feat(theme): 实现主题切换系统并优化经销商相关页面

- 新增主题切换系统，支持智能主题和手动选择
- 更新经销商首页、团队、订单、提现等页面样式
- 添加主题相关的Hook和样式工具函数
- 优化部分组件样式以适配新主题

src/pages/cart/cart.tsx

@@ -10,7 +10,7 @@ import {
   Divider,
   ConfigProvider
 } from '@nutui/nutui-react-taro';
-import {ArrowLeft, Del, Shopping} from '@nutui/icons-react-taro';
+import {ArrowLeft, Del} from '@nutui/icons-react-taro';
 import {View} from '@tarojs/components';
 import {CartItem, useCart} from "@/hooks/useCart";
 import './cart.scss';
@@ -48,11 +48,11 @@ function Cart() {
   useShareAppMessage(() => {
     return {
       title: '购物车 - 网宿小店',
-      success: function (res) {
-        console.log('分享成功', res);
+      success: function () {
+        console.log('分享成功');
       },
-      fail: function (res) {
-        console.log('分享失败', res);
+      fail: function () {
+        console.log('分享失败');
       }
     };
   });
@@ -203,15 +203,25 @@ function Cart() {
         >
           <span className="text-lg">购物车({cartCount})</span>
         </NavBar>
-        <Empty
-          description="购物车空空如也"
-          actions={[{ text: '去逛逛' }]}
+
+        {/* 垂直居中的空状态容器 */}
+        <View
+          className="flex items-center justify-center"
           style={{
-            marginTop: `${statusBarHeight + 50}px`,
+            height: `calc(100vh - ${statusBarHeight + 150}px)`,
+            paddingTop: `${statusBarHeight + 50}px`,
             backgroundColor: 'transparent'
           }}
-          onClick={() => Taro.switchTab({ url: '/pages/index/index' })}
-        />
+        >
+          <Empty
+            description="购物车空空如也"
+            actions={[{ text: '去逛逛' }]}
+            style={{
+              backgroundColor: 'transparent'
+            }}
+            onClick={() => Taro.switchTab({ url: '/pages/index/index' })}
+          />
+        </View>
       </>
     )
   }
@@ -251,33 +261,8 @@ function Cart() {
       </NavBar>
 
       {/* 购物车内容 */}
-      <View
-        className="pt-24"
-        style={{ backgroundColor: cartItems.length === 0 ? 'transparent' : undefined }}
-      >
-        {cartItems.length === 0 ? (
-          // 空购物车
-          <View
-            className="cart-empty-container flex flex-col items-center justify-center h-96"
-            style={{ backgroundColor: 'transparent' }}
-          >
-            <Empty
-              image={<Shopping size={80}/>}
-              description="购物车空空如也"
-              style={{ backgroundColor: 'transparent' }}
-            >
-              <Button
-                type="primary"
-                size="small"
-                onClick={() => Taro.switchTab({url: '/pages/index/index'})}
-              >
-                去逛逛
-              </Button>
-            </Empty>
-          </View>
-        ) : (
-          <>
-            {/* 商品列表 */}
+      <View className="pt-24">
+        {/* 商品列表 */}
             <View className="bg-white">
               {cartItems.map((item: CartItem, index: number) => (
                 <View key={item.goodsId}>
@@ -361,10 +346,8 @@ function Cart() {
               </View>
             </View>
 
-            {/* 底部安全区域占位 */}
-            <View className="h-20"></View>
-          </>
-        )}
+        {/* 底部安全区域占位 */}
+        <View className="h-20"></View>
       </View>
     </>
   );

src/pages/user/components/IsDealer.tsx

@@ -27,12 +27,13 @@ const UserCell = () => {
               backgroundImage: 'linear-gradient(to right bottom, #e53e3e, #c53030)',
             }}
             title={
-              <View style={{display: 'inline-flex', alignItems: 'center'}} onClick={() => navTo('/admin/index', true)}>
+              <View style={{display: 'inline-flex', alignItems: 'center'}}>
                 <Setting className={'text-white '} size={16}/>
                 <Text style={{fontSize: '16px'}} className={'pl-3 text-white font-medium'}>管理中心</Text>
               </View>
             }
             extra={<ArrowRight color="#ffffff" size={18}/>}
+            onClick={() => navTo('/admin/index', true)}
           />
         </View>
       </>
@@ -52,7 +53,7 @@ const UserCell = () => {
               backgroundImage: 'linear-gradient(to right bottom, #54a799, #177b73)',
             }}
             title={
-              <View style={{display: 'inline-flex', alignItems: 'center'}} onClick={() => navTo('/dealer/index', true)}>
+              <View style={{display: 'inline-flex', alignItems: 'center'}}>
                 <Reward className={'text-orange-100 '} size={16}/>
                 <Text style={{fontSize: '16px'}}
                       className={'pl-3 text-orange-100 font-medium'}>分销中心</Text>
@@ -60,6 +61,7 @@ const UserCell = () => {
               </View>
             }
             extra={<ArrowRight color="#cccccc" size={18}/>}
+            onClick={() => navTo('/dealer/index', true)}
           />
         </View>
       </>

src/pages/user/components/UserCell.tsx

@@ -122,6 +122,13 @@ const UserCell = () => {
             extra={<ArrowRight color="#cccccc" size={18}/>}
             onClick={() => navTo('/user/profile/profile', true)}
           />
+          <Cell
+            className="nutui-cell-clickable"
+            title="切换主题"
+            align="center"
+            extra={<ArrowRight color="#cccccc" size={18}/>}
+            onClick={() => navTo('/user/theme/index', true)}
+          />
           <Cell
             className="nutui-cell-clickable"
             title="退出登录"