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_70.part.js

@@ -1,7 +1,7 @@
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-u=new A.a__(v,u)
+u=new A.ZZ(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="\u0c8e\u0cb2\u0ccd\u0cb2\u0cb5\u0ca8\u0ccd\
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 break A}y=null
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-bpk(d){return new A.aUl(d)},
-a__:function a__(d,e){var _=this
+bpk(d){return new A.aUm(d)},
+ZZ:function ZZ(d,e){var _=this
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 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aQ1:function aQ1(){},
-aUl:function aUl(d){this.a=d},
-ab3:function ab3(){}}
+aQ2:function aQ2(){},
+aUm:function aUm(d){this.a=d},
+ab2:function ab2(){}}
 B=c[0]
 A=a.updateHolder(c[42],A)
-A.a__.prototype={
+A.ZZ.prototype={
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 return y==null?this.a.a4(e):y},
 gb8(){var y=this,x=y.z
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-x=y.z=new A.aQ1()}return x},
+x=y.z=new A.aQ2()}return x},
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-A.aQ1.prototype={
+A.aQ2.prototype={
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-A.ab3.prototype={}
+A.ab2.prototype={}
 var z=a.updateTypes([])
-A.aUl.prototype={
+A.aUm.prototype={
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-x(A.a__,A.ab3)
-x(A.aQ1,B.b2)
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-B.b8(b.typeUniverse,JSON.parse('{"a__":{"a_":[]}}'))};
-(a=>{a["H0SVb79Wk+H7SysHBZg5So1iDoY="]=a.current})($__dart_deferred_initializers__);
+x(A.ab2,B.a_)
+x(A.ZZ,A.ab2)
+x(A.aQ2,B.b2)
+x(A.aUm,B.aU)
+y(A.ab2,B.b0)})()
+B.b8(b.typeUniverse,JSON.parse('{"ZZ":{"a_":[]}}'))};
+(a=>{a["Sc+jWWNYyMFvIhJx9ERU2XpMg6Q="]=a.current})($__dart_deferred_initializers__);