* feat(routing): add CommandRoutingHub with behavioral test suite (#3788) Introduces createHub({ mode, sdkLoader, cjsRegistry, manifest }) and hub.dispatch({ family, subcommand, args, cwd, raw }) -> Result with a closed 6-value ERROR_KINDS frozen enum. Hub never throws, never prints, and enforces no transparent fallback between sdk/cjs modes. 34 behavioral tests cover all errorKind values, mode fixation, and the no-throw contract. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * refactor(routing): migrate phase-command-router to CommandRoutingHub (#3788) Rewrites phase-command-router.cjs to dispatch through CommandRoutingHub. Public entry point routePhaseCommand({ phase, args, cwd, raw, error }) is unchanged. The adapter determines mode (sdk/cjs) from env + tryLoadSdk(), constructs a hub, dispatches, and translates the pure Result back to output()/error() calls. New behavioral test suite (23 tests) replaces the old mock-heavy approach and includes two integration tests through the real hub. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * docs(routing): ADR + glossary + changeset for CommandRoutingHub (#3788) Adds ADR-3788 documenting the hub's design contract (pure result, fixed mode, closed 6-value errorKind enum, no transparent fallback). Adds Command Routing Hub glossary entry to CONTEXT.md and a one-paragraph reference to ARCHITECTURE.md. Changeset fragment records the Changed entry. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * fix(docs): rename ADR to sequential convention 0012 (#3788) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * docs(inventory): register CommandRoutingHub in INVENTORY (#3788) Add command-routing-hub.cjs row to docs/INVENTORY.md CLI Modules table, bump headline count from 72 to 73, and regenerate INVENTORY-MANIFEST.json via scripts/gen-inventory-manifest.cjs --write. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * docs(adr): add 0012 to ADR index (#3788) Add entry for 0012-command-routing-hub.md to the index table in docs/adr/README.md so the enh-3271-sdk-adr-structure lint passes. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * chore(lint): bump phase test-file ceiling to accommodate command-router suite (#3788) phase-command-router.test.cjs added by the CommandRoutingHub migration pushes the phase prefix cluster from 4 to 5 test files. Bump the allowlist ceiling from 4 to 5 (issue 3788) so lint-test-file-count passes. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * fix(routing): preserve phase.mvp-mode JSON error and ROADMAP scan through hub (#3788) mvp-mode was never registered in the SDK; the pre-#3788 CJS router always dispatched it via the CJS handler even when sdkAvailable was true. After the hub migration, SDK-mode hubs (Docker, where the SDK build exists) sent mvp-mode to the SDK bridge, which returned SdkDispatchFailed with reason 'unknown' instead of the expected 'usage' code, and failed ROADMAP lookups. Fix by short-circuiting mvp-mode to the CJS handler before hub construction, matching the pre-migration observable behaviour. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * docs(adr): note SDK-incomplete subcommand limitation in ADR-0012 (#3788) * fix(inventory): bump CLI Modules headline to 74 after rebase onto main (#3788) Upstream added code-review-flags.cjs (72→73) at the same time our branch added command-routing-hub.cjs. After rebase both modules exist (74 total) but the headline stayed at 73; bump to 74. * fix(routing): remove dead mvp-mode handler from cjsRegistry (#3788) The cjsRegistry['phase']['mvp-mode'] handler (previously lines 65–68) was unreachable: the early-return bypass at line 56 intercepts mvp-mode before hub construction in CJS mode, and in SDK mode cjsRegistry is passed as undefined. Remove the dead handler; all 57 tests still pass. * docs(adr): correct router count in ADR-0012 (#3788) The context section cited "eight" routers including "frontmatter" but there is no frontmatter-command-router.cjs. The actual count is seven: phase, phases, roadmap, state, verify, validate, init. * fix(routing): guard missing subcommand + use ERROR_KINDS constant (#3788) Two fixes in phase-command-router.cjs: 1. Add early-return for missing subcommand before hub construction. Pre-#3788 the routeCjsCommandFamily fell through to error() for undefined args[1]; post-#3788 the hub's manifest check skips falsy subcommands, which would have sent bare 'phase' into SDK dispatch in SDK mode instead of the expected "Available: ..." error message. 2. Switch on ERROR_KINDS.UnknownCommand instead of bare 'UnknownCommand' string, per ADR-0012's closed-enum contract ("callers switch on ERROR_KINDS values, not bare string literals"). * docs(routing): fix factual errors in ARCHITECTURE, ADR-0012, changeset (#3788) Three corrections: 1. ARCHITECTURE.md: softened "All CJS command family routers dispatch through CommandRoutingHub" — only phase-command-router.cjs is migrated in this PR; remaining routers still use routeCjsCommandFamily and migrate in follow-up issues. 2. ADR-0012: corrected the SDK mvp-mode claim. The ADR said "the SDK has no equivalent entry" but sdk/src/query/command-static-catalog- domain.ts:104-105 registers phase.mvp-mode. The actual reason for the early-return bypass is divergent ROADMAP scan behaviour and error reason codes, not SDK absence. 3. .changeset/mellow-tigers-gather.md: corrected pr: 1 → pr: 3828. --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Architecture Decision Records
This directory contains Architecture Decision Records (ADRs) for GSD.
