feat: 交叉验证 AI vs LAMP（#15，一致确认/不一致升级会诊）

server-go/internal/handler/lamp.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"bytes"
+	"encoding/json"
 	"io"
 	"net/http"
 	"strconv"
@@ -26,6 +27,7 @@ func RegisterLampRoutes(rg *gin.RouterGroup, db *gorm.DB, s3 *service.S3Service,
 	rg.GET("/lamp-tests/:id/steps", read, listLampTestSteps(db))
 	rg.PATCH("/lamp-tests/:id/steps/:stepNo", write, updateLampTestStep(db))
 	rg.POST("/lamp-tests/:id/result-image", write, uploadLampResultImage(db, s3, imageBucket))
+	rg.GET("/lamp-tests/:id/cross-validation", read, getLampCrossValidation(db))
 }
 
 // listLampTests 检测任务单列表（roomId/batchId/status 过滤）
@@ -97,6 +99,8 @@ func updateLampTest(db *gorm.DB) gin.HandlerFunc {
 			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 			return
 		}
+		resultSet := false
+		resultValue := ""
 		if r, ok := updates["result"]; ok {
 			result, _ := r.(string)
 			if result != "" && !model.ValidLampResult(result) {
@@ -109,15 +113,86 @@ func updateLampTest(db *gorm.DB) gin.HandlerFunc {
 			} else {
 				updates["status"] = "testing"
 			}
+			resultSet = true
+			resultValue = result
 		}
 		if len(updates) > 0 {
 			db.Model(&model.LampTest{}).Where("id = ?", id).Updates(updates)
 		}
+		// 交叉验证：结果落库后与同房间最近巡检比对
+		if resultSet && resultValue != "" {
+			_ = runCrossValidation(db, id, resultValue)
+		}
 		db.Where("id = ?", id).First(&t)
 		c.JSON(http.StatusOK, t)
 	}
 }
 
+// runCrossValidation 用同房间最近的巡检记录做交叉验证，并回写 cross_status/cross_reason
+func runCrossValidation(db *gorm.DB, lampTestID, lampResult string) error {
+	var t model.LampTest
+	if err := db.Where("id = ?", lampTestID).First(&t).Error; err != nil {
+		return err
+	}
+	if t.RoomID == nil {
+		return nil
+	}
+	var inspection model.InspectionRecord
+	if err := db.Where("room_id = ?", *t.RoomID).Order("created_at DESC").First(&inspection).Error; err != nil {
+		return nil // 无关联巡检，保持 pending
+	}
+	var detections []service.AIDetection
+	if len(inspection.Detections) > 0 {
+		_ = json.Unmarshal(inspection.Detections, &detections)
+	}
+	aiClass := service.AIClassFromDetections(detections)
+	var diseases []string
+	if len(t.Diseases) > 0 {
+		_ = json.Unmarshal(t.Diseases, &diseases)
+	}
+	ok, reason := service.CrossValidate(aiClass, lampResult, diseases)
+	status := "inconsistent"
+	if ok {
+		status = "consistent"
+	}
+	return db.Model(&model.LampTest{}).Where("id = ?", lampTestID).
+		Updates(map[string]interface{}{"cross_status": status, "cross_reason": reason}).Error
+}
+
+// getLampCrossValidation 交叉验证详情（含关联巡检摘要）
+func getLampCrossValidation(db *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		id := c.Param("id")
+		var t model.LampTest
+		if db.Where("id = ?", id).First(&t).Error != nil {
+			c.JSON(http.StatusNotFound, gin.H{"error": "lamp test not found"})
+			return
+		}
+		var related map[string]interface{}
+		if t.RoomID != nil {
+			var inspection model.InspectionRecord
+			if db.Where("room_id = ?", *t.RoomID).Order("created_at DESC").First(&inspection).Error == nil {
+				var detections []service.AIDetection
+				if len(inspection.Detections) > 0 {
+					_ = json.Unmarshal(inspection.Detections, &detections)
+				}
+				related = map[string]interface{}{
+					"id":        inspection.ID,
+					"imageUrl":  inspection.ImageURL,
+					"aiClass":   service.AIClassFromDetections(detections),
+					"riskLevel": inspection.RiskLevel,
+					"createdAt": inspection.CreatedAt,
+				}
+			}
+		}
+		c.JSON(http.StatusOK, gin.H{
+			"crossStatus": t.CrossStatus,
+			"crossReason": t.CrossReason,
+			"relatedInspection": related,
+		})
+	}
+}
+
 // deleteLampTest 删除任务单（级联删除步骤）
 func deleteLampTest(db *gorm.DB) gin.HandlerFunc {
 	return func(c *gin.Context) {