fix(mp): T40 UI 设计系统合规审计修复 — 60 页面全覆盖

- 新增 $white 语义变量 + --tk-font-display Token
- 44 处 #fff → $white，2 处 background: #fff → $card
- 14 处 border-radius 硬编码统一为 $r-xs/$r-lg/$r
- 3 处 TSX inline 颜色提取为 SCSS 类（exchange/orders/action-inbox）
- ErrorBoundary 重构：6 个 inline style → SCSS 类 + Design Token
- 2 处离调色板颜色修正（#0284C7→$tx2, #94A3B8→$tx3）
- 2 处静默 catch 块添加状态清理（article/health）
- 趋势页补 Loading/EmptyState；咨询页 GuestGuard 统一
- 4 处 #FFFFFF → $white（mixins/index/exchange/variables）

apps/miniprogram/src/pages/messages/index.scss

@@ -63,7 +63,7 @@
   right: 12px;
   min-width: 16px;
   height: 16px;
-  border-radius: 8px;
+  border-radius: $r-xs;
   background: $dan;
   @include flex-center;
   padding: 0 4px;
@@ -71,7 +71,7 @@
 
 .msg-segment-badge-text {
   font-size: var(--tk-font-micro);
-  color: #fff;
+  color: $white;
   font-weight: 600;
 }
 
@@ -121,7 +121,7 @@
 .consult-avatar {
   width: 44px;
   height: 44px;
-  border-radius: 22px;
+  border-radius: $r-pill;
   background: $surface-alt;
   @include flex-center;
   flex-shrink: 0;
@@ -183,7 +183,7 @@
 .consult-badge {
   min-width: 18px;
   height: 18px;
-  border-radius: 9px;
+  border-radius: $r-pill;
   background: $dan;
   @include flex-center;
   padding: 0 4px;
@@ -192,7 +192,7 @@
 
 .consult-badge-text {
   font-size: var(--tk-font-micro);
-  color: #fff;
+  color: $white;
   font-weight: 600;
 }
 
@@ -225,6 +225,23 @@
   font-weight: 700;
 }
 
+.notify-type-appointment,
+.notify-type-points {
+  background: $pri-l;
+  color: $pri;
+}
+
+.notify-type-alert {
+  background: $wrn-l;
+  color: $wrn;
+}
+
+.notify-type-followup,
+.notify-type-report {
+  background: $acc-l;
+  color: $acc;
+}
+
 .notify-body {
   flex: 1;
   min-width: 0;
@@ -263,7 +280,7 @@
 .notify-dot {
   width: 8px;
   height: 8px;
-  border-radius: 4px;
+  border-radius: $r-xs;
   background: $pri;
   flex-shrink: 0;
   margin-top: 6px;