fix(mp): T40 UI 审查全量修复 + 设计体系一致性优化

Phase 0 基础设施:
- statusTag.ts: getStatusInlineStyle() 移除内联 borderRadius/padding/fontSize，仅返回 {background, color}
- 新增 SEVERITY_COLORS + getSeverityStyle() + getSeverityLabel() 统一告警严重程度样式
- variables.scss: 新增 9 个语义颜色别名 ($success/$danger/$warning/$info 等)
- mixins.scss: 新增 status-inline mixin 统一状态标签样式
- 7 个消费者页面添加 @include status-inline CSS 补偿

Phase 1 HIGH 修复 (4 页面):
- P46 随访管理: 移除 getTypeStyle() 硬编码 fontSize，替换文字 Loading 为组件
- P45 咨询详情医护: 添加 Loading/ErrorState 三态模板 + error ref
- P02 健康数据: 添加 loading ref + Loading 组件 + 错误 toast 提示
- P48 告警中心: 替换本地 SEVERITY_COLORS/SEVERITY_LABELS 为 statusTag.ts 导出

Phase 2 全局一致性:
- 2.1 触控补全: 17 页面为可点击元素添加 min-height: $touch-min
- 2.2 字号替换: 19 文件 31 处硬编码 px → Design Token CSS 变量
- 2.3 颜色替换: 18 文件 ~50 处硬编码十六进制 → SCSS 语义变量
- 2.4 elder-mode.scss: 新增 9 个选择器到触控放大清单

Phase 3 LOW 修复:
- 3.1 统一 Loading: 21 页面旧式文字加载 → <Loading> 组件
- 3.2 useElderClass: 8 页面补全长者模式 class 绑定
- 3.3 零散修复: 按钮 44px→48px，诊断记录添加 scroll-view 无限加载

同时新增 UniApp (Vue 3 + Vite) 小程序完整代码库 (146 文件)

apps/miniprogram-uniapp/src/pages-sub/pkg-profile/settings/index.vue

@@ -0,0 +1,173 @@
+<template>
+  <scroll-view scroll-y class="page-scroll">
+    <view :class="['settings-page', elderClass]">
+      <text class="page-title">设置</text>
+
+      <view class="settings-group">
+        <view class="settings-item" @tap="handleClearCache">
+          <view class="settings-icon">
+            <text class="settings-icon-text">缓</text>
+          </view>
+          <text class="settings-label">清除缓存</text>
+          <text class="settings-arrow">></text>
+        </view>
+        <view class="settings-item" @tap="handleAbout">
+          <view class="settings-icon">
+            <text class="settings-icon-text">关</text>
+          </view>
+          <text class="settings-label">关于我们</text>
+          <text class="settings-arrow">></text>
+        </view>
+        <view class="settings-item" @tap="handlePrivacy">
+          <view class="settings-icon">
+            <text class="settings-icon-text">隐</text>
+          </view>
+          <text class="settings-label">隐私政策</text>
+          <text class="settings-arrow">></text>
+        </view>
+      </view>
+
+      <view class="settings-group">
+        <view class="settings-item logout-item" @tap="handleLogout">
+          <text class="settings-label logout-label">退出登录</text>
+        </view>
+      </view>
+    </view>
+  </scroll-view>
+</template>
+
+<script setup lang="ts">
+import { useAuthStore } from '@/stores/auth'
+import { clearRequestCache } from '@/services/request'
+import { useElderClass } from '@/composables/useElderClass'
+
+const authStore = useAuthStore()
+const { elderClass } = useElderClass()
+
+function handleClearCache() {
+  uni.showModal({
+    title: '清除缓存',
+    content: '确定要清除本地缓存数据吗？不会影响账号信息。',
+    success: (res: any) => {
+      if (res.confirm) {
+        const preservedKeys = [
+          'access_token', 'refresh_token', 'user_data', 'user_roles',
+          'tenant_id', 'wechat_openid', 'current_patient', 'current_patient_id',
+        ]
+        const preservedData: Record<string, unknown> = {}
+        for (const key of preservedKeys) {
+          const val = uni.getStorageSync(key)
+          if (val) preservedData[key] = val
+        }
+
+        try { uni.clearStorageSync() } catch { /* ignore */ }
+
+        for (const [key, val] of Object.entries(preservedData)) {
+          uni.setStorageSync(key, val)
+        }
+
+        clearRequestCache()
+        uni.showToast({ title: '缓存已清除', icon: 'success' })
+      }
+    },
+  })
+}
+
+function handleAbout() {
+  uni.showModal({
+    title: '关于我们',
+    content: 'HMS 健康管理平台 v1.0.0\n为您的健康保驾护航',
+    showCancel: false,
+  })
+}
+
+function handlePrivacy() {
+  uni.navigateTo({ url: '/pages/legal/privacy-policy' })
+}
+
+function handleLogout() {
+  uni.showModal({
+    title: '退出登录',
+    content: '确定要退出登录吗？',
+    success: (res: any) => {
+      if (res.confirm) {
+        authStore.logout()
+      }
+    },
+  })
+}
+</script>
+
+<style lang="scss" scoped>
+.page-scroll {
+  height: 100vh;
+  background: $bg;
+}
+
+.settings-page {
+  padding: 32px 24px;
+}
+
+.page-title {
+  @include section-title;
+  padding-left: 4px;
+}
+
+.settings-group {
+  background: $card;
+  border-radius: $r;
+  overflow: hidden;
+  margin-bottom: 24px;
+  box-shadow: $shadow-sm;
+}
+
+.settings-item {
+  display: flex;
+  align-items: center;
+  padding: 28px 24px;
+  border-bottom: 1px solid $bd-l;
+
+  &:last-child {
+    border-bottom: none;
+  }
+
+  &.logout-item {
+    justify-content: center;
+  }
+}
+
+.settings-icon {
+  @include flex-center;
+  width: 48px;
+  height: 48px;
+  border-radius: $r-sm;
+  background: $pri-l;
+  margin-right: 16px;
+  flex-shrink: 0;
+}
+
+.settings-icon-text {
+  font-family: 'Georgia', 'Times New Roman', serif;
+  font-size: var(--tk-font-h2);
+  font-weight: bold;
+  color: $pri-d;
+}
+
+.settings-label {
+  flex: 1;
+  font-size: var(--tk-font-num);
+  color: $tx;
+}
+
+.logout-label {
+  color: $dan;
+  font-weight: bold;
+}
+
+.settings-arrow {
+  font-size: var(--tk-font-h2);
+  color: $tx3;
+  font-family: 'Georgia', 'Times New Roman', serif;
+  flex-shrink: 0;
+}
+</style>