fix(ui): 对齐所有页面样式到 Pencil 设计规范

transfer_page.dart:
- 金色主题统一（Light: secondary #F59E0B, Dark: primary #D4AF37）
- 修复交换按钮和确认按钮颜色

home_page.dart:
- Asset Card 圆角 14px
- 总资产字号 28px (displayLarge)
- "预估总资产"字号 13px (bodyLarge)
- 盈亏标签/数值字重调整

quick_actions_row.dart:
- padding 统一为 16px

welfare_center_page.dart:
- _statusBadge padding [6, 14]

trade_form_card.dart / price_card.dart:
- 样式细节对齐

flutter_monisuo/build/web/main.dart.js_29.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={
 b57(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.Zz(v,u)
+u=new A.Zy(v,u)
 u.bg(d,w,e,w)
 y=u.a
 x=v.r
@@ -23,38 +23,38 @@ break A}if("input.selectAll"===e){y="Dewis y cyfan"
 break A}if("keyboardToolbar.done"===e){y="Gorffen"
 break A}y=null
 break A}return y},
-bpN(d){return new A.aUO(d)},
-Zz:function Zz(d,e){var _=this
+bpN(d){return new A.aUP(d)},
+Zy:function Zy(d,e){var _=this
 _.r=d
 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aPB:function aPB(){},
-aUO:function aUO(d){this.a=d},
-aaD:function aaD(){}}
+aPC:function aPC(){},
+aUP:function aUP(d){this.a=d},
+aaC:function aaC(){}}
 B=c[0]
 A=a.updateHolder(c[15],A)
-A.Zz.prototype={
+A.Zy.prototype={
 h(d,e){var y=this.r.a4(e)
 return y==null?this.a.a4(e):y},
 gb8(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aPB()}return x},
+x=y.z=new A.aPC()}return x},
 gbc(){return this.r}}
-A.aPB.prototype={
+A.aPC.prototype={
 gbi(){return"Torri"},
 gbh(){return"Cop\xefo"},
 gbj(){return"Gludo"},
 gbf(){return"Dewis y cyfan"}}
-A.aaD.prototype={}
+A.aaC.prototype={}
 var z=a.updateTypes([])
-A.aUO.prototype={
+A.aUP.prototype={
 $1(d){return A.bot(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.aaD,B.a_)
-x(A.Zz,A.aaD)
-x(A.aPB,B.b2)
-x(A.aUO,B.aU)
-y(A.aaD,B.b0)})()
-B.b8(b.typeUniverse,JSON.parse('{"Zz":{"a_":[]}}'))};
-(a=>{a["t8CMXVayEwMJ3FwfcgzbwU4XbAQ="]=a.current})($__dart_deferred_initializers__);
+x(A.aaC,B.a_)
+x(A.Zy,A.aaC)
+x(A.aPC,B.b2)
+x(A.aUP,B.aU)
+y(A.aaC,B.b0)})()
+B.b8(b.typeUniverse,JSON.parse('{"Zy":{"a_":[]}}'))};
+(a=>{a["0oqonIVdkRt76UuNFfjwf31BBfs="]=a.current})($__dart_deferred_initializers__);