data: exclude market-class competitors from the downstream market feed

Add 105 plugin markets / directories / stores / registries (including
desktop shells with a built-in plugin market and a fork of this
directory) to curated.market_exclusions so the downstream
data/market.json feed no longer lists competing market surfaces —
market-in-market conflict.

- rebuild data/market.json via scripts/market.mjs: pool 4495 -> 4412,
  14 competitor entries dropped from the published 300, MARKET.md
  rebuilt alongside
- document the rule in data/review/README.md and scripts/market.mjs
- add a regression test: market_exclusions entries never reach the feed

Validated: node --test scripts/test-market.mjs (23/23),
validate-market.mjs, validate-curated.mjs --from-snapshot (0 errors),
regeneration idempotent.

Author: bruc3van

MARKET.md

@@ -10,7 +10,7 @@ This directory is the review stage of the "raw data → human verification → u
 | --- | --- | --- |
 | `data/repositories.json` | 脚本（`scripts/update.mjs`，每日） | 原始快照：`dsh-plugin` Topic 下的全部仓库，无过滤、无审核 |
 | `data/approved.json` | 维护者 / AI 审核 | 核实通过的仓库清单，`"owner/name": "YYYY-MM-DD"`。**用户可见页面的门控** |
-| `data/curated.json` | 维护者 / AI 审核 | 编辑部裁决：`excluded_repos`（剔除 + 理由）、`leaderboard_exclusions`（只进目录不进榜单）、`market_exclusions`（可进目录/榜单、不进下游市场）、`category_overrides`（分类） |
+| `data/curated.json` | 维护者 / AI 审核 | 编辑部裁决：`excluded_repos`（剔除 + 理由）、`leaderboard_exclusions`（只进目录不进榜单）、`market_exclusions`（可进目录/榜单、不进下游市场——包括非插件形态与 market 类竞品，避免市场套市场冲突）、`category_overrides`（分类） |
 | `data/review/pending.json` / `pending.md` | 脚本（`scripts/update.mjs`，每日） | 待审核队列：新增到 Topic、带简介、尚未核实的仓库（自动生成，勿手改） |
 | `data/market.json` | 脚本（`scripts/market.mjs`，每日 cron 与 curation 合并后） | 下游市场（dsh-desktop-safe-market）消费的精选文件：快照 + curation 的纯投影，按类目均衡发牌、≤300 条、≤500 KB。**不受 `approved.json` 门控**（只按排除名单过滤），接口约定见下游 `docs/market-json-spec.md` |
 | `CATALOG.md`、`TOP200.md` | `scripts/merge.mjs`（仅审核合并时） | 用户可见页面；**脚本不会自动更新它们** |
@@ -23,6 +23,7 @@ This directory is the review stage of the "raw data → human verification → u
    - **剔除** → 加入 `data/curated.json` 的 `excluded_repos`，理由写明（照抄现有条目风格）
    - **只进目录、不进榜单** → 同时加入 `approved.json` 与 `curated.json` 的 `leaderboard_exclusions`
    - **非插件形态（桌面壳/启动器、Docker 部署、手册教程、VS Code 扩展等）**：可留在目录与榜单，但加入 `curated.json` 的 `market_exclusions` 以免进入下游市场文件
+   - **market 类竞品（插件市场 / 商店 / 目录 / registry / 插件中心等，包括内置插件市场的桌面端）**：可留在目录与榜单，但必须加入 `curated.json` 的 `market_exclusions`，避免下游市场文件出现市场套市场冲突
 3. **合并**：运行 `node scripts/merge.mjs`，重新生成 `CATALOG.md`、`TOP200.md` 与待审核队列，然后提交。
 
 ## AI 一句话审核 / One-line AI review

data/curated.json

@@ -113,8 +113,9 @@ export function filterPool(snapshot, curated) {
     Object.keys(curated.leaderboard_exclusions || {}).map((key) => key.toLowerCase()),
   );
   // Non-plugin forms (desktop shells, launchers, docs, Docker packaging, VS Code
-  // extensions, …) stay in the catalog and leaderboard but must not reach the
-  // downstream market — spec §4.2, editorial list in curated.json.
+  // extensions, …) and competing plugin markets / directories / stores
+  // (market-in-market conflict) stay in the catalog and leaderboard but must
+  // not reach the downstream market — spec §4.2, editorial list in curated.json.
   const marketExcluded = new Set(
     Object.keys(curated.market_exclusions || {}).map((key) => key.toLowerCase()),
   );

data/market.json

@@ -128,6 +128,36 @@ test('filterPool applies every exclusion rule', () => {
   );
 });
 
+test('filterPool drops market-class competitors listed in market_exclusions', () => {
+  const market = repo({
+    id: 1,
+    full_name: 'competitor/plugin-market',
+    name: 'plugin-market',
+    description: 'A plugin marketplace for DSH.',
+  });
+  const ordinary = repo({ id: 2, full_name: 'keep/me' });
+  const c = curated({
+    market_exclusions: {
+      'competitor/plugin-market':
+        'A competing DSH plugin market — market-in-market conflict; stays in the catalog and leaderboard, excluded from the downstream market.',
+    },
+  });
+  const { repos: kept } = filterPool(snapshot([market, ordinary]), c);
+  assert.deepEqual(
+    kept.map(({ repo: r }) => r.full_name),
+    ['keep/me'],
+  );
+  // The market-class entry must not reappear in the published feed either.
+  const result = buildMarket({
+    snapshot: snapshot([market, ordinary]),
+    curated: c,
+    previous: null,
+    now: new Date('2026-08-16T01:30:00Z'),
+  });
+  assert.equal(result.outcome, 'written');
+  assert.deepEqual(result.envelope.entries.map((entry) => entry.full_name), ['keep/me']);
+});
+
 test('filterPool reports unknown category_overrides values without dropping the repo', () => {
   const c = curated({ category_overrides: { 'a/agent-thing': 'no-such-category' } });
   const { repos, warnings } = filterPool(snapshot([repo({ full_name: 'a/agent-thing', name: 'agent-thing' })]), c);