feat(miniprogram): 血压录入跳焦 + 历史参考值 (U2-2)

- 收缩压 onConfirm 自动聚焦到舒张压输入框
- 显示上次血压测量值作为参考
- 新增 .input-field-ref 样式

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

@@ -149,6 +149,12 @@
   margin-bottom: var(--tk-gap-xs);
 }
 
+.input-field-ref {
+  color: var(--tk-text-secondary);
+  font-size: var(--tk-font-cap);
+  margin-left: 8px;
+}
+
 .input-bp-divider {
   display: flex;
   flex-direction: column;

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

@@ -67,6 +67,8 @@ export default function HealthInput() {
   const [submitting, setSubmitting] = useState(false);
   const { safeSetTimeout } = useSafeTimeout();
   const [loadingThresholds, setLoadingThresholds] = useState(true);
+  const [focusedField, setFocusedField] = useState<string | null>(null);
+  const [lastBp, setLastBp] = useState<{ systolic: number; diastolic: number } | null>(null);
   const currentPatient = useAuthStore((s) => s.currentPatient);
   const clearCache = useHealthStore((s) => s.clearCache);
 
@@ -102,7 +104,24 @@ export default function HealthInput() {
     } catch {
       // 解析失败则忽略，不影响正常使用
     }
-  }, []);
+
+    // 加载上次血压参考值
+    try {
+      const pid = currentPatient?.id;
+      if (pid) {
+        const res = await import('../../../services/request').then((m) => m.api);
+        const data = await res.get<{ data: Array<{ morning_bp_systolic?: number; morning_bp_diastolic?: number }> }>(
+          `/health/patients/${pid}/daily-monitoring`,
+          { page: 1, page_size: 1 },
+        );
+        const items = Array.isArray(data) ? data : (data as Record<string, unknown>)?.data;
+        const latest = Array.isArray(items) ? items[0] : null;
+        if (latest?.morning_bp_systolic && latest?.morning_bp_diastolic) {
+          setLastBp({ systolic: latest.morning_bp_systolic, diastolic: latest.morning_bp_diastolic });
+        }
+      }
+    } catch { /* 不影响主流程 */ }
+  }, [currentPatient?.id]);
 
   usePageData(loadThresholdsAndSync, { throttleMs: 10000 });
 
@@ -226,13 +245,18 @@ export default function HealthInput() {
           <Text className='input-section-title'>血压数值</Text>
           <View className='input-bp-group'>
             <View className='input-bp-field'>
-              <Text className='input-field-label'>收缩压</Text>
+              <Text className='input-field-label'>
+                收缩压
+                {lastBp && <Text className='input-field-ref'>上次 {lastBp.systolic}</Text>}
+              </Text>
               <Input
                 type='digit'
                 className='input-field-box'
                 placeholder='如 120'
                 value={systolic}
+                focus={focusedField === 'systolic'}
                 onInput={(e) => setSystolic(e.detail.value)}
+                onConfirm={() => setFocusedField('diastolic')}
               />
             </View>
             <View className='input-bp-divider'>
@@ -241,13 +265,18 @@ export default function HealthInput() {
               <View className='input-bp-line' />
             </View>
             <View className='input-bp-field'>
-              <Text className='input-field-label'>舒张压</Text>
+              <Text className='input-field-label'>
+                舒张压
+                {lastBp && <Text className='input-field-ref'>上次 {lastBp.diastolic}</Text>}
+              </Text>
               <Input
                 type='digit'
                 className='input-field-box'
                 placeholder='如 80'
                 value={diastolic}
+                focus={focusedField === 'diastolic'}
                 onInput={(e) => setDiastolic(e.detail.value)}
+                onConfirm={() => setFocusedField(null)}
               />
             </View>
           </View>