refactor(mp): 试点迁移患者列表页 — 使用统一组件库

替换手写 UI 为：
- PageShell 替代手动 min-height/bg/padding
- SearchSection 替代手写搜索栏 + 标签筛选
- ContentCard 替代手写卡片样式（背景/圆角/阴影/触摸反馈）
- StatusTag 替代 @include tag() mixin
- LoadingCard 替代初始加载的 Loading 组件

SCSS 从 151 行精简到 65 行，保留页面特有业务样式。
数据加载逻辑（无限滚动 + usePageData）保持不变。

apps/miniprogram/src/pages/pkg-doctor-core/patients/index.scss

@@ -1,47 +1,9 @@
 @import '../../../styles/variables.scss';
-@import '../../../styles/mixins.scss';
 
-.patient-list-page {
-  min-height: 100vh;
-  background: $bg;
-  padding: 24px;
-  padding-bottom: 120px;
-}
-
-.search-bar {
-  margin-bottom: 20px;
-
-  .search-input {
-    background: $card;
-    border-radius: $r;
-    padding: 20px 24px;
-    font-size: var(--tk-font-body-lg);
-    width: 100%;
-    box-sizing: border-box;
-    box-shadow: $shadow-sm;
-  }
-}
-
-.tag-filter {
-  white-space: nowrap;
-  margin-bottom: 20px;
-  width: 100%;
-}
-
-.tag-chip {
-  display: inline-block;
-  padding: 10px 24px;
-  border-radius: $r-pill;
-  background: $bd-l;
-  font-size: var(--tk-font-h2);
-  color: $tx2;
-  margin-right: 16px;
-
-  &.active {
-    background: $pri;
-    color: $card;
-  }
-}
+// PageShell 已接管：min-height, background, padding
+// SearchSection 已接管：search-bar
+// ContentCard 已接管：patient-card 背景/圆角/阴影/触摸反馈
+// StatusTag 已接管：patient-card__status 标签样式
 
 .patient-count {
   margin-bottom: 16px;
@@ -55,90 +17,44 @@
 .patient-cards {
   display: flex;
   flex-direction: column;
+  gap: var(--tk-gap-md);
+}
+
+.patient-card__header {
+  display: flex;
+  align-items: center;
   gap: 16px;
 }
 
-.patient-card {
-  background: $card;
-  border-radius: $r-lg;
-  padding: 28px;
-  box-shadow: $shadow-sm;
+.patient-card__name {
+  font-size: var(--tk-font-num);
+  font-weight: 600;
+  color: $tx;
+}
 
-  &:active {
-    background: $bd-l;
-  }
+.patient-card__meta {
+  font-size: var(--tk-font-h2);
+  color: $tx2;
+  flex: 1;
+}
 
-  &__header {
-    display: flex;
-    align-items: center;
-    margin-bottom: 12px;
-  }
-
-  &__name {
-    font-size: var(--tk-font-num);
-    font-weight: 600;
-    color: $tx;
-    margin-right: 16px;
-  }
-
-  &__meta {
-    font-size: var(--tk-font-h2);
-    color: $tx2;
-  }
-
-  &__tags {
-    display: flex;
-    flex-wrap: wrap;
-    gap: 8px;
-    margin-bottom: 8px;
-  }
-
-  &__status {
-    @include tag($bg, $tx2);
-
-    &--active {
-      @include tag($acc-l, $acc);
-    }
-
-    &--inactive {
-      @include tag($bd-l, $tx3);
-    }
-  }
+.patient-card__tags {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  margin-top: 12px;
 }
 
 .patient-tag {
   padding: 4px 14px;
   border-radius: $r;
-  background: $pri-l;
+  background: rgba($pri, 0.1);
 
   &__text {
     font-size: var(--tk-font-body);
   }
 }
 
-.pagination {
-  display: flex;
-  justify-content: center;
-  align-items: center;
-  gap: 24px;
-  margin-top: 32px;
-
-  &__btn {
-    font-size: var(--tk-font-h1);
-    color: $pri;
-    padding: 12px 24px;
-
-    &.disabled {
-      color: $tx3;
-    }
-  }
-
-  &__info {
-    font-size: var(--tk-font-h2);
-    color: $tx2;
-  }
-}
-
 .load-more-hint-wrap {
   text-align: center;
   padding: 20px;

apps/miniprogram/src/pages/pkg-doctor-core/patients/index.tsx

@@ -1,10 +1,15 @@
 import { useState, useEffect, useCallback, useRef } from 'react';
-import { View, Text, Input, ScrollView } from '@tarojs/components';
+import { View, Text } from '@tarojs/components';
 import Taro, { useReachBottom } from '@tarojs/taro';
 import { usePageData } from '@/hooks/usePageData';
 import { listPatients, listPatientTags, type PatientItem, type PatientTag } from '@/services/doctor/patient';
-import Loading from '@/components/Loading';
+import PageShell from '@/components/ui/PageShell';
+import ContentCard from '@/components/ui/ContentCard';
+import StatusTag from '@/components/ui/StatusTag';
+import LoadingCard from '@/components/ui/LoadingCard';
+import SearchSection from '@/components/patterns/SearchSection';
 import EmptyState from '@/components/EmptyState';
+import Loading from '@/components/Loading';
 import { useElderClass } from '../../../hooks/useElderClass';
 import './index.scss';
 
@@ -19,9 +24,7 @@ export default function PatientList() {
   const [page, setPage] = useState(1);
   const mountedRef = useRef(false);
 
