feat(mobile): UI-01 upload center, capture and auxiliary pages

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

apps/mobile/test/pages/capture_page_test.dart

@@ -191,7 +191,7 @@ void main() {
   testWidgets('快门即拍即入队：任务落库 queued + 待传徽章 1', (tester) async {
     await pumpCapture(tester);
     expect(find.text('PREVIEW_MARK'), findsOneWidget, reason: '相机预览就绪');
-    expect(find.text('Pending 0'), findsOneWidget);
+    expect(find.text('Queued 0'), findsOneWidget);
 
     await shoot(tester);
 
@@ -202,7 +202,39 @@ void main() {
     expect(tasks.single.albumId, 'alb-1');
     expect(tasks.single.categoryId, isNull, reason: '默认分类');
     expect(tasks.single.filename, 'IMG_0001.jpg');
-    expect(find.text('Pending 1'), findsOneWidget, reason: '徽章实时刷新');
+    expect(find.text('Queued 1'), findsOneWidget, reason: '徽章实时刷新');
+  });
+
+  testWidgets('入队成功反馈：短暂浮层出现（不逐张弹确认，§4.5）',
+      (tester) async {
+    await pumpCapture(tester);
+
+    // 与 pressRealIo 同法但缩短真实等待（80ms < 200ms 反馈窗）：入队链路
+    // 完成时浮层已翻转、计时器未到期，可在窗内断言不透明度 > 0。
+    final button = find
+        .ancestor(of: find.byIcon(Icons.camera), matching: find.byType(IconButton))
+        .evaluate()
+        .single
+        .widget as IconButton;
+    await tester.runAsync(() async {
+      button.onPressed!();
+      await Future<void>.delayed(const Duration(milliseconds: 80));
+    });
+    await tester.pump(const Duration(milliseconds: 180));
+
+    // 反馈浮层淡入完成（AnimatedOpacity → 1），文案为「已加入队列」。
+    expect(
+      tester.widget<AnimatedOpacity>(find.byType(AnimatedOpacity).first).opacity,
+      greaterThan(0),
+      reason: '200ms 反馈窗内浮层可见',
+    );
+    expect(find.text('Added to queue'), findsOneWidget);
+    // 等待 200ms 反馈计时器在真实事件循环中到期，避免悬挂计时器；随后
+    // fake pump 冲刷淡出动画帧。
+    await tester.runAsync(
+      () async => Future<void>.delayed(const Duration(milliseconds: 250)),
+    );
+    await tester.pump(const Duration(milliseconds: 400));
   });
 
   testWidgets('连拍两张串行入队（不逐张确认）', (tester) async {
@@ -215,7 +247,7 @@ void main() {
       'IMG_0001.jpg',
       'IMG_0002.jpg',
     ]));
-    expect(find.text('Pending 2'), findsOneWidget);
+    expect(find.text('Queued 2'), findsOneWidget);
   });
 
   testWidgets('分类切换：hint 提示 + 仅影响之后拍摄（A15 归属不变）',