fix: 优化群聊展示与群日报生成

src/preload/index.d.ts

@@ -38,6 +38,7 @@ declare global {
         key: string
       ) => Promise<boolean | { success: boolean; error?: string; monitoring?: boolean }>
       getContacts: (filter?: string) => Promise<Contact[]>
+      getContactAvatars: (usernames: string[]) => Promise<Record<string, string>>
       getMessages: (userMd5: string, startTime?: number, endTime?: number) => Promise<Message[]>
       getGroupSnapshot: (userMd5: string) => Promise<{
         roomId: string

src/preload/index.ts

@@ -6,6 +6,7 @@ import { GroupReportExportRequest } from '../shared/group-report'
 const api = {
   initDb: (key: string) => ipcRenderer.invoke('db:init', key),
   getContacts: (filter?: string) => ipcRenderer.invoke('db:getContacts', filter),
+  getContactAvatars: (usernames: string[]) => ipcRenderer.invoke('db:getContactAvatars', usernames),
   getMessages: (userMd5: string, startTime?: number, endTime?: number) =>
     ipcRenderer.invoke('db:getMessages', userMd5, startTime, endTime),
   getGroupSnapshot: (userMd5: string) => ipcRenderer.invoke('db:getGroupSnapshot', userMd5),