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* refactor(#3183): route live-plan counting through scanPhasePlans scanPhasePlans becomes the sole owner of the live-plan derivation. Twenty-one independent re-derivations across seven modules now route through it, and scripts/lint-plan-count-drift.cjs reports zero, scanning the whole repo rather than an allowlist (ADR-3180 Decision 4a). The epic scoped this at three copies. A whole-repo guard found twenty-six sites across nine files, so Phase 1 absorbs every live-plan re-derivation and Phase 3 narrows to window plus sentinel enumeration. Two sites are exempt with a documented reason rather than a bare allowlist: audit.cts scans one quick task's own directory for a single completion record, and gsd2-import.cts reads a foreign GSD-2 tasks/ layout during a one-time import. Neither is a phase directory. scanPhasePlans gains allPlanFiles (pre-supersession) alongside planFiles so one owner answers both questions: verify.cts's numbering-gap check wants every plan on disk, its pairing check wants the live set. Both fields are additive. Highest-severity fix: cmdPhasePlanIndex, which feeds execute-phase wave scheduling, was scheduling status:superseded plans into waves and reporting zero plans for the post-#3139 nested layout. filterPlanFiles and filterSummaryFiles are deleted; getPhaseFileStats orphaned them and only their own tests still called them. New leaf module src/planning-scope.cts carries the frozen SCOPE discriminator, with its six-gate ripple closed: gitignore, inventory manifest, INVENTORY.md and the CONTEXT.md glossary. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012qYy4ZWif3sscQyMsup6Ma * docs(#3183): amend ADR-3180 for the Phase 1/3 boundary re-slice The contract held; the phase boundary did not. The whole-repo drift guard found 26 re-derivations across 9 files against the epic's estimate of 3, and cmdProgressRender re-derives both enumeration and plan counting on adjacent lines, so DW4 was unsatisfiable within Phase 1's original file scope. Records the amended scope, scanPhasePlans's new allPlanFiles field, findOrphanSummaries, the two documented exemptions, the re-derived Tier-2 table, and the describeNonCanonicalPlans trap for later phases. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012qYy4ZWif3sscQyMsup6Ma * fix(#3183): complete the canonical pairing rule and gate the naming diagnostic The remote runner went red with 13 deterministic failures on both lanes, and they were right: replacing verify.cts's canonicalPlanStem pairing with summaryCandidates dropped a case the bespoke rule covered. A plan carrying a descriptive slug after its id (68-01-scaffolding-PLAN.md) pairs with its canonical-stem summary (68-01-SUMMARY.md), and summaryCandidates generated no such candidate, so the plan read unsummarized. The fix is to complete the one rule rather than restore a second: summaryCandidates gains a canonical-id candidate, narrowed to fire only when an id pair was actually extracted. countMatchedSummaries, findUnsummarizedPlans and findOrphanSummaries all inherit it. The two-plans-one-summary collision behaviour of the original rule is preserved deliberately and documented in place. Second defect, independently root-caused while verifying: routing the #2893 naming diagnostic through scanPhasePlans exposed it to the loose /PLAN/i fallback, which is correct for counting and wrong for a naming check — a non-canonically-named file was accepted as a valid plan and the diagnostic went silent. cmdPhasesList, cmdFindPhase and cmdPhasePlanIndex now intersect with a strict isCanonicalPlanFile predicate before reporting names. Same class as the describeNonCanonicalPlans trap already recorded in ADR-3180: a question about file naming wants the physical, strictly-matched set; only a question about outstanding work wants the live set. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012qYy4ZWif3sscQyMsup6Ma * chore(#3183): register planning-scope.cjs in the eslint migration list tests/repo-invariants.test.cjs asserts every bin/lib/*.cjs is linted xor ignored per its ADR-457 migration state. The new planning-scope module closed five of the six .cts ripple gates - gitignore, inventory manifest, INVENTORY.md and the CONTEXT.md glossary - but not eslint, because that one is enforced by a test rather than by lint:ci, so the local pipeline stayed green while it was missing. Generated from src/planning-scope.cts, so the .cjs is ignored and the .cts is linted, matching every other migrated module. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012qYy4ZWif3sscQyMsup6Ma * fix(#3183): replace the plan-count drift detector with a literal tokenizer CodeQL reported 4 high-severity js/redos alerts on REGEX_LITERAL_MD_RE, the backtracking regex that finds "a regex literal mentioning PLAN/SUMMARY and an escaped \.md". Five review rounds found it had two defects, not one: - EXPONENTIAL, then CUBIC. Its "any char" atom `(?:\\.