fix: 彻底修复 flow-anim.dart Obx 嵌套导致的页面卡死

- 移除 FlowingBorderContainer 内部的 Obx 和 ThemeController
- FlowingBorderContainer 不再自行监听主题色变化
- 颜色通过 widget.color 参数从外部传入
- poetry.dart 中传入 primaryColor 变量
- 避免 Obx 嵌套导致的 GetX 异常

lib/views/profile/level/flow-anim.dart

@@ -1,9 +1,7 @@
 import 'dart:math';
 
 import 'package:flutter/material.dart';
-import 'package:get/get.dart';
 
-import '../../../services/get/theme_controller.dart';
 import '../../../models/colors/theme_colors.dart';
 
 /// 流动边框装饰器
@@ -84,7 +82,6 @@ class _FlowingBorderContainerState extends State<FlowingBorderContainer>
     with SingleTickerProviderStateMixin {
   late AnimationController _controller;
   late Animation<double> _animation;
-  final ThemeController _themeController = Get.find<ThemeController>();
 
   @override
   void initState() {
@@ -111,21 +108,15 @@ class _FlowingBorderContainerState extends State<FlowingBorderContainer>
     return AnimatedBuilder(
       animation: _animation,
       builder: (context, child) {
-        return Obx(() {
-          final color =
-              widget.color ??
-              ThemeColors.getThemeColor(_themeController.themeColorIndexRx.value);
-
         return Container(
           padding: EdgeInsets.all(widget.width),
           decoration: FlowingBorderDecoration(
             animation: _animation,
-              color: color,
+            color: widget.color ?? ThemeColors.getThemeColor(0),
             width: widget.width,
           ),
           child: widget.child,
         );
-        });
       },
     );
   }

lib/views/profile/level/poetry.dart

@@ -743,8 +743,7 @@ class _PoetryLevelPageState extends State<PoetryLevelPage>
                                                             : Colors.white,
                                                       ),
                                                     ),
-                                                    color: AppConstants
-                                                        .primaryColor,
+                                                    color: primaryColor,
                                                     width: 4,
                                                   ),
                                                 ),