feat(lastleg): add container plan preview

lastleg-service/src/main/java/com/baiyue/lastleg/inboundplan/controller/InboundPlanController.java

@@ -4,6 +4,7 @@ import com.baiyue.common.core.api.ApiResponse;
 import com.baiyue.common.core.api.PageResult;
 import com.baiyue.common.security.AuthenticatedUser;
 import com.baiyue.lastleg.inboundplan.dto.ConvertContainerInboundPlanRequest;
+import com.baiyue.lastleg.inboundplan.dto.ContainerInboundPlanPreviewResponse;
 import com.baiyue.lastleg.inboundplan.dto.ManualInboundPlanRequest;
 import com.baiyue.lastleg.inboundplan.dto.BatchFbaAppointmentRequest;
 import com.baiyue.lastleg.inboundplan.dto.FbaAppointmentResponse;
@@ -71,6 +72,19 @@ public class InboundPlanController {
         return ApiResponse.success(service.convertContainer(request.sourceContainerBookingId()));
     }
 
+    @GetMapping("/container-preview")
+    @PreAuthorize("hasAuthority('" + OverseasPermissions.INBOUND_ORDER_LIST + "')")
+    @Operation(summary = "预览按柜生成入库计划", description = "按稳定 sourceContainerBookingId 返回全柜服务端分组、托数、就绪与阻断事实；确认时必须回传 snapshotVersion/snapshotHash。Required authority: "
+        + OverseasPermissions.INBOUND_ORDER_LIST)
+    public ApiResponse<ContainerInboundPlanPreviewResponse> previewContainer(
+        @AuthenticationPrincipal AuthenticatedUser user,
+        @RequestParam String sourceContainerBookingId) {
+        if (user == null || user.tenantId() == null || user.tenantId() != 0L || !"PLATFORM".equals(user.appCode())) {
+            throw new ResponseStatusException(HttpStatus.FORBIDDEN, "仅平台账号可预览整柜入库计划");
+        }
+        return ApiResponse.success(service.previewContainer(sourceContainerBookingId));
+    }
+
     @GetMapping("/{planNo}")
     @PreAuthorize("hasAuthority('" + OverseasPermissions.INBOUND_ORDER_LIST + "')")
     /** 查询入仓计划及其明细、托盘和分配信息。 */