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_104.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={
-b4A(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.Zz(v,u)
+b4K(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
+u=new A.ZD(v,u)
 u.bf(d,w,e,w)
 y=u.a
 x=v.r
 x.toString
 y.r=x
-v.r=A.boC(u)
+v.r=A.boP(u)
 return u},
-bni(d,e){var y
+bnv(d,e){var y
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@@ -23,38 +23,38 @@ break A}if("input.selectAll"===e){y="\u0e40\u0e25\u0e37\u0e2d\u0e01\u0e17\u0e31\
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 break A}y=null
 break A}return y},
-boC(d){return new A.aTz(d)},
-Zz:function Zz(d,e){var _=this
+boP(d){return new A.aTH(d)},
+ZD:function ZD(d,e){var _=this
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 _.z=_.w=$
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-aOU:function aOU(){},
-aTz:function aTz(d){this.a=d},
-aaA:function aaA(){}}
+aP_:function aP_(){},
+aTH:function aTH(d){this.a=d},
+aaE:function aaE(){}}
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 A=a.updateHolder(c[74],A)
-A.Zz.prototype={
+A.ZD.prototype={
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-x=y.z=new A.aOU()}return x},
+x=y.z=new A.aP_()}return x},
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-A.aOU.prototype={
+A.aP_.prototype={
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-A.aaA.prototype={}
+A.aaE.prototype={}
 var z=a.updateTypes([])
-A.aTz.prototype={
-$1(d){return A.bni(this.a,d)},
+A.aTH.prototype={
+$1(d){return A.bnv(this.a,d)},
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-x(A.aaA,B.a_)
-x(A.Zz,A.aaA)
-x(A.aOU,B.aZ)
-x(A.aTz,B.aR)
-y(A.aaA,B.aX)})()
-B.b3(b.typeUniverse,JSON.parse('{"Zz":{"a_":[]}}'))};
-(a=>{a["csIv2cjyMd1SO0YjCqnyrsPdfNA="]=a.current})($__dart_deferred_initializers__);
+x(A.aaE,B.a_)
+x(A.ZD,A.aaE)
+x(A.aP_,B.aZ)
+x(A.aTH,B.aR)
+y(A.aaE,B.aX)})()
+B.b4(b.typeUniverse,JSON.parse('{"ZD":{"a_":[]}}'))};
+(a=>{a["+PtWhGDihbOdikwXYaAMbtVGxB0="]=a.current})($__dart_deferred_initializers__);