feat(health+ai): P2 咨询联动 + AI 巡检消费 — 全链路打通

业务链路打通 5/5 断点全部完成：
- 咨询→随访：医生端新增"创建随访"按钮，从咨询会话直接创建随访任务
- 咨询→AI：医生端新增"AI 分析"按钮，对咨询上下文触发 AI 分析
- 告警→咨询：小程序告警详情页新增"在线咨询"快捷入口
- AI 巡检消费：erp-ai 新增 patrol_consumer，订阅 ai.patrol.requested 事件
- 前端联动：Web ConsultationDetail + 小程序 alerts 页面联动实现

后端：2 新 API + 2 handler + 1 service + AI event consumer
前端：Web 2 API + 1 页面改造 + 小程序 2 页面改造
测试：Web consultations.test.ts 9/9 通过

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

@@ -138,3 +138,24 @@
   color: $white;
   font-weight: 600;
 }
+
+/* ─── 告警上下文横幅 ─── */
+.consultation-alert-banner {
+  margin-bottom: var(--tk-gap-sm);
+}
+
+.consultation-alert-banner-inner {
+  display: flex;
+  align-items: center;
+  gap: var(--tk-gap-xs);
+}
+
+.consultation-alert-banner-icon {
+  font-size: var(--tk-font-body-lg);
+}
+
+.consultation-alert-banner-text {
+  font-size: var(--tk-font-body-sm);
+  color: var(--tk-text-secondary);
+  flex: 1;
+}

apps/miniprogram/src/pages/consultation/index.tsx

@@ -16,6 +16,24 @@ import GuestGuard from '@/components/GuestGuard';
 import { useElderClass } from '../../hooks/useElderClass';
 import './index.scss';
 
+/** 读取当前页面 URL 中的查询参数 */
+function getQueryParams(): Record<string, string> {
+  try {
+    const instance = Taro.getCurrentInstance();
+    const params = instance?.router?.params;
+    if (!params) return {};
+    const result: Record<string, string> = {};
+    for (const [key, value] of Object.entries(params)) {
+      if (typeof value === 'string') {
+        result[key] = value;
+      }
+    }
+    return result;
+  } catch {
+    return {};
+  }
+}
+
 function formatTime(iso: string): string {
   if (!iso) return '';
   const d = new Date(iso);
@@ -59,6 +77,9 @@ export default function Consultation() {
   const [page, setPage] = useState(1);
   const [total, setTotal] = useState(0);
 
+  // Alert context: when navigated from an alert page
+  const [alertContext, setAlertContext] = useState<{ alertId: string; alertTitle: string } | null>(null);
+
   const loadSessions = useCallback(async (pageNum: number, isRefresh = false) => {
     if (isRefresh) setLoading(true);
     setError('');
@@ -87,6 +108,14 @@ export default function Consultation() {
   usePageData(
     useCallback(async () => {
       Taro.setNavigationBarTitle({ title: '在线咨询' });
+      // Read alert context from URL query params
+      const params = getQueryParams();
+      if (params.context === 'alert' && params.alert_id) {
+        setAlertContext({
+          alertId: params.alert_id,
+          alertTitle: params.alert_title ? decodeURIComponent(params.alert_title) : '健康告警',
+        });
+      }
       if (!user) return;
       await loadSessions(1, true);
     }, [user, loadSessions]),
@@ -128,6 +157,18 @@ export default function Consultation() {
       {/* 副标题 */}
       <Text className='consultation-subtitle'>随时随地，连接专业医生</Text>
 
+      {/* Alert context banner */}
+      {alertContext && (
+        <ContentCard className='consultation-alert-banner'>
+          <View className='consultation-alert-banner-inner'>
+            <Text className='consultation-alert-banner-icon'>&#x26A0;</Text>
+            <Text className='consultation-alert-banner-text'>
+              来自告警: {alertContext.alertTitle}
+            </Text>
+          </View>
+        </ContentCard>
+      )}
+
       {/* 发起咨询按钮 */}
       <View
         className='consultation-create-btn'

apps/miniprogram/src/pages/pkg-health/alerts/index.scss

@@ -98,3 +98,31 @@
   color: $tx;
   line-height: 1.5;
 }
+
+.alert-message {
+  display: block;
+  font-size: var(--tk-font-body);
+  color: var(--tk-text-secondary);
+  line-height: 1.5;
+  margin-top: 8px;
+}
+
+.alert-actions {
+  display: flex;
+  justify-content: flex-end;
+  margin-top: 12px;
+  padding-top: 12px;
+  border-top: 1px solid $bd;
+}
+
+.alert-consult-btn {
+  padding: 8px 24px;
+  border-radius: $r-pill;
+  background: var(--tk-pri);
+}
+
+.alert-consult-btn-text {
+  font-size: var(--tk-font-body);
+  color: $card;
+  font-weight: 500;
+}

apps/miniprogram/src/pages/pkg-health/alerts/index.tsx

@@ -118,6 +118,19 @@ export default function PatientAlerts() {
                   </Text>
                 </View>
                 <Text className='alert-title'>{item.title}</Text>
+                {item.message && (
+                  <Text className='alert-message'>{item.message}</Text>
+                )}
+                <View className='alert-actions'>
+                  <View
+                    className='alert-consult-btn'
+                    onClick={() => safeNavigateTo(
+                      `/pages/consultation/index?context=alert&alert_id=${item.id}&alert_title=${encodeURIComponent(item.title)}`,
+                    )}
+                  >
+                    <Text className='alert-consult-btn-text'>在线咨询</Text>
+                  </View>
+                </View>
               </ContentCard>
             );
           })}