fix: 全面修复 - 实时通讯、报告AI流程、健康概览、用药运动提醒

- SignalR Hub消息持久化+防重复+跨端广播
- 报告VLM+LLM真实AI流程(验证→提取→解读)
- 医生审核页重构(严重程度/建议模板/综合评语)
- 健康概览五合一趋势图(fl_chart+指标切换)
- 用药提醒时区修复+跨午夜+过期提醒
- 运动打卡DayOfWeek映射修复+计划覆盖查询
- 体重与其他四指标同级(Abnormal检查/确认卡牌)
- AI Agent支持多种类多时段批量录入
- 删除硬编码假数据(张三/假医生/假AI解读)
- 随访/报告审核数据链路全部打通

backend/src/Health.WebApi/Endpoints/ai_chat_endpoints.cs

@@ -402,27 +402,39 @@ public static class AiChatEndpoints
 
     private static void _UpdateMessageTypeAndMetadata(string toolName, object toolResult, ref string messageType, ref Dictionary<string, object> metadata)
     {
+        // 将匿名对象统一转成 Dictionary（toolResult 可能是匿名类型，不是 IDictionary）
+        var resultDict = toolResult as IDictionary<string, object>;
+        if (resultDict == null)
+        {
+            try
+            {
+                var json = JsonSerializer.Serialize(toolResult, JsonOpts);
+                resultDict = JsonSerializer.Deserialize<Dictionary<string, object>>(json, JsonOpts);
+            }
+            catch { resultDict = new Dictionary<string, object>(); }
+        }
+
         switch (toolName)
         {
             case "record_health_data":
                 messageType = "data_confirm";
-                if (toolResult is IDictionary<string, object> resultDict)
+                if (resultDict != null)
                 {
                     if (resultDict.TryGetValue("type", out var type)) metadata["type"] = type.ToString();
                     if (resultDict.TryGetValue("value", out var val)) metadata["value"] = val.ToString();
                     if (resultDict.TryGetValue("unit", out var unit)) metadata["unit"] = unit.ToString();
-                    if (resultDict.TryGetValue("isAbnormal", out var abn) && abn is bool b2) metadata["abnormal"] = b2;
-                    if (resultDict.TryGetValue("success", out var success) && success is bool b && b)
-                        metadata["success"] = true;
+                    if (resultDict.TryGetValue("isAbnormal", out var abn)) metadata["abnormal"] = abn is bool b2 ? b2 : false;
+                    if (resultDict.TryGetValue("success", out var success)) metadata["success"] = success is bool b && b;
+                    metadata["recordTime"] = DateTime.UtcNow.AddHours(8).ToString("MM月dd日 HH:mm");
                 }
                 break;
             case "manage_medication":
                 messageType = "medication_confirm";
-                if (toolResult is IDictionary<string, object> medDict)
+                if (resultDict != null)
                 {
-                    if (medDict.TryGetValue("name", out var name))
+                    if (resultDict.TryGetValue("name", out var name))
                         metadata["name"] = name.ToString();
-                    if (medDict.TryGetValue("dosage", out var dosage))
+                    if (resultDict.TryGetValue("dosage", out var dosage))
                         metadata["dosage"] = dosage.ToString();
                 }
                 break;