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_113.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={
 b4J(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.ZH(v,u)
+u=new A.ZI(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="Khetha konke"
 break A}if("keyboardToolbar.done"===e){y="Kuqediwe"
 break A}y=null
 break A}return y},
-bnl(d){return new A.aSh(d)},
-ZH:function ZH(d,e){var _=this
+bnl(d){return new A.aSi(d)},
+ZI:function ZI(d,e){var _=this
 _.r=d
 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aP0:function aP0(){},
-aSh:function aSh(d){this.a=d},
-aaI:function aaI(){}}
+aP2:function aP2(){},
+aSi:function aSi(d){this.a=d},
+aaJ:function aaJ(){}}
 B=c[0]
 A=a.updateHolder(c[83],A)
-A.ZH.prototype={
+A.ZI.prototype={
 h(d,e){var y=this.r.a4(e)
 return y==null?this.a.a4(e):y},
 gb4(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aP0()}return x},
+x=y.z=new A.aP2()}return x},
 gb9(){return this.r}}
-A.aP0.prototype={
+A.aP2.prototype={
 gbh(){return"Sika"},
 gbg(){return"Kopisha"},
 gbi(){return"Namathisela"},
 gbe(){return"Khetha konke"}}
-A.aaI.prototype={}
+A.aaJ.prototype={}
 var z=a.updateTypes([])
-A.aSh.prototype={
+A.aSi.prototype={
 $1(d){return A.bm1(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.aaI,B.a_)
-x(A.ZH,A.aaI)
-x(A.aP0,B.aZ)
-x(A.aSh,B.aR)
-y(A.aaI,B.aX)})()
-B.b3(b.typeUniverse,JSON.parse('{"ZH":{"a_":[]}}'))};
-(a=>{a["2bi6XyiDoZsyIl6JKrNkD/BJuZk="]=a.current})($__dart_deferred_initializers__);
+x(A.aaJ,B.a_)
+x(A.ZI,A.aaJ)
+x(A.aP2,B.aZ)
+x(A.aSi,B.aR)
+y(A.aaJ,B.aX)})()
+B.b3(b.typeUniverse,JSON.parse('{"ZI":{"a_":[]}}'))};
+(a=>{a["dtqyUQCEMh1V4rcT0Gm43KyNxtY="]=a.current})($__dart_deferred_initializers__);