-  useEffect(() => {
-    loadTags();
-  }, []);
+  useEffect(() => { loadTags(); }, []);
 
   const loadTags = async () => {
     try {
@@ -40,11 +43,7 @@ export default function PatientList() {
         tag_id: activeTag || undefined,
       });
       const list = res.data || [];
-      if (isRefresh) {
-        setPatients(list);
-      } else {
-        setPatients((prev) => [...prev, ...list]);
-      }
+      setPatients(prev => isRefresh ? list : [...prev, ...list]);
       setTotal(res.total || 0);
       setPage(pageNum);
     } catch {
@@ -59,24 +58,15 @@ export default function PatientList() {
     { enablePullDown: true },
   );
 
-  // tag 变化时重新加载（跳过首次 mount，由 usePageData 的 useDidShow 处理）
   useEffect(() => {
-    if (mountedRef.current) {
-      loadPatients(1, true);
-    }
+    if (mountedRef.current) { loadPatients(1, true); }
     mountedRef.current = true;
   }, [activeTag, loadPatients]);
 
   useReachBottom(() => {
-    if (!loading && patients.length < total) {
-      loadPatients(page + 1);
-    }
+    if (!loading && patients.length < total) { loadPatients(page + 1); }
   });
 
-  const handleSearch = () => {
-    loadPatients(1, true);
-  };
-
   const handleTagFilter = (tagId: string) => {
     setActiveTag(tagId === activeTag ? '' : tagId);
   };
@@ -98,91 +88,69 @@ export default function PatientList() {
     return `${age}岁`;
   };
 
-  if (loading && patients.length === 0) return <Loading />;
+  const filters = [
+    { key: '', label: '全部' },
+    ...tags.map(t => ({ key: t.id, label: t.name })),
+  ];
+
+  if (loading && patients.length === 0) return <LoadingCard count={3} />;
 
   return (
-    <ScrollView scrollY className={`patient-list-page ${modeClass}`}>
-      <View className='search-bar'>
-        <Input
-          className='search-input'
-          placeholder='搜索患者姓名/手机号'
-          value={search}
-          onInput={(e) => setSearch(e.detail.value)}
-          confirmType='search'
-          onConfirm={handleSearch}
-        />
-      </View>
+    <PageShell safeBottom className={modeClass}>
+      <SearchSection
+        value={search}
+        onChange={setSearch}
+        onSearch={() => loadPatients(1, true)}
+        placeholder="搜索患者姓名/手机号"
+        filters={filters}
+        activeFilter={activeTag}
+        onFilterChange={handleTagFilter}
+      />
 
-      {tags.length > 0 && (
-        <ScrollView scrollX className='tag-filter'>
-          <View
-            className={`tag-chip ${!activeTag ? 'active' : ''}`}
-            onClick={() => handleTagFilter('')}
-          >
-            <Text>全部</Text>
-          </View>
-          {tags.map((tag) => (
-            <View
-              key={tag.id}
-              className={`tag-chip ${activeTag === tag.id ? 'active' : ''}`}
-              style={activeTag === tag.id && tag.color ? `background: ${tag.color}; color: white` : ''}
-              onClick={() => handleTagFilter(tag.id)}
-            >
-              <Text>{tag.name}</Text>
-            </View>
-          ))}
-        </ScrollView>
-      )}
-
-      <View className='patient-count'>
+      <View className="patient-count">
         <Text>共 {total} 位患者</Text>
       </View>
 
       {patients.length === 0 ? (
-        <EmptyState text='暂无患者数据' />
+        <EmptyState text="暂无患者数据" />
       ) : (
-        <View className='patient-cards'>
+        <View className="patient-cards">
           {patients.map((p) => (
-            <View
+            <ContentCard
               key={p.id}
-              className='patient-card'
-              onClick={() => Taro.navigateTo({ url: `/pages/pkg-doctor-core/patients/detail/index?id=${p.id}` })}
+              onPress={() => Taro.navigateTo({ url: `/pages/pkg-doctor-core/patients/detail/index?id=${p.id}` })}
             >
-              <View className='patient-card__header'>
-                <Text className='patient-card__name'>{p.name}</Text>
-                <Text className='patient-card__meta'>
+              <View className="patient-card__header">
+                <Text className="patient-card__name">{p.name}</Text>
+                <Text className="patient-card__meta">
                   {getGenderLabel(p.gender)} {calcAge(p.birth_date)}
                 </Text>
+                {p.status && <StatusTag status={p.status} size="sm" />}
               </View>
               {p.tags && p.tags.length > 0 && (
-                <View className='patient-card__tags'>
+                <View className="patient-card__tags">
                   {p.tags.map((t) => (
                     <View
                       key={t.id}
-                      className='patient-tag'
+                      className="patient-tag"
                       style={t.color ? `background: ${t.color}20; color: ${t.color}` : ''}
                     >
-                      <Text className='patient-tag__text'>{t.name}</Text>
+                      <Text className="patient-tag__text">{t.name}</Text>
                     </View>
                   ))}
                 </View>
               )}
-              {p.status && (
-                <Text className={`patient-card__status patient-card__status--${p.status}`}>
-                  {p.status === 'active' ? '活跃' : p.status === 'inactive' ? '非活跃' : p.status}
-                </Text>
-              )}
-            </View>
+            </ContentCard>
           ))}
         </View>
       )}
 
       {!loading && patients.length >= total && total > 0 && (
-        <View className='load-more-hint-wrap'>
-          <Text className='load-more-hint'>没有更多了</Text>
+        <View className="load-more-hint-wrap">
+          <Text className="load-more-hint">没有更多了</Text>
         </View>
       )}
       {loading && patients.length > 0 && <Loading />}
-    </ScrollView>
+    </PageShell>
   );
 }