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。

authz-service/src/app/minio_provisioning.py

@@ -99,7 +99,11 @@ def provision_user_file_minio_settings(
 
         policy = _namespace_policy(bucket=cfg.bucket, namespace=namespace)
         admin.policy_add(policy_name, policy=policy)
-        admin.attach_policy(policies=[policy_name], user=access_key)
+        try:
+            admin.attach_policy(policies=[policy_name], user=access_key)
+        except Exception as exc:
+            if not _is_policy_attach_already_applied(exc):
+                raise
     except Exception as exc:
         raise MinIOProvisioningError(f"MinIO user file provisioning failed: {exc}") from exc
 
@@ -304,6 +308,15 @@ def _is_absent_error(exc: Exception) -> bool:
     return any(marker in text for marker in absent_markers)
 
 
+def _is_policy_attach_already_applied(exc: Exception) -> bool:
+    text = _safe_error_text(exc)
+    return (
+        "XMinioAdminPolicyChangeAlreadyApplied" in text
+        or "specified policy change is already in effect" in text.lower()
+        or "policy update has no net effect" in text.lower()
+    )
+
+
 def _safe_error_text(exc: object) -> str:
     text = str(exc).strip()
     return text or exc.__class__.__name__