fix(app): 标题文字过长滚动

@@ -3,6 +3,7 @@ import 'package:doublefeel_flutter/app/models/dialog_meta_data.dart';
 import 'package:doublefeel_flutter/app/modules/home/controllers/my_controller.dart';
 import 'package:doublefeel_flutter/app/routes/app_pages.dart';
 import 'package:doublefeel_flutter/app/utils/dialog_utils.dart';
+import 'package:doublefeel_flutter/app/widget/marquee_text.dart';
 
 import 'package:doublefeel_flutter/core/network/api/user_api.dart';
 import 'package:doublefeel_flutter/core/result/app_result.dart';
@@ -417,13 +418,9 @@ class _DeleteAccountBottomSheet extends StatelessWidget {
                 children: [
                   Center(
                     child: Padding(
-                      padding: EdgeInsets.symmetric(horizontal: 72),
-                      child: Text(
-                        AppLocalizations.of(context)!
-                            .areYouSureYouWantToDeleteYourAccount,
-                        maxLines: 1,
-                        overflow: TextOverflow.ellipsis,
-                        textAlign: TextAlign.center,
+                      padding: const EdgeInsets.symmetric(horizontal: 54),
+                      child: MarqueeText(
+                        text: context.l10n.areYouSureYouWantToDeleteYourAccount,
                         style: TextStyle(
                           color: context.colors.textPrimary,
                           fontSize: 16,

+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+/// 无缝首尾相接的跑马灯文字组件：
+/// - 当文字宽度 <= 容器宽度时：正常居中/按 textAlign 静止展示
+/// - 当文字宽度 > 容器宽度时：文字向左平滑连续滚动，尾部自带留白并首尾无缝衔接循环
+class MarqueeText extends StatefulWidget {
+  const MarqueeText({
+    super.key,
+    required this.text,
+    this.style,
+    this.textAlign = TextAlign.center,
+    this.velocity = 30.0,
+    this.blankSpace = 48.0,
+    this.startDelay = const Duration(seconds: 1),
+  });
+
+  final String text;
+  final TextStyle? style;
+  final TextAlign textAlign;
+
+  /// 滚动速度（像素/秒），数值越大滚动越快，建议 25~40
+  final double velocity;
+
+  /// 首尾循环之间的间隔空白宽度（像素）
+  final double blankSpace;
+
+  /// 页面加载后首次滚动的初始延迟
+  final Duration startDelay;
+
+  @override
+  State<MarqueeText> createState() => _MarqueeTextState();
+}
+
+class _MarqueeTextState extends State<MarqueeText>
+    with SingleTickerProviderStateMixin {
+  AnimationController? _controller;
+  double _lastTextWidth = 0.0;
+  Timer? _delayTimer;
+
+  @override
+  void dispose() {
+    _delayTimer?.cancel();
+    _controller?.dispose();
+    super.dispose();
+  }
+
+  void _setupAnimation(double textWidth, double containerWidth) {
+    if (textWidth <= containerWidth || containerWidth <= 0) {
+      _delayTimer?.cancel();
+      _controller?.stop();
+      _controller?.dispose();
+      _controller = null;
+      _lastTextWidth = 0;
+      return;
+    }
+
+    final cycleDistance = textWidth + widget.blankSpace;
+    if (_controller != null && (_lastTextWidth - textWidth).abs() < 1.0) {
+      return;
+    }
+
+    _lastTextWidth = textWidth;
+    _delayTimer?.cancel();
+    _controller?.dispose();
+
+    final durationSeconds = cycleDistance / widget.velocity;
+    final totalDuration = Duration(
+      milliseconds: (durationSeconds * 1000).toInt().clamp(1000, 60000),
+    );
+
+    final controller = AnimationController(
+      vsync: this,
+      duration: totalDuration,
+    );
+    _controller = controller;
+
+    _delayTimer = Timer(widget.startDelay, () {
+      if (mounted && _controller == controller) {
+        controller.repeat();
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final effectiveStyle =
+        DefaultTextStyle.of(context).style.merge(widget.style);
+
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        final textPainter = TextPainter(
+          text: TextSpan(text: widget.text, style: effectiveStyle),
+          textDirection: Directionality.of(context),
+          maxLines: 1,
+        )..layout();
+
+        final textWidth = textPainter.width;
+        final maxWidth = constraints.maxWidth;
+
+        // 文本未超出容器宽度：普通渲染
+        if (textWidth <= maxWidth || maxWidth.isInfinite) {
+          _setupAnimation(0, 0);
+          return Text(
+            widget.text,
+            style: widget.style,
+            textAlign: widget.textAlign,
+            maxLines: 1,
+          );
+        }
+
+        // 文本超出容器宽度：开启首尾无缝循环跑马灯
+        _setupAnimation(textWidth, maxWidth);
+        final cycleDistance = textWidth + widget.blankSpace;
+        final repeatCount = (maxWidth / cycleDistance).ceil() + 2;
+
+        final controller = _controller;
+        if (controller == null) {
+          return Text(
+            widget.text,
+            style: widget.style,
+            maxLines: 1,
+          );
+        }
+
+        return ClipRect(
+          child: AnimatedBuilder(
+            animation: controller,
+            builder: (context, child) {
+              final offset = controller.value * cycleDistance;
+              return Transform.translate(
+                offset: Offset(-offset, 0),
+                child: child,
+              );
+            },
+            child: OverflowBox(
+              alignment: Alignment.centerLeft,
+              minWidth: 0.0,
+              maxWidth: double.infinity,
+              minHeight: 0.0,
+              maxHeight: constraints.hasBoundedHeight ? constraints.maxHeight : null,
+              child: Row(
+                mainAxisSize: MainAxisSize.min,
+                children: List.generate(
+                  repeatCount,
+                  (_) => Padding(
+                    padding: EdgeInsets.only(right: widget.blankSpace),
+                    child: Text(
+                      widget.text,
+                      style: widget.style,
+                      maxLines: 1,
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          ),
+        );
+      },
+    );
+  }
+}