feat(app): 移除内置agents并添加CORS支持和技能上传优化

移除了agents/registry.json中的所有内置agents配置，将agents数组清空。
为web应用添加了CORS中间件支持，允许指定的前端地址跨域访问。
重构了技能上传功能，增加了LLM重写机制，自动规范化上传的技能格式。
新增了工具名称提取逻辑，从技能正文中自动识别Required Tools段落。
更新了技能学习候选者和草稿的载荷结构，添加评估报告统计信息。
修改了意图路由技能的说明，改进任务状态管理逻辑。

skills/filesystem-operation/versions/v0001/version.json

@@ -1,12 +1,18 @@
 {
   "change_reason": "Initial skill for local filesystem operations",
-  "content_hash": "placeholder",
+  "content_hash": "d462cfff23d0a7c79e5c7319c66952133482193f063150062a93853a489e1160",
   "created_at": "2026-05-26T00:00:00.000000+00:00",
   "created_by": "system",
   "frontmatter": {
     "description": "本地文件系统读写、搜索和目录操作。支持读取、写入、修改、搜索文件和目录遍历。",
     "name": "filesystem-operation",
-    "tools": ["read_file", "write_file", "patch_file", "search_files", "list_directory"]
+    "tools": [
+      "read_file",
+      "write_file",
+      "patch_file",
+      "search_files",
+      "list_directory"
+    ]
   },
   "parent_version": null,
   "provenance": {
@@ -15,8 +21,14 @@
   },
   "review_state": "published",
   "skill_name": "filesystem-operation",
-  "summary": "Filesystem Operation — 本地文件系统操作工具集",
-  "summary_hash": "placeholder",
-  "tool_hints": ["read_file", "write_file", "patch_file", "search_files", "list_directory"],
+  "summary": "# Filesystem Operation ## Overview 本地文件系统读写、搜索和目录操作。支持读取、写入、修改、搜索文件和目录遍历。",
+  "summary_hash": "aa53a9010f1f28469aecbdc81e382a2a6ff1a1335cce3abba56ae9a084535605",
+  "tool_hints": [
+    "read_file",
+    "write_file",
+    "patch_file",
+    "search_files",
+    "list_directory"
+  ],
   "version": "v0001"
-}
+}