feat: License 支持筛选多选批量删除

仅已吊销或已过期可删，有效授权自动跳过；单条删除同步限制。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/internal/controller/license/license_controller.go

@@ -135,7 +135,7 @@ func (ctrl *LicenseController) Update(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"code": 0, "message": "更新成功", "data": lic})
 }
 
-// Delete 删除 License // Logan.Li
+// Delete 删除 License（仅已吊销/已过期） // Logan.Li
 func (ctrl *LicenseController) Delete(c *gin.Context) {
 	id, _ := strconv.ParseUint(c.Param("id"), 10, 32)
 	lic, err := ctrl.svc.Delete(uint(id))
@@ -147,6 +147,32 @@ func (ctrl *LicenseController) Delete(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"code": 0, "message": "删除成功"})
 }
 
+// BatchDelete 批量删除：非吊销/未到期自动跳过 // Logan.Li
+func (ctrl *LicenseController) BatchDelete(c *gin.Context) {
+	var req dto.LicenseBatchDeleteRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "参数错误: 请提供 ids"})
+		return
+	}
+	result, err := ctrl.svc.BatchDelete(req.IDs)
+	if err != nil {
+		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
+		return
+	}
+	utils.LogAction(ctrl.db, c, "batch_delete", "license", 0, "", "", "",
+		"批量删除 License deleted="+strconv.Itoa(result.Deleted)+" skipped="+strconv.Itoa(result.Skipped))
+	c.JSON(http.StatusOK, gin.H{
+		"code": 0,
+		"message": "批量删除完成",
+		"data": dto.LicenseBatchDeleteResponse{
+			Deleted:    result.Deleted,
+			Skipped:    result.Skipped,
+			Failed:     result.Failed,
+			SkippedIDs: result.SkippedIDs,
+		},
+	})
+}
+
 // Renew 续期 // Logan.Li
 func (ctrl *LicenseController) Renew(c *gin.Context) {
 	id, _ := strconv.ParseUint(c.Param("id"), 10, 32)