|[^/\r\n])` let a `\.` pair be consumed either as one escape or as two class characters, which is exponential backtracking: 27,464ms on `"/\.mdplan" + "\.".repeat(28) + "X"`. Excluding `\` from the class killed that but left a cubic path — 23ms at N=200, 172ms at N=400, 1362ms at N=800 on `"/" + "PLAN\.md".repeat(N)` with no closing `/`. This guard is the last stage of `npm run lint:ci`, which CI runs on fork pull requests, so a crafted src/*.cts could stall the job. - A DETECTION HOLE. A character class holding a bare, unescaped `/` — e.g. `/SUMMARY[^/]*\.md$/`, an ordinary path-excluding filter — terminated the literal at that `/`, so the scan never reached `\.md` and the guard missed it entirely. (Classes holding an ESCAPED `\/` were already matched; the tests cover those separately as parity, not as regressions.) Both defects have one root cause: regex-literal grammar — `\x` escapes, and `/` inside `[...]` not terminating — is not expressible in a backtracking regex. So the detector is now a tokenizer, not a regex. readRegexLiteralAt reads the literal at a given `/` in a single left-to-right pass with no backtracking, treating escapes as two-character units and suppressing the `/` terminator inside a character class. findRegexLiteralMdMatch restarts it at every `/` on the line, preserving the old "find anywhere" behaviour; MAX_REGEX_LITERAL_LEN (400) bounds each read — including the trailing-flag scan — which keeps the whole-line cost linear. Results: cubic shape flat at 0.06-0.39ms out to N=3200 (25KB), exponential shape 0.01ms at 28 reps and 0.00ms at 64, and the bare-`/` class shapes are now caught. Differential against the old regex over 28,474 lines (those matching FILENAME_TEST_RE but not PLAN_SUMMARY_LITERAL_RE, across src/tests/scripts/ gsd-core/bin/eslint-rules, excluding 265 lines with >6 backslashes on which the old regex hangs): 6 differences, all the tokenizer returning the fuller or newly-correct literal, 0 old-only misses. The `\.md` token stays case-insensitive, matching the `/i` the old regex carried. Also closes three holes in the same new file: - walk() tested entry.isFile(), false for a symlink, so a symlinked src/*.cts was silently unscanned — an evasion of a guard whose stated principle (ADR-3180 Decision 4a) is whole-repo discovery with no allowlist. It now resolves symlinks, but confined: file links must resolve inside the repo root, directory links inside the scanned dir itself. Every sibling drift guard in scripts/ uses the Dirent classification and never follows links, so following them unconfined would have made this the only linter able to read outside the tree — on fork PRs an arbitrary out-of-repo read whose matched fragments reach a public CI log. The narrower directory rule additionally stops `src/up -> ..` from sweeping the whole repo, and the skip list is now checked against resolved paths so `src/g -> ../.git` cannot reach .git/** or node_modules/**. Real paths are de-duplicated and files reported canonically, so a symlink alias cannot shift which FUNCTION_SCOPED_EXEMPTIONS key applies. - Both the reported fragment and the reported FILE PATH are attacker- controlled source text written straight to a CI log, and git permits control bytes in a filename. Both are now escaped — C0/C1/DEL plus the bidi and zero-width controls — so a crafted literal or filename cannot recolour the log, overwrite a line with CR, or fabricate a line that looks like this guard's own success output. Regression coverage in tests/plan-count-single-owner.test.cjs: a child-process probe over both pathological shapes (catastrophic backtracking is synchronous and would freeze the suite rather than fail one test), the bare-`/` class shapes verified to fail against the parent-commit blob, root-confinement tests covering the outside-file, outside-directory, cycle, broken-link and duplicate cases, direct isInsideRoot coverage including the sibling-prefix case that a bare startsWith would let through, sanitizeForReport coverage, and limit-1/limit/limit+1 coverage of MAX_REGEX_LITERAL_LEN derived from the exported constant. The earlier structural assertion was dropped — it checked for the substring `[^/`, which respelling the class as `[^\r\n/]` defeats while staying exponential. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012qYy4ZWif3sscQyMsup6Ma * chore(#3183): backfill changeset PR number Restores b77931869, which a force-push during the ReDoS remediation dropped. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012qYy4ZWif3sscQyMsup6Ma --------- Co-authored-by: sim <sim@local> Co-authored-by: Claude Opus 5 (1M context) <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