test(#1975): consolidate 51 CLI + scripts-tooling regression tests into module suites

Fold 51 issue-named CLI black-box + scripts-tooling regression files into their
canonical module suites (runtime-launcher-parity, worktree-safety, install-*, managed-hooks,
read-guard, capability-registry, etc.), plus a NEW slash-command-namespace.test.cjs grouping
the 4 slash/colon-namespace-leak invariant suites that had no canonical owner. Verbatim
block-scoped describe wrappers; 427 subtests conserved 1:1.

Host-env pre-check (per B2): no CLI-receiving host sets a redirecting GSD_WORKSTREAM/GSD_PROJECT
value. One folded suite (bug-3668 runtime resolver) creates an extension-less PATH gsd-tools
stub + bash -c; co-locating it with the host's chmodSync tripped local/no-unguarded-nonportable-exec,
so it's now Windows-guarded (skip on win32) matching the host suite's own bash -c guard.

Regenerates regression-name allowlist (222->182), ratchets file-count allowlist (graphify 7->6,
docs entry removed), makes 26 relocated allow-test-rule exemptions issue-ref-compliant (ADR-456;
prunes stale ids). Repoints 13 tests/ references across CONTEXT.md, COMMANDS.md/FEATURES.md
(EN + ja/ko/pt/zh) and ADR-0002. lint:ci green.

Part of epic #1969. Closes #1975.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/COMMANDS.md

@@ -1718,7 +1718,7 @@ A lint gate enforces the budget:
 npm run lint:descriptions
 ```
 
-The check is also run as part of `npm test` via `tests/enh-2789-description-budget.test.cjs`.
+The check is also run as part of `npm test` via `tests/skill-frontmatter-contract.test.cjs`.
 
 ---
 

docs/FEATURES.md

@@ -1834,7 +1834,7 @@ Test suite that scans all agent, workflow, and command files for embedded inject
 - REQ-CTXRED-01: System MUST truncate oversized markdown artifacts to fit within context budgets
 - REQ-CTXRED-02: System MUST order prompts for cache-friendly assembly (stable prefixes first)
 - REQ-CTXRED-03: Reduction MUST preserve essential information (headings, requirements, task structure)
-- REQ-CTXRED-04: Skill `description:` fields MUST be ≤ 100 chars; enforced by `npm run lint:descriptions` (see `scripts/lint-descriptions.cjs` and `tests/enh-2789-description-budget.test.cjs`)
+- REQ-CTXRED-04: Skill `description:` fields MUST be ≤ 100 chars; enforced by `npm run lint:descriptions` (see `scripts/lint-descriptions.cjs` and `tests/skill-frontmatter-contract.test.cjs`)
 
 **Process:**
 1. **Measure** — Calculate total prompt size for the workflow

docs/adr/0002-command-contract-validation-module.md

@@ -18,7 +18,7 @@ The command file contract defines what makes a valid `commands/gsd/*.md`:
 ## Context
 
 Before this ADR, the command contract was enforced inconsistently:
-- `tests/enh-2790-skill-consolidation.test.cjs` checked existence and frontmatter of specific post-consolidation commands
+- `tests/skill-frontmatter-contract.test.cjs` (folds former `enh-2790-skill-consolidation`, consolidation epic #1969) checked existence and frontmatter of specific post-consolidation commands
 - `tests/docs-update.test.cjs` (folds former `bug-3135-capture-backlog-workflow`, consolidation epic #1969) checked `execution_context` @-ref resolution (added 2026-05-05)
 - No test checked `allowed-tools` validity, `name:` convention, or `description:` non-emptiness across all commands simultaneously
 

docs/ja-JP/COMMANDS.md

@@ -1509,7 +1509,7 @@ GSD Discord コミュニティに参加するには、GSD README 内のリンク
 npm run lint:descriptions
 ```
 