Each ADR documents one architectural decision: what was decided, why, and what consequences follow. ADRs are append-only. Amendments extend existing ADRs with a dated section rather than replacing them.
Naming Convention
New ADRs use issue#-prefix slug naming:
docs/adr/<issue#>-<kebab-slug>.md
Examples: 3485-adr-prd-naming-convention.md, 3464-review-default-reviewers.md.
Why
Two developers computing "next ADR number" locally against main will independently pick the same integer and both ship. The collision is already on disk — 0010-* exists twice and 0011-* exists three times. GitHub issue numbers are server-assigned and atomic: the moment you open an issue, that number is reserved globally. Two PRs that both edit the ### Fixed block of CHANGELOG.md always conflict on merge — two PRs that each use a distinct issue# as their ADR prefix never collide. Same shape, same solution.
Legacy ADRs
Files 0001-* through 0011-* are preserved as immutable historical record. The duplicate 0010-* and the three-way 0011-* are documented residue of the old local-compute convention — not patterns to imitate. Do not renumber them.
Full process
See CONTRIBUTING.md — "Proposing an ADR or PRD" for the end-to-end workflow: opening the issue, waiting for approval, naming the file, and submitting the PR.
Index
| ADR | Title | Status |
|---|---|---|
| 0001-dispatch-policy-module.md | Dispatch policy module as single seam for query execution outcomes | Accepted |
| 0002-command-contract-validation-module.md | Command Contract Validation Module | Accepted |
| 0003-model-catalog-module.md | Model Catalog Module as single source of truth for agent profiles and runtime tier defaults | Accepted |
| 0004-worktree-workstream-seam-module.md | Planning Workspace Module as single seam for worktree and workstream state | Accepted |
| 0005-sdk-architecture-seam-map.md | SDK Architecture seam map for query/runtime surfaces | Accepted |
| 0006-planning-path-projection-module.md | Planning Path Projection Module for SDK query handlers | Accepted |
| 0007-sdk-package-seam-module.md | SDK Package Seam Module owns SDK-to-get-shit-done-cc compatibility | Accepted |
| 0008-installer-migration-module.md | Installer Migration Module owns install-time upgrade safety | Accepted |
| 0009-shell-command-projection-module.md | Shell Command Projection Module owns runtime-aware OS command rendering | Accepted |
| 0010-file-operation-engine-module.md | File Operation Engine Module owns safe runtime/config file mutations | Proposed |
| 0010-skill-surface-budget-module.md | Skill Surface Budget Module — earlier draft superseded by ADR-0011 | Superseded by 0011 |
| 0011-skill-surface-budget-module.md | Skill Surface Budget Module owns install-time profile staging and runtime surface control | Accepted |
| 0011-review-default-reviewers.md | Review default-reviewers selection policy for /gsd:review | Accepted |
| 0011-review-default-reviewers-prd.md | PRD for review.default_reviewers feature (#3464) | Reference |
| 0012-command-routing-hub.md | CommandRoutingHub as single dispatch seam for CJS command families | Accepted |
| 3524-cjs-sdk-hard-seam.md | CJS↔SDK hard seam — single canonical owner per responsibility (#3524) | Proposed |
| 3660-runtime-artifact-layout-module.md | Runtime Artifact Layout Module owns per-runtime artifact placement | Proposed |
Seam map
ADR 0005 is the top-level SDK seam index. It references per-seam ADRs and states the narrow-waist principle each seam follows. Use it as the entry point for understanding SDK module ownership.
ADR 0006 documents how SDK query handlers project planning paths (cwd → effectiveRoot → .planning/<project>/...). Cross-reference with the Planning Workspace Module (ADR 0004) for workstream pointer policy.
ADR 0008 documents the Installer Migration Module for safe install-time moves, removals, config rewrites, and user-data preservation.
ADR 0009 documents the Shell Command Projection Module seam for runtime-aware projection of installer-owned command text and projection IR.
ADR 0010 documents the File Operation Engine Module seam for converging installer/migration/planning file mutation safety policy, and its relationship to ADR 0009 hook-command ownership policy.
ADR 0011 documents the Skill Surface Budget Module for install-time skill/agent
profile staging (--profile=<name>, .gsd-profile marker, requires: closure)
and the Phase 2 runtime /gsd:surface command for cluster-level enable/disable
without reinstall.