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_43.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={
-b3M(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.YL(v,u)
+b3W(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.bof(u)
+v.r=A.bos(u)
 return u},
-bmW(d,e){var y
+bn8(d,e){var y
 A:{if("timePicker.hours"===e){y="Tunnit"
 break A}if("timePicker.minutes"===e){y="Minuutit"
 break A}if("timePicker.seconds"===e){y="Sekunnit"
@@ -23,38 +23,38 @@ break A}if("input.selectAll"===e){y="Valitse kaikki"
 break A}if("keyboardToolbar.done"===e){y="Valmis"
 break A}y=null
 break A}return y},
-bof(d){return new A.aTc(d)},
-YL:function YL(d,e){var _=this
+bos(d){return new A.aTk(d)},
+YP:function YP(d,e){var _=this
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 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aO5:function aO5(){},
-aTc:function aTc(d){this.a=d},
-a9M:function a9M(){}}
+aOb:function aOb(){},
+aTk:function aTk(d){this.a=d},
+a9Q:function a9Q(){}}
 B=c[0]
 A=a.updateHolder(c[23],A)
-A.YL.prototype={
+A.YP.prototype={
 h(d,e){var y=this.r.a4(e)
 return y==null?this.a.a4(e):y},
 gb4(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aO5()}return x},
+x=y.z=new A.aOb()}return x},
 gb9(){return this.r}}
-A.aO5.prototype={
+A.aOb.prototype={
 gbh(){return"Leikkaa"},
 gbg(){return"Kopioi"},
 gbi(){return"Liit\xe4"},
 gbe(){return"Valitse kaikki"}}
-A.a9M.prototype={}
+A.a9Q.prototype={}
 var z=a.updateTypes([])
-A.aTc.prototype={
-$1(d){return A.bmW(this.a,d)},
+A.aTk.prototype={
+$1(d){return A.bn8(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.a9M,B.a_)
-x(A.YL,A.a9M)
-x(A.aO5,B.aZ)
-x(A.aTc,B.aR)
-y(A.a9M,B.aX)})()
-B.b3(b.typeUniverse,JSON.parse('{"YL":{"a_":[]}}'))};
-(a=>{a["pnamnKkl28EaqETFlfP0elr3lRA="]=a.current})($__dart_deferred_initializers__);
+x(A.a9Q,B.a_)
+x(A.YP,A.a9Q)
+x(A.aOb,B.aZ)
+x(A.aTk,B.aR)
+y(A.a9Q,B.aX)})()
+B.b4(b.typeUniverse,JSON.parse('{"YP":{"a_":[]}}'))};
+(a=>{a["yTq1TBRZxCT5iN2qdfpE3VolCXM="]=a.current})($__dart_deferred_initializers__);