fix: 优化移动端导出消息布局与计数

- 调整移动端消息栈宽度，统一约束来源标签与消息内容\n- 精简档案计数文案，移除虚拟窗口已显示数量\n- 补充搜索前后消息保持单行展示的移动端回归测试

src/main/export-html-template.ts

@@ -789,8 +789,8 @@ body {
     overscroll-behavior-x: none;
     touch-action: pan-y;
   }
-  .message:not(.system) .bubble { max-width: calc(100% - 50px); }
-  .message:not(.system) .row.has-locate .bubble { max-width: calc(100% - 90px); }
+  .message:not(.system) .message-stack { max-width: calc(100% - 50px); }
+  .message:not(.system) .row.has-locate .message-stack { max-width: calc(100% - 90px); }
   .audio-wrap { width: min(260px, 100%); }
 }
 `
@@ -1367,12 +1367,10 @@ const renderExportScript = (name: string): string => `
     })
   }
   const updateCount = () => {
-    const shown = Math.max(0, windowEnd - windowStart)
     const scopeTotal = activeConversation === 'all'
       ? allMessages.length
       : allMessages.filter((message) => message.exportConversationId === activeConversation).length
-    const scopeLabel = activeConversation === 'all' ? '全部' : '当前聊天'
-    count.textContent = '已显示 ' + shown + ' / 筛选 ' + filtered.length + ' / ' + scopeLabel + ' ' + scopeTotal
+    count.textContent = '筛选 ' + filtered.length + ' / 全部 ' + scopeTotal
   }
   const setScrollTop = (value) => {
     scrollLoadSuppressed = true

tests/e2e/export-archive.spec.ts

@@ -256,6 +256,21 @@ test('EXPORT-ARCHIVE-01 merged v2 archive is usable offline on desktop and mobil
     ).toBeLessThanOrEqual(1)
     expect(compactControlBounds.searchWidth).toBeGreaterThan(compactControlBounds.conversationWidth)
     expect(compactControlBounds.searchFontSize).toBe('16px')
+    const personalMessageContent = page
+      .locator('.message')
+      .filter({ hasText: '个人聊天消息' })
+      .locator('.content')
+    const expectPersonalMessageOnOneLine = async (): Promise<void> => {
+      const metrics = await personalMessageContent.evaluate((element) => {
+        const styles = getComputedStyle(element)
+        return {
+          height: element.getBoundingClientRect().height,
+          lineHeight: Number.parseFloat(styles.lineHeight)
+        }
+      })
+      expect(metrics.height).toBeLessThanOrEqual(metrics.lineHeight + 1)
+    }
+    await expectPersonalMessageOnOneLine()
     await expect(conversationTrigger.locator('.conversation-switch-icon')).toHaveCSS(
       'width',
       '13px'
@@ -276,6 +291,7 @@ test('EXPORT-ARCHIVE-01 merged v2 archive is usable offline on desktop and mobil
     await expect(searchInput).toBeVisible()
     await searchInput.fill('个人聊天消息')
     await expect(page.locator('.search-highlight')).toHaveText('个人聊天消息')
+    await expectPersonalMessageOnOneLine()
     const mobileSearchResult = page.locator('.message')
     const mobileLocateButton = mobileSearchResult.getByRole('button', {
       name: '定位到聊天位置'

tests/unit/export-media.test.ts

@@ -73,9 +73,7 @@ describe('export media', () => {
     dom.window.eval(inlineScriptOf(html))
 
     expect(dom.window.document.querySelectorAll('.message')).toHaveLength(EXPORT_PAGE_SIZE)
-    expect(dom.window.document.querySelector('#count')?.textContent).toBe(
-      '已显示 240 / 筛选 500 / 全部 500'
-    )
+    expect(dom.window.document.querySelector('#count')?.textContent).toBe('筛选 500 / 全部 500')
     const list = dom.window.document.querySelector('#messages')!
     expect(list.querySelector('.message')?.getAttribute('data-index')).toBe('260')
 
@@ -154,9 +152,7 @@ describe('export media', () => {
       'https://example.com/xi'
     )
     expect(dom.window.document.querySelectorAll('.search-highlight')).toHaveLength(1)
-    expect(dom.window.document.querySelector('#count')?.textContent).toBe(
-      '已显示 1 / 筛选 1 / 全部 2'
-    )
+    expect(dom.window.document.querySelector('#count')?.textContent).toBe('筛选 1 / 全部 2')
     dom.window.close()
   })
 
@@ -191,25 +187,19 @@ describe('export media', () => {
     expect(trigger.textContent).toContain('全部聊天')
     expect(menu.querySelectorAll('[data-conversation-id]')).toHaveLength(3)
     expect(dom.window.document.querySelectorAll('.conversation-source')).toHaveLength(3)
-    expect(dom.window.document.querySelector('#count')?.textContent).toBe(
-      '已显示 3 / 筛选 3 / 全部 3'
-    )
+    expect(dom.window.document.querySelector('#count')?.textContent).toBe('筛选 3 / 全部 3')
     trigger.click()
     ;(menu.querySelector('[data-conversation-id="alpha"]') as HTMLButtonElement).click()
     expect(dom.window.document.querySelectorAll('.message')).toHaveLength(2)
     expect(dom.window.document.querySelectorAll('.conversation-source')).toHaveLength(0)
-    expect(dom.window.document.querySelector('#count')?.textContent).toBe(
-      '已显示 2 / 筛选 2 / 当前聊天 2'
-    )
+    expect(dom.window.document.querySelector('#count')?.textContent).toBe('筛选 2 / 全部 2')
     expect(dom.window.document.querySelectorAll('.timeline-month')).toHaveLength(2)
 
     const search = dom.window.document.querySelector('#query') as HTMLInputElement
     search.value = '共同关键词'
     search.dispatchEvent(new dom.window.Event('input'))
     expect(dom.window.document.querySelectorAll('.message')).toHaveLength(1)
-    expect(dom.window.document.querySelector('#count')?.textContent).toBe(
-      '已显示 1 / 筛选 1 / 当前聊天 2'
-    )
+    expect(dom.window.document.querySelector('#count')?.textContent).toBe('筛选 1 / 全部 2')
     dom.window.close()
   })