05b170e448
* feat(#2928): port CONTEXT.md predicate fact-store into the src seam Productionizes the ADR-1671 Option-E reference example as a real module: src/context-predicates.cts (parser + selector + index builder) compiled to gsd-core/bin/lib/, plus scripts/gen-context-index.cjs following the repo's --check/--write drift-guard idiom and wired into lint:generated-sync. Parser behavior is deliberately prototype-equivalent in this commit so the next commit's regression matrix binds to the real defects rather than to a missing module. Two locked design deviations from the prototype: - duplicates carry a count, not line numbers - the committed index carries no line field at all, resolving ADR-1671 open question 4: an artifact without line numbers cannot drift on a line shift, so promoting --check to a CI gate does not make it routinely red Also reconciles the one remaining duplicate predicate ID (RULESET.WORKFLOW_MARKDOWN.FENCES was declared twice; the non-MD040 wording is removed) so the gate can land fail-closed on duplicates. Refs #1671 * test(#2928): failing-first matrix for the predicate fact-store Adds the regression matrix from the phase test plan: parser declaration forms, fence and comment regions, ID/value grammar boundaries at limit-1/limit/limit+1, CRLF fidelity, duplicate detection, the drift-guard CLI, the selector query surface, and four document-shaped fast-check properties. Seven rows are RED for behavioral reasons against the ported parser: indented-bare, star-list, plus-list and numbered-list declaration forms are dropped; a tilde fence and a four-backtick fence containing a shorter fence are not skipped; and a multi-line HTML comment is parsed as live. Eleven selector rows are RED because the query surface is not wired yet. Negative fixtures come from real repo documents that predate the grammar (CONTEXT.md, CONTRIBUTING.md's fenced env-assignment examples) per the fixture-provenance rule, and the property generators are document-shaped rather than seeded from our own serializer. Refs #1671 * fix(#2928): consume the shared fence scanner, relocate the index, wire the selector Drives the failing-first matrix green. Parser: replaces the ported naive triple-backtick toggle with the shared markdown-sectionizer fence engine. scanFencedBlocks and FencedBlockRecord gain an export keyword — the only change to that module, which has 71 upstream dependents — because it already returns line-indexed spans, which is exactly what a line-reporting parser needs. It also already documents itself as the second copy of the fence state machine pending consolidation; adding a third copy here would have been the generative-fix divergence this repo warns about. A parity suite now pins predicate fence-skipping against that scanner across eight fence shapes. HTML-comment skipping stays local because the sectionizer has no comment scanner. Declaration forms widen to indented-bare, star, plus and numbered list items. Index location: docs/CONTEXT-INDEX.json, not a module under bin/lib. The remote matrix run caught the original choice — a committed .cjs there ships ~120KB of CONTEXT.md prose into a runtime module, and two content guards fired truthfully on it (a leaked .claude install path, and four hardcoded package-name literals). Neither guard was allowlisted; the artifact moved instead, mirroring docs/INVENTORY-MANIFEST.json. Nothing at runtime needs to require it — it is a drift-detection artifact, so the selector parses CONTEXT.md live and is always current. Generator: adds a frozen REASON enum and --check --json so the gate's outcome is asserted structurally instead of by matching prose, and --context-path/--index-path so tests drive the real CLI against a temp tree with no filesystem monkeypatching. Selector: gsd_run query context-predicates with --class/--prefix/--contains, structured output carrying a matched count, own-property guards, and no project-root resolution. Registering it exposed that the query dispatch table and the usage string had drifted: a new parity test found 20 routed commands missing from the usage list, all added here rather than deferred. Refs #1671 * test(#2928): lock the newly-public scanFencedBlocks contract Exporting scanFencedBlocks made it public API for the first time, so it needs its own contract test independent of the consumer that motivated the export. Memtrace's co-change analysis flagged the gap: this suite changes together with markdown-sectionizer.cts 8 times in 90 days and was absent from the diff. Covers the documented rules: 0-based indices, -1 for an unterminated fence, the same-char/>=length/no-trailing-text closer rule, a shorter fence inside a longer one staying content, CommonMark 4.5 backtick-in-info-string, and <=3-space indent tolerance. Refs #1671 * fix(#2928): address both isolated review passes Two independent reviewers (correctness axis and security axis, neither the author) found seven findings. All are fixed here with regression tests; none deferred. BLOCKER — comment-blind fence scanning caused silent, permanent predicate loss. The HTML-comment scan and the fence scan ran as two independent passes, and the fence scanner is comment-blind, so a fence delimiter inside an HTML comment with no later close read as an unterminated fence and skipped every remaining line to EOF. Worse, the drift-guard could not catch it: it diffs against a baseline produced by the same corrupted parse. The two constructs now interleave in a single pass so each suppresses the other's boundary detection while active, covered in both directions. The parity suite still binds this scanner to markdown-sectionizer's for comment-free documents, so the two cannot diverge unnoticed. BLOCKER — the selector was not consumed anywhere, leaving the phase's acceptance criterion unmet. Now wired into the pre-work predicate-citation step in contributor-standards, which is the repo's actual brief-assembly path; no code-level brief assembler exists to wire into. MAJOR — ReDoS with an unauthenticated CI-hang exploit. The predicate-id regex nested a dot-containing character class inside a dot-prefixed repeat, so N consecutive dots had exponentially many partitions: 40 dots took 565ms and growth was exponential. CI runs this parser over a pull request's own CONTEXT.md, so any contributor could have hung a shared runner with one line. Replaced with linear per-segment validation. Doubled-dot ids are now rejected; the real document contains none. MAJOR — the duplicate-id gate had only ever been proven on synthetic fixtures. A test now re-inserts the exact line this branch removed and asserts the real generator names it. MAJOR — --check together with --write silently let write win, turning the gate into a writer; a missing path value resolved to the cwd and leaked an EISDIR stack trace. Both are now clean usage errors. MINOR — the hoisted skip-list was exported as a live mutable Set; replaced with a read-only predicate. MINOR — flag-shaped selector values were unmatchable; the inline --flag=value form now provides the escape hatch. Refs #1671 * chore(#2928): backfill changeset PR number 2938 --------- 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
- 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
- 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- 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