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_111.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={
 b6a(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.a_C(v,u)
+u=new A.a_B(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="Ch\u1ecdn t\u1ea5t c\u1ea3"
 break A}if("keyboardToolbar.done"===e){y="Xong"
 break A}y=null
 break A}return y},
-boX(d){return new A.aTY(d)},
-a_C:function a_C(d,e){var _=this
+boX(d){return new A.aTZ(d)},
+a_B:function a_B(d,e){var _=this
 _.r=d
 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aQE:function aQE(){},
-aTY:function aTY(d){this.a=d},
-abG:function abG(){}}
+aQF:function aQF(){},
+aTZ:function aTZ(d){this.a=d},
+abF:function abF(){}}
 B=c[0]
 A=a.updateHolder(c[81],A)
-A.a_C.prototype={
+A.a_B.prototype={
 h(d,e){var y=this.r.a4(e)
 return y==null?this.a.a4(e):y},
 gb8(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aQE()}return x},
+x=y.z=new A.aQF()}return x},
 gbc(){return this.r}}
-A.aQE.prototype={
+A.aQF.prototype={
 gbi(){return"C\u1eaft"},
 gbh(){return"Sao ch\xe9p"},
 gbj(){return"D\xe1n"},
 gbf(){return"Ch\u1ecdn t\u1ea5t c\u1ea3"}}
-A.abG.prototype={}
+A.abF.prototype={}
 var z=a.updateTypes([])
-A.aTY.prototype={
+A.aTZ.prototype={
 $1(d){return A.bnD(this.a,d)},
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-x(A.abG,B.a_)
-x(A.a_C,A.abG)
-x(A.aQE,B.b2)
-x(A.aTY,B.aU)
-y(A.abG,B.b0)})()
-B.b8(b.typeUniverse,JSON.parse('{"a_C":{"a_":[]}}'))};
-(a=>{a["CW90BMvKXvrMd4hbPe0iu46wCbE="]=a.current})($__dart_deferred_initializers__);
+x(A.abF,B.a_)
+x(A.a_B,A.abF)
+x(A.aQF,B.b2)
+x(A.aTZ,B.aU)
+y(A.abF,B.b0)})()
+B.b8(b.typeUniverse,JSON.parse('{"a_B":{"a_":[]}}'))};
+(a=>{a["d7jDP+rrA/g+K+cQ7Is1fcnFT0E="]=a.current})($__dart_deferred_initializers__);