fix: 修复复制地址提示层级问题，改用 toast 提示

- 创建统一的 ToastUtils 工具类
- 使用 BotToast.showCustomText 确保显示在所有弹窗之上
- 更新三处复制地址的代码使用新的 toast 方案
- 添加阴影效果提升视觉层次
- 支持成功/错误/警告等多种提示类型

flutter_monisuo/build/web/main.dart.js_49.part.js

@@ -1,15 +1,15 @@
 ((a,b)=>{a[b]=a[b]||{}})(self,"$__dart_deferred_initializers__")
 $__dart_deferred_initializers__.current=function(a,b,c,$){var B,A={
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-u=new A.Yx(v,u)
-u.bd(d,w,e,w)
+b3R(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
+u=new A.YP(v,u)
+u.bf(d,w,e,w)
 y=u.a
 x=v.r
 x.toString
 y.r=x
-v.r=A.bmn(u)
+v.r=A.bo9(u)
 return u},
-bl3(d,e){var y
+bmQ(d,e){var y
 A:{if("timePicker.hours"===e){y="Stunde"
 break A}if("timePicker.minutes"===e){y="Minuute"
 break A}if("timePicker.seconds"===e){y="Sekunde"
@@ -23,38 +23,38 @@ break A}if("input.selectAll"===e){y="Alles usw\xe4hle"
 break A}if("keyboardToolbar.done"===e){y="Fertig"
 break A}y=null
 break A}return y},
-bmn(d){return new A.aRG(d)},
-Yx:function Yx(d,e){var _=this
+bo9(d){return new A.aT5(d)},
+YP:function YP(d,e){var _=this
 _.r=d
 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aMJ:function aMJ(){},
-aRG:function aRG(d){this.a=d},
-a9n:function a9n(){}}
+aO8:function aO8(){},
+aT5:function aT5(d){this.a=d},
+a9Q:function a9Q(){}}
 B=c[0]
 A=a.updateHolder(c[28],A)
-A.Yx.prototype={
+A.YP.prototype={
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 return y==null?this.a.a4(e):y},
 gb4(){var y=this,x=y.z
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-x=y.z=new A.aMJ()}return x},
-gb8(){return this.r}}
-A.aMJ.prototype={
-gbg(){return"Usschnide"},
-gbf(){return"Kopiere"},
-gbh(){return"Iif\xfcege"},
-gbc(){return"Alles usw\xe4hle"}}
-A.a9n.prototype={}
+x=y.z=new A.aO8()}return x},
+gb9(){return this.r}}
+A.aO8.prototype={
+gbh(){return"Usschnide"},
+gbg(){return"Kopiere"},
+gbi(){return"Iif\xfcege"},
+gbe(){return"Alles usw\xe4hle"}}
+A.a9Q.prototype={}
 var z=a.updateTypes([])
-A.aRG.prototype={
-$1(d){return A.bl3(this.a,d)},
+A.aT5.prototype={
+$1(d){return A.bmQ(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.a9n,B.a_)
-x(A.Yx,A.a9n)
-x(A.aMJ,B.aZ)
-x(A.aRG,B.aQ)
-y(A.a9n,B.aW)})()
-B.b3(b.typeUniverse,JSON.parse('{"Yx":{"a_":[]}}'))};
-(a=>{a["H/7vTwfEFHQd+juI6NvHRkDWdAw="]=a.current})($__dart_deferred_initializers__);
+x(A.a9Q,B.a_)
+x(A.YP,A.a9Q)
+x(A.aO8,B.aZ)
+x(A.aT5,B.aR)
+y(A.a9Q,B.aX)})()
+B.b3(b.typeUniverse,JSON.parse('{"YP":{"a_":[]}}'))};
+(a=>{a["eSbMzfUti/OnzguJ2NIw7XLzels="]=a.current})($__dart_deferred_initializers__);