fix: 补齐市场静态事实并保持旧客户端兼容 (#184)

## 中文

补齐已有 owner 与已锁定上游内容可证明的许可证、技能类型和收录版本。保留 Anthropic Source Available
和其他附加条件，不把所有内容统一标为 MIT，不提升 listing-only 的安装准入。

README 保留最新的双语结构及以 manifest 为准的数量口径，增加静态目录不存访问量、下载量、评分或 Stars 的边界。

发布兼容性：**本 PR 不包含**两支团队新增的本地化字段，也不包含微信支付 `latestVersion:
1.0`；旧客户端会拒绝这些新字段，另以待发布 PR 保留，等匹配客户端发布后再合并。

验证：47 项目录校验测试、19 项 i18n 测试、5 项合集生成测试通过；完整目录/i18n/翻译新鲜度检查通过，6
个固定来源合集的生成检查通过，2 个浮动来源按既有规则明确跳过。发现并修复了生成器在 Windows 使用反斜杠造成的误报：输出改为 POSIX
路径，比较规则不放宽、不重写合集数据。

## English

Fill only license, type and listed-release facts supported by existing
owners or pinned upstream content. Preserve custom license restrictions
and acquisition eligibility. Keep the current bilingual README and
manifest-derived inventory; do not author usage analytics.

This PR deliberately excludes localized team fields and the two-part
WeChat Pay version that older clients reject. Those changes remain
pending a compatible client release.

Validation passes: 47 catalog-validator tests, 19 i18n tests, five
collection-generator tests, complete catalog and translation checks, and
generated inventory checks for six pinned collections. Two mutable
sources remain explicitly skipped. Fix Windows-generated path separators
without weakening comparison or changing declared children.

skills/baidu-poi-search/SKILL.md

@@ -1,4 +1,5 @@
 ---
+license: "MIT"
 name: baidu-poi-search
 description: >-
   百度地图企业 POI 搜索——输入企业名称，返回 POI 名称/地址/经纬度/分支机构。Use when 用户提到"查企业地址"、"查公司位置"、"POI搜索"、"企业地图"、"经纬度"、"查分支机构"、"百度地图"、"企业网点"、"周边企业"。

skills/baidu-poi-search/catalog-metadata.v1.json

@@ -53,7 +53,8 @@
     "stewardship": "official",
     "availability": "installable",
     "license": {
-      "state": "unknown"
+      "state": "known",
+      "value": "MIT"
     },
     "redistribution": "verify-package-terms",
     "listingMaintainer": {
@@ -69,6 +70,7 @@
   },
   "spec": {
     "kind": "skill",
-    "riskLevel": "low"
+    "riskLevel": "low",
+    "skillType": "procedural"
   }
 }