feat: 为划转页面切换按钮添加旋转动画

- 添加 180° 旋转动画效果
- 使用 CurvedAnimation 实现平滑过渡
- 动画时长 300ms，使用 easeInOut 曲线
- 提升用户体验，交互更流畅自然

flutter_monisuo/build/web/main.dart.js_43.part.js

@@ -1,7 +1,7 @@
 ((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.YK(v,u)
+u=new A.YL(v,u)
 u.bf(d,w,e,w)
 y=u.a
 x=v.r
@@ -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.aTb(d)},
-YK:function YK(d,e){var _=this
+bof(d){return new A.aTc(d)},
+YL:function YL(d,e){var _=this
 _.r=d
 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aO3:function aO3(){},
-aTb:function aTb(d){this.a=d},
-a9L:function a9L(){}}
+aO5:function aO5(){},
+aTc:function aTc(d){this.a=d},
+a9M:function a9M(){}}
 B=c[0]
 A=a.updateHolder(c[23],A)
-A.YK.prototype={
+A.YL.prototype={
 h(d,e){var y=this.r.a4(e)
 return y==null?this.a.a4(e):y},
 gb4(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aO3()}return x},
+x=y.z=new A.aO5()}return x},
 gb9(){return this.r}}
-A.aO3.prototype={
+A.aO5.prototype={
 gbh(){return"Leikkaa"},
 gbg(){return"Kopioi"},
 gbi(){return"Liit\xe4"},
 gbe(){return"Valitse kaikki"}}
-A.a9L.prototype={}
+A.a9M.prototype={}
 var z=a.updateTypes([])
-A.aTb.prototype={
+A.aTc.prototype={
 $1(d){return A.bmW(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.a9L,B.a_)
-x(A.YK,A.a9L)
-x(A.aO3,B.aZ)
-x(A.aTb,B.aR)
-y(A.a9L,B.aX)})()
-B.b3(b.typeUniverse,JSON.parse('{"YK":{"a_":[]}}'))};
-(a=>{a["BFMMBrM7nE3027Y7xmxbJ1Zv+5Y="]=a.current})($__dart_deferred_initializers__);
+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__);