feat: 为划转页面账户卡片添加位置互换动画

- 移除按钮旋转动画，保持按钮静止
- 两个账户卡片（从/到）平滑互换位置
- 使用 AnimatedSwitcher + FadeTransition + SlideTransition
- 动画时长 300ms，easeOut 曲线
- 上方卡片向上滑出，下方卡片向下滑入
- 视觉效果更流畅自然

flutter_monisuo/build/web/main.dart.js_86.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={
-b4j(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.Zi(v,u)
+b4t(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
+u=new A.Zm(v,u)
 u.bf(d,w,e,w)
 y=u.a
 x=v.r
 x.toString
 y.r=x
-v.r=A.bnE(u)
+v.r=A.bnR(u)
 return u},
-bmk(d,e){var y
+bmx(d,e){var y
 A:{if("timePicker.hours"===e){y="Timer"
 break A}if("timePicker.minutes"===e){y="Minutter"
 break A}if("timePicker.seconds"===e){y="Sekunder"
@@ -23,38 +23,38 @@ break A}if("input.selectAll"===e){y="Merk alt"
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 break A}y=null
 break A}return y},
-bnE(d){return new A.aSB(d)},
-Zi:function Zi(d,e){var _=this
+bnR(d){return new A.aSJ(d)},
+Zm:function Zm(d,e){var _=this
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 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aOD:function aOD(){},
-aSB:function aSB(d){this.a=d},
-aaj:function aaj(){}}
+aOJ:function aOJ(){},
+aSJ:function aSJ(d){this.a=d},
+aan:function aan(){}}
 B=c[0]
 A=a.updateHolder(c[57],A)
-A.Zi.prototype={
+A.Zm.prototype={
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 return y==null?this.a.a4(e):y},
 gb4(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aOD()}return x},
+x=y.z=new A.aOJ()}return x},
 gb9(){return this.r}}
-A.aOD.prototype={
+A.aOJ.prototype={
 gbh(){return"Klipp ut"},
 gbg(){return"Kopier"},
 gbi(){return"Lim inn"},
 gbe(){return"Merk alt"}}
-A.aaj.prototype={}
+A.aan.prototype={}
 var z=a.updateTypes([])
-A.aSB.prototype={
-$1(d){return A.bmk(this.a,d)},
+A.aSJ.prototype={
+$1(d){return A.bmx(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.aaj,B.a_)
-x(A.Zi,A.aaj)
-x(A.aOD,B.aZ)
-x(A.aSB,B.aR)
-y(A.aaj,B.aX)})()
-B.b3(b.typeUniverse,JSON.parse('{"Zi":{"a_":[]}}'))};
-(a=>{a["G28p8Ci5HMInUAQA+T8Nm9RVP/c="]=a.current})($__dart_deferred_initializers__);
+x(A.aan,B.a_)
+x(A.Zm,A.aan)
+x(A.aOJ,B.aZ)
+x(A.aSJ,B.aR)
+y(A.aan,B.aX)})()
+B.b4(b.typeUniverse,JSON.parse('{"Zm":{"a_":[]}}'))};
+(a=>{a["gHiFRVYEh8gk72r6UTK2fZpS+W4="]=a.current})($__dart_deferred_initializers__);