-このチェックは `tests/enh-2789-description-budget.test.cjs` を介して `npm test` の一部としても実行されます。
+このチェックは `tests/skill-frontmatter-contract.test.cjs` を介して `npm test` の一部としても実行されます。
 
 ---
 

docs/ja-JP/FEATURES.md

@@ -1762,7 +1762,7 @@ Claude が GSD ワークフローコンテキスト外でファイル編集を
 - REQ-CTXRED-01: システムはコンテキスト予算内に収まるよう、大きすぎる Markdown アーティファクトを切り詰めなければならない
 - REQ-CTXRED-02: キャッシュフレンドリーなアセンブリのためにプロンプトを順序付けなければならない（安定したプレフィックスを先頭に）
 - REQ-CTXRED-03: 削減は必須情報（見出し、要件、タスク構造）を保持しなければならない
-- REQ-CTXRED-04: スキルの `description:` フィールドは ≤ 100 文字でなければならない；`npm run lint:descriptions` で強制（`scripts/lint-descriptions.cjs` と `tests/enh-2789-description-budget.test.cjs` 参照）
+- REQ-CTXRED-04: スキルの `description:` フィールドは ≤ 100 文字でなければならない；`npm run lint:descriptions` で強制（`scripts/lint-descriptions.cjs` と `tests/skill-frontmatter-contract.test.cjs` 参照）
 
 **プロセス:**
 1. **計測** — ワークフローの総プロンプトサイズを計算

docs/ko-KR/COMMANDS.md

@@ -1517,7 +1517,7 @@ GSD Discord 커뮤니티에 참여하려면 GSD README의 링크를 방문하거
 npm run lint:descriptions
 ```
 
-이 검사는 `tests/enh-2789-description-budget.test.cjs`를 통해 `npm test`의 일부로도 실행됩니다.
+이 검사는 `tests/skill-frontmatter-contract.test.cjs`를 통해 `npm test`의 일부로도 실행됩니다.
 
 ---
 

docs/pt-BR/COMMANDS.md

@@ -1514,7 +1514,7 @@ Um portão de lint impõe o orçamento:
 npm run lint:descriptions
 ```
 
-A verificação também é executada como parte de `npm test` via `tests/enh-2789-description-budget.test.cjs`.
+A verificação também é executada como parte de `npm test` via `tests/skill-frontmatter-contract.test.cjs`.
 
 ---
 

docs/zh-CN/COMMANDS.md

@@ -1509,7 +1509,7 @@ node gsd-tools.cjs state planned-phase --phase 3 --plans 2
 npm run lint:descriptions
 ```
 
-该检查也作为 `npm test` 的一部分通过 `tests/enh-2789-description-budget.test.cjs` 运行。
+该检查也作为 `npm test` 的一部分通过 `tests/skill-frontmatter-contract.test.cjs` 运行。
 
 ---
 

docs/zh-CN/FEATURES.md

@@ -1778,7 +1778,7 @@ PreToolUse 钩子，检测 Claude 在 GSD 工作流上下文之外尝试文件
 - REQ-CTXRED-01：系统必须截断超大 Markdown 构件以适应上下文预算
 - REQ-CTXRED-02：系统必须为缓存友好的组装对提示进行排序（稳定的前缀优先）
 - REQ-CTXRED-03：压缩必须保留必要信息（标题、需求、任务结构）
-- REQ-CTXRED-04：技能 `description:` 字段必须 ≤ 100 个字符；由 `npm run lint:descriptions` 强制执行（参见 `scripts/lint-descriptions.cjs` 和 `tests/enh-2789-description-budget.test.cjs`）
+- REQ-CTXRED-04：技能 `description:` 字段必须 ≤ 100 个字符；由 `npm run lint:descriptions` 强制执行（参见 `scripts/lint-descriptions.cjs` 和 `tests/skill-frontmatter-contract.test.cjs`）
 
 **流程：**
 1. **测量** — 计算工作流的总提示大小