feat(app): 服务端历史行首缩略图 + 上传中心空态引导至服务端历史

- UploadSessionPhoto 解析可选 preview；历史行首有 thumb 渲染 PhotoThumbnail
 （SizedBox 定寸——Row 内裸 AspectRatio 无界约束），缺省回退中性占位
- 上传中心整体空态加「仅本机存储」说明 + 「查看服务端历史」tonal 按钮
 （与右上 History 同路由）；「需关注」空态保持专属文案不加引导
- l10n 增 queueEmptyDeviceHint / queueViewServerHistory

Co-Authored-By: Claude Code <noreply@anthropic.com>

apps/mobile/lib/l10n/app_en.arb

@@ -230,6 +230,8 @@
   "queueTimeLast7Days": "Last 7 days",
   "queueTimeLast30Days": "Last 30 days",
   "queueEmpty": "No upload tasks",
+  "queueEmptyDeviceHint": "Upload records live on this device only and are cleared on reinstall",
+  "queueViewServerHistory": "View server history",
   "queueRetryAllFailed": "Retry all failed",
   "queueAttemptCount": "{count} attempt(s)",
   "@queueAttemptCount": {

apps/mobile/lib/l10n/app_localizations.dart

@@ -1268,6 +1268,18 @@ abstract class AppLocalizations {
   /// **'暂无上传任务'**
   String get queueEmpty;
 
+  /// No description provided for @queueEmptyDeviceHint.
+  ///
+  /// In zh, this message translates to:
+  /// **'上传记录仅保存在本机，卸载重装后不会保留'**
+  String get queueEmptyDeviceHint;
+
+  /// No description provided for @queueViewServerHistory.
+  ///
+  /// In zh, this message translates to:
+  /// **'查看服务端历史'**
+  String get queueViewServerHistory;
+
   /// No description provided for @queueRetryAllFailed.
   ///
   /// In zh, this message translates to:

apps/mobile/lib/l10n/app_localizations_en.dart

@@ -622,6 +622,13 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get queueEmpty => 'No upload tasks';
 
+  @override
+  String get queueEmptyDeviceHint =>
+      'Upload records live on this device only and are cleared on reinstall';
+
+  @override
+  String get queueViewServerHistory => 'View server history';
+
   @override
   String get queueRetryAllFailed => 'Retry all failed';
 

apps/mobile/lib/l10n/app_localizations_zh.dart

@@ -604,6 +604,12 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get queueEmpty => '暂无上传任务';
 
+  @override
+  String get queueEmptyDeviceHint => '上传记录仅保存在本机，卸载重装后不会保留';
+
+  @override
+  String get queueViewServerHistory => '查看服务端历史';
+
   @override
   String get queueRetryAllFailed => '一键重试全部失败';
 

apps/mobile/lib/l10n/app_zh.arb

@@ -230,6 +230,8 @@
   "queueTimeLast7Days": "近7天",
   "queueTimeLast30Days": "近30天",
   "queueEmpty": "暂无上传任务",
+  "queueEmptyDeviceHint": "上传记录仅保存在本机，卸载重装后不会保留",
+  "queueViewServerHistory": "查看服务端历史",
   "queueRetryAllFailed": "一键重试全部失败",
   "queueAttemptCount": "已尝试 {count} 次",
   "@queueAttemptCount": {