fix(widget): 优化访客在线续接与历史地区回填

server/cmd/main.go

@@ -13,6 +13,7 @@ import (
 	"kefu-cloud/server/internal/metrics"
 	"kefu-cloud/server/internal/middleware"
 	"kefu-cloud/server/internal/model"
+	"kefu-cloud/server/internal/service"
 	"kefu-cloud/server/internal/storage"
 	"kefu-cloud/server/internal/ws"
 )
@@ -29,6 +30,16 @@ func main() {
 	} else if geoip.Enabled() {
 		log.Printf("GeoIP 数据库已启用: %s", cfg.GeoIP.DBPath)
 		defer geoip.Close()
+		go func() {
+			updated, err := service.BackfillVisitorGeoIP(context.Background())
+			if err != nil {
+				log.Printf("警告: 历史访客地区回填失败: %v", err)
+				return
+			}
+			if updated > 0 {
+				log.Printf("历史访客地区回填完成: %d 条", updated)
+			}
+		}()
 	}
 
 	// 初始化 JWT（有效期可用 JWT_EXPIRE_HOURS 配置，默认 24 小时）