feat: 管理员可删除内置技能并管理技能内文件

新增内置技能删除与技能文件删除 API，允许管理员编辑/删除内置技能文件；技能设置页与文件预览弹窗同步支持删除操作。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-web/src/core/i18n/locales/en-US.ts

@@ -545,10 +545,13 @@ export const enUS: Translations = {
       filesSaveAction: "Save",
       filesCancelEditAction: "Cancel",
       filesDownloadAction: "Download",
-      filesCopyPathAction: "Copy path",
-      filesDiscardConfirm: "Discard unsaved changes?",
-      filesSaveSuccess: "File saved",
-      filesReadOnlyHint: "Built-in skills are read-only.",
+      filesCopyPathAction: "Copy path",
+      filesDiscardConfirm: "Discard unsaved changes?",
+      filesSaveSuccess: "File saved",
+      filesDeleteAction: "Delete",
+      filesDeleteConfirm: "Delete \"{path}\"? This cannot be undone.",
+      filesDeleteSuccess: "File deleted",
+      filesReadOnlyHint: "Only administrators can edit or delete built-in skill files.",
       viewDetailAction: "View skill details",
       stateSheet: {
         archivedTitle: "Archived skills",

frontend-web/src/core/i18n/locales/types.ts

@@ -475,10 +475,13 @@ export interface Translations {
       filesSaveAction: string;
       filesCancelEditAction: string;
       filesDownloadAction: string;
-      filesCopyPathAction: string;
-      filesDiscardConfirm: string;
-      filesSaveSuccess: string;
-      filesReadOnlyHint: string;
+      filesCopyPathAction: string;
+      filesDiscardConfirm: string;
+      filesSaveSuccess: string;
+      filesDeleteAction: string;
+      filesDeleteConfirm: string;
+      filesDeleteSuccess: string;
+      filesReadOnlyHint: string;
       viewDetailAction: string;
       stateSheet: {
         archivedTitle: string;

frontend-web/src/core/i18n/locales/zh-CN.ts

@@ -524,8 +524,11 @@ export const zhCN: Translations = {
       filesDownloadAction: "下载",
       filesCopyPathAction: "复制路径",
       filesDiscardConfirm: "有未保存的修改,确定放弃吗?",
-      filesSaveSuccess: "文件已保存",
-      filesReadOnlyHint: "内置技能为只读,仅可查看。",
+      filesSaveSuccess: "文件已保存",
+      filesDeleteAction: "删除",
+      filesDeleteConfirm: "确定删除“{path}”？该操作不可撤销。",
+      filesDeleteSuccess: "文件已删除",
+      filesReadOnlyHint: "仅管理员可以编辑或删除内置技能文件。",
       viewDetailAction: "查看技能详情",
       stateSheet: {
         archivedTitle: "归档的技能",

frontend-web/src/core/skills/api.ts

@@ -402,15 +402,26 @@ export async function getSkillContent(
   return response.json() as Promise<SkillContentResponse>;
 }
 
-export async function deleteCustomSkill(skillName: string): Promise<void> {
+export async function deleteCustomSkill(skillName: string): Promise<void> {
   const response = await apiFetch(
     `${getBackendBaseURL()}/api/skills/custom/${encodeURIComponent(skillName)}`,
     { method: "DELETE" },
   );
   if (!response.ok) {
     throw await parseDetailedError(response, "Failed to delete skill");
-  }
-}
+  }
+}
+
+/** Delete a built-in skill. The backend permits this only for administrators. */
+export async function deleteBuiltinSkill(skillName: string): Promise<void> {
+  const response = await apiFetch(
+    `${getBackendBaseURL()}/api/skills/${encodeURIComponent(skillName)}`,
+    { method: "DELETE" },
+  );
+  if (!response.ok) {
+    throw await parseDetailedError(response, "Failed to delete built-in skill");
+  }
+}
 
 export interface SkillFileNode {
   name: string;
@@ -479,7 +490,7 @@ export function getSkillFileDownloadURL(skillName: string, path: string): string
   );
 }
 
-export async function saveSkillFile(
+export async function saveSkillFile(
   skillName: string,
   path: string,
   content: string,
@@ -494,9 +505,22 @@ export async function saveSkillFile(
   );
   if (!response.ok) {
     throw await parseDetailedError(response, "Failed to save skill file");
-  }
-  return response.json() as Promise<SkillFileSaveResponse>;
-}
+  }
+  return response.json() as Promise<SkillFileSaveResponse>;
+}
+
+export async function deleteSkillFile(
+  skillName: string,
+  path: string,
+): Promise<void> {
+  const url =
+    `${getBackendBaseURL()}/api/skills/${encodeURIComponent(skillName)}/files/content` +
+    `?path=${encodeURIComponent(path)}`;
+  const response = await apiFetch(url, { method: "DELETE" });
+  if (!response.ok) {
+    throw await parseDetailedError(response, "Failed to delete skill file");
+  }
+}
 
 export interface SkillNameZhResponse {
   name: string;

frontend-web/src/core/skills/hooks.ts

@@ -5,8 +5,10 @@ import {
   useQueryClient,
 } from "@tanstack/react-query";
 
-import {
-  deleteCustomSkill,
+import {
+  deleteBuiltinSkill,
+  deleteCustomSkill,
+  deleteSkillFile,
   duplicateSkill,
   enableSkill,
   generateMissingSkillNameZh,
@@ -318,7 +320,7 @@ export function useSkillFileContent(skillName: string | null, path: string | nul
   });
 }
 
-export function useSaveSkillFile() {
+export function useSaveSkillFile() {
   const queryClient = useQueryClient();
   return useMutation({
     mutationFn: ({
@@ -339,5 +341,33 @@ export function useSaveSkillFile() {
         void queryClient.invalidateQueries({ queryKey: ["skill", skillName] });
       }
     },
-  });
-}
+  });
+}
+
+export function useDeleteSkillFile() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: ({
+      skillName,
+      path,
+    }: {
+      skillName: string;
+      path: string;
+    }) => deleteSkillFile(skillName, path),
+    onSuccess: (_data, { skillName, path }) => {
+      void queryClient.invalidateQueries({ queryKey: ["skill-files", skillName] });
+      void queryClient.removeQueries({ queryKey: ["skill-file", skillName, path] });
+    },
+  });
+}
+
+export function useDeleteBuiltinSkill() {
+  const queryClient = useQueryClient();
+  return useMutation({
+    mutationFn: deleteBuiltinSkill,
+    onSuccess: () => {
+      void queryClient.invalidateQueries({ queryKey: ["skills"] });
+      void queryClient.invalidateQueries({ queryKey: ["admin-skills"] });
+    },
+  });
+}