feat(groups): allow renaming a group id

Add PUT /admin/api/groups/:id/rename (owner role) which re-points the group's routes, migrates the per-group webhook secret (tenant:{id}) and pending invites, and records an audit entry. The group editor's id field is now editable and the console renames first, then persists remaining edits under the new id.

admin/composables/useGroups.ts

@@ -70,6 +70,24 @@ export function useGroupsApi() {
     groups.value = next;
   }
 
+  /** Rename a group; routes, webhook secret and invites follow automatically. */
+  async function rename(oldId: string, newId: string): Promise<void> {
+    const res = await fetch(`/admin/api/groups/${encodeURIComponent(oldId)}/rename`, {
+      method: "PUT",
+      headers: { "content-type": "application/json" },
+      credentials: "same-origin",
+      body: JSON.stringify({ newId }),
+    });
+    if (res.status === 401) {
+      needLogin.value = true;
+      throw new Error("unauthorized");
+    }
+    if (!res.ok) {
+      const data = (await res.json().catch(() => ({}))) as { error?: string };
+      throw new Error(data.error ?? `HTTP ${res.status}`);
+    }
+  }
+
   return {
     groups,
     isSuper,
@@ -82,5 +100,6 @@ export function useGroupsApi() {
     error,
     load,
     save,
+    rename,
   };
 }

admin/composables/useI18n.ts

@@ -167,6 +167,8 @@ const en: Dict = {
   "groupEditor.id": "ID",
   "groupEditor.idPlaceholder": "my-team",
   "groupEditor.idHint": "Unique, use a-z / 0-9 / dashes",
+  "groupEditor.renameHint":
+    "Changing the id also updates routes, webhook secrets and invites that reference this group.",
   "groupEditor.language": "Message language",
   "groupEditor.langPlaceholder": "en",
   "groupEditor.langHint": "en or zh; custom via KV i18n:<lang>",
@@ -416,6 +418,7 @@ const zh: Dict = {
   "groupEditor.id": "ID",
   "groupEditor.idPlaceholder": "my-team",
   "groupEditor.idHint": "唯一，使用 a-z / 0-9 / 短横线",
+  "groupEditor.renameHint": "修改 id 会同步更新引用该分组的路由、webhook secret 与邀请链接。",
   "groupEditor.language": "消息语言",
   "groupEditor.langPlaceholder": "zh",
   "groupEditor.langHint": "en 或 zh；可通过 KV i18n:<lang> 自定义",