feat(skills): 智能体 CRUD 四技能改经 ManageAgent 内置工具（实例鉴权适配） (#52)

## 摘要 / Summary

### 中文

主仓库 desirecore#1225 新增 `ManageAgent` 内置工具后,智能体 CRUD 四技能从"调本机 HTTP
API/curl"改写为调用该工具(实例鉴权上线后 Agent 直接访问本机 API 会 401):

- **create-agent 2.5.0**:`POST /api/agents` →
`ManageAgent(action='create', ...)`;补充保留标识(core/desirecore)拒创、config 仅允许
llm 白名单的错误处理
- **delete-agent 2.5.0**:`DELETE /api/agents/:id` →
`action='delete'`(工具层强制用户确认);错误处理改为工具拒绝语义(核心智能体/自删/活跃状态);补团队级联说明
- **discover-agent 2.6.0**:`GET /api/agents(/:id)` →
`action='list'/'get'`
- **update-agent
3.1.0**:结构化字段(name/description/llm/persona/principles)改经
`action='update'`(白名单+schema 校验+字段级合并语义),自由格式文件仍 Read/Write

四技能声明 `market.required_client_version:
10.0.90`,老客户端在市场端被门控禁装。中英双语正文同步改写,i18n source_hash 已重算(validate-i18n.py
通过);manifest 1.2.10。

### English

After desirecore#1225 shipped the `ManageAgent` builtin tool, the four
agent-CRUD skills are rewritten from local-HTTP-API/curl instructions to
tool calls (direct local API access now returns 401 under instance
auth). Each skill declares `market.required_client_version: 10.0.90` so
older clients are gated from installing. Both locales are rewritten in
sync and i18n source hashes recomputed (validate-i18n.py passes);
manifest bumped to 1.2.10.

主仓库回填:合并后将在 desirecore 主仓库执行 `npm run sync-market` 生成新的
defaults/market.zip 并单独提 PR。

manifest.json

@@ -1,6 +1,6 @@
 {
   "name": "DesireCore Official Market",
-  "version": "1.2.9",
+  "version": "1.2.10",
   "schemaVersion": "1.1.0",
   "supportedLocales": ["zh-CN", "en-US"],
   "defaultLocale": "en-US",
@@ -28,7 +28,7 @@
   "stats": {
     "totalAgents": 1,
     "totalSkills": 50,
-    "lastUpdated": "2026-07-16"
+    "lastUpdated": "2026-07-18"
   },
   "features": [
     "curated-index",