mine. It built, per status token, an ADR whose H1 bracket and Status field both carried that token - but Superseded carries an obligation beyond the bracket: it must name its successor as a file link and be symmetric with it. The fixture declared a bare Superseded, tripped that unrelated invariant, and the test reported a bracket-parity failure for a reason that had nothing to do with bracket parity. The fixture now satisfies each token's own obligations in both the agreeing and contradicting corpora, derived from the status actually declared rather than special-cased on one name, so a future token carrying obligations is handled rather than silently skipped. The second failure was not mine but is fixed here rather than deferred. mcp-catalog-parity.install.test.cjs hardlinks hooks/dist/* while building its overlay, but hooks/dist is a gitignored build artifact produced only by build:hooks. The suite had no guard, so it passed only when some other suite happened to build it first - an execution-order dependency, which is why it failed on node22 and passed on node24 for identical code. install.test.cjs already documents this exact hazard and guards it. Six behaviorally identical copies of that guard existed across three files. Rather than add a seventh, they are now one canonical tests/helpers/hooks-dist.cjs - idempotent and bounded by the shared BUILD_TIMEOUT_MS class norm - which is the same single-sourcing this PR applies to the ADR gate itself. * docs(#2704): add a how-to for contributors the ADR gate rejects The reference and explanation quadrants were covered by Lifecycle rules 5 and 6, but the task-oriented one was thin: a contributor meets this gate because it failed on their PR, under pressure, and the rules told them what is checked without telling them what to do about it. Adds the command to reproduce the CI failure locally and a message-to-remedy table covering every reason code that can be hit - unresolved target, wrong case with the did-you-mean hint, repository escape, symlinked ADR file, bracket contradiction - plus the backtick escape hatch for illustrative links and the caveat that indented code blocks are not skipped. The table is itself written in backticked inline code, so the gate skips it: the escape hatch demonstrated on the page that documents it. * chore(#2704): backfill changeset PR number pr:0 placeholder replaced with the real PR number now that #3266 exists. --------- 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
- Interpret scope-conformance warnings — read the advisory the worktree-wave merge emits when a plan branch commits outside its declared scope
- 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