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_100.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={
 b60(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.a_s(v,u)
+u=new A.a_r(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="Chagua yote"
 break A}if("keyboardToolbar.done"===e){y="Imekamilika"
 break A}y=null
 break A}return y},
-boP(d){return new A.aTQ(d)},
-a_s:function a_s(d,e){var _=this
+boP(d){return new A.aTR(d)},
+a_r:function a_r(d,e){var _=this
 _.r=d
 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aQu:function aQu(){},
-aTQ:function aTQ(d){this.a=d},
-abw:function abw(){}}
+aQv:function aQv(){},
+aTR:function aTR(d){this.a=d},
+abv:function abv(){}}
 B=c[0]
 A=a.updateHolder(c[71],A)
-A.a_s.prototype={
+A.a_r.prototype={
 h(d,e){var y=this.r.a4(e)
 return y==null?this.a.a4(e):y},
 gb8(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aQu()}return x},
+x=y.z=new A.aQv()}return x},
 gbc(){return this.r}}
-A.aQu.prototype={
+A.aQv.prototype={
 gbi(){return"Kata"},
 gbh(){return"Nakili"},
 gbj(){return"Bandika"},
 gbf(){return"Chagua yote"}}
-A.abw.prototype={}
+A.abv.prototype={}
 var z=a.updateTypes([])
-A.aTQ.prototype={
+A.aTR.prototype={
 $1(d){return A.bnv(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.abw,B.a_)
-x(A.a_s,A.abw)
-x(A.aQu,B.b2)
-x(A.aTQ,B.aU)
-y(A.abw,B.b0)})()
-B.b8(b.typeUniverse,JSON.parse('{"a_s":{"a_":[]}}'))};
-(a=>{a["2vZ8zPuP2R4ATKXwYjbMF0xmAmM="]=a.current})($__dart_deferred_initializers__);
+x(A.abv,B.a_)
+x(A.a_r,A.abv)
+x(A.aQv,B.b2)
+x(A.aTR,B.aU)
+y(A.abv,B.b0)})()
+B.b8(b.typeUniverse,JSON.parse('{"a_r":{"a_":[]}}'))};
+(a=>{a["iYd3yqd2PNH6x3MdTkuIrqgCplM="]=a.current})($__dart_deferred_initializers__);