fix: 完善聊天解析与导出体验

- 修复引用消息名称和图片布局
- 明确单会话图片测试日志范围
- 支持导出文件附件
- 完善图片批测、会话刷新和安全退出

tests/unit/quoted-messages.test.ts

@@ -0,0 +1,35 @@
+import { describe, expect, it } from 'vitest'
+import type { Message } from '../../src/shared/types'
+import { enrichQuotedMessages } from '../../src/renderer/src/utils/quoted-messages'
+
+const message = (overrides: Partial<Message>): Message => ({
+  id: 'fixture',
+  from: 'user',
+  type: '普通文本',
+  datetime: '2026-08-04 12:00:00',
+  content: '',
+  isSender: false,
+  createTime: 1_785_816_000,
+  ...overrides
+})
+
+describe('quoted message enrichment', () => {
+  it('maps an internal quoted sender id to the loaded group member name', () => {
+    const quoted = message({
+      id: 'quote',
+      contentData: {
+        type: 'quote',
+        content: '回复',
+        quotedContent: '[图片]',
+        quotedSender: 'wxid_fixture_member',
+        quotedImageMd5: 'a'.repeat(32)
+      }
+    })
+
+    const [result] = enrichQuotedMessages([quoted], [quoted], (senderId) =>
+      senderId === 'wxid_fixture_member' ? '测试群成员' : undefined
+    )
+
+    expect(result.contentData).toMatchObject({ quotedSender: '测试群成员' })
+  })
+})