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_94.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={
 b5V(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.a_m(v,u)
+u=new A.a_l(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="\u0dc3\u0dd2\u0dba\u0dbd\u0dca\u0dbd \u0dad
 break A}if("keyboardToolbar.done"===e){y="\u0dc3\u0dd2\u0daf\u0dd4 \u0dc0\u0dd2\u0dba"
 break A}y=null
 break A}return y},
-boV(d){return new A.aTW(d)},
-a_m:function a_m(d,e){var _=this
+boV(d){return new A.aTX(d)},
+a_l:function a_l(d,e){var _=this
 _.r=d
 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aQo:function aQo(){},
-aTW:function aTW(d){this.a=d},
-abq:function abq(){}}
+aQp:function aQp(){},
+aTX:function aTX(d){this.a=d},
+abp:function abp(){}}
 B=c[0]
 A=a.updateHolder(c[65],A)
-A.a_m.prototype={
+A.a_l.prototype={
 h(d,e){var y=this.r.a4(e)
 return y==null?this.a.a4(e):y},
 gb8(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aQo()}return x},
+x=y.z=new A.aQp()}return x},
 gbc(){return this.r}}
-A.aQo.prototype={
+A.aQp.prototype={
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 gbh(){return"\u0db4\u0dd2\u0da7\u0db4\u0dad\u0dca \u0d9a\u0dbb\u0db1\u0dca\u0db1"},
 gbj(){return"\u0d85\u0dbd\u0dc0\u0db1\u0dca\u0db1"},
 gbf(){return"\u0dc3\u0dd2\u0dba\u0dbd\u0dca\u0dbd \u0dad\u0ddd\u0dbb\u0db1\u0dca\u0db1"}}
-A.abq.prototype={}
+A.abp.prototype={}
 var z=a.updateTypes([])
-A.aTW.prototype={
+A.aTX.prototype={
 $1(d){return A.bnB(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.abq,B.a_)
-x(A.a_m,A.abq)
-x(A.aQo,B.b2)
-x(A.aTW,B.aU)
-y(A.abq,B.b0)})()
-B.b8(b.typeUniverse,JSON.parse('{"a_m":{"a_":[]}}'))};
-(a=>{a["iuXrWl7LNOd4oDTeUhNst5TgZyI="]=a.current})($__dart_deferred_initializers__);
+x(A.abp,B.a_)
+x(A.a_l,A.abp)
+x(A.aQp,B.b2)
+x(A.aTX,B.aU)
+y(A.abp,B.b0)})()
+B.b8(b.typeUniverse,JSON.parse('{"a_l":{"a_":[]}}'))};
+(a=>{a["D8B/+523dBsK7kQt+RJ2UhqXP6M="]=a.current})($__dart_deferred_initializers__);