feat: 修改群聊日报生成与群成员信息展示

- 支持结构化 AI 群聊日报及移动端长图导出
- 支持日报时间范围和消息类型筛选
- 支持群成员及当前用户群昵称解析
- 移除消息加载更多并优化图片懒加载
- 增强头像处理与敏感密钥日志保护

src/shared/group-report.ts

@@ -0,0 +1,92 @@
+export type ReportHeat = '高' | '中' | '低'
+
+export interface ReportTopic {
+  title: string
+  timeRange: string
+  heat: ReportHeat
+  participants: string[]
+  summary: string
+  conclusion?: string
+  keywords: string[]
+}
+
+export interface ReportResource {
+  title: string
+  description: string
+  sender?: string
+}
+
+export interface ReportImportantMessage {
+  sender: string
+  time: string
+  content: string
+  note: string
+}
+
+export interface ReportQuoteMessage {
+  sender: string
+  content: string
+}
+
+export interface ReportQuote {
+  messages: ReportQuoteMessage[]
+  note: string
+}
+
+export interface ReportQuestionAnswer {
+  question: string
+  answer: string
+  answerer?: string
+}
+
+export interface ReportTopicHeat {
+  topic: string
+  score: number
+}
+
+export interface ReportSpeakerRank {
+  name: string
+  count: number
+}
+
+export interface GroupDailyReport {
+  overview: string
+  topics: ReportTopic[]
+  resources: ReportResource[]
+  importantMessages: ReportImportantMessage[]
+  quotes: ReportQuote[]
+  qa: ReportQuestionAnswer[]
+  analytics: {
+    topicHeat: ReportTopicHeat[]
+    activeTimeline: string
+    topSpeakers: ReportSpeakerRank[]
+  }
+  keywords: string[]
+}
+
+export interface GroupReportMetadata {
+  groupName: string
+  reportDate: string
+  dateRange: string
+  messageCount: number
+  activeUsers: number
+  timeSpan: string
+  generatedAt: string
+  recordNote: string
+  footerNote: string
+  heroParticipants: string[]
+  avatars: Record<string, string | undefined>
+}
+
+export interface GroupReportExportRequest {
+  report: GroupDailyReport
+  metadata: GroupReportMetadata
+}
+
+export interface GroupReportExportResult {
+  success: boolean
+  htmlPath?: string
+  pngPath?: string
+  imageDataUrl?: string
+  error?: string
+}