fix: 后台加人审计按实际插入数避免全跳过记成 ok

web/src/api/mock.ts

@@ -691,13 +691,14 @@ export const mockApi = {
     return {};
   },
 
-  async addGroupMembers(id: string, memberIds: string[]): Promise<{ failed: GroupFailed[] }> {
+  async addGroupMembers(id: string, memberIds: string[]): Promise<{ failed: GroupFailed[]; added: number }> {
     requireSession();
     const g = groups.find((x) => x.id === id);
     if (!g) {
       throw new ApiError("not_found", "群不存在", 404);
     }
     const failed: GroupFailed[] = [];
+    let added = 0;
     for (const mid of memberIds) {
       if (!endpoints.some((e) => e.id === mid)) {
         failed.push({ id: mid, code: "not_found" });
@@ -705,9 +706,10 @@ export const mockApi = {
       }
       if (!g.members.some((m) => m.id === mid)) {
         g.members.push({ id: mid, joined_at_ms: now() });
+        added++;
       }
     }
-    return { failed };
+    return { failed, added };
   },
 
   async removeGroupMember(id: string, endpointId: string): Promise<Record<string, never>> {