feat(appointments): expose destination warehouse options

lastleg-service/src/main/java/com/baiyue/lastleg/appointmentplanning/AppointmentCargoService.java

@@ -35,6 +35,11 @@ public class AppointmentCargoService {
         return new PageResult<>(rows, page, size, total, (total + size - 1) / size);
     }
 
+    /** 查询下拉框与货物分页共用权威目录范围，不从当前页猜测目的仓。 */
+    public List<String> destinations() {
+        return scope().destinations().stream().distinct().sorted().toList();
+    }
+
     private record Scope(List<String> origins, List<String> destinations) { }
     private Scope scope() {
         final List<AppointmentWarehouseClient.Warehouse> catalog;

lastleg-service/src/main/java/com/baiyue/lastleg/appointmentplanning/AppointmentPlanningController.java

@@ -53,6 +53,14 @@ public class AppointmentPlanningController {
         return ApiResponse.success(new Resolved(source,result.get(0)));
     }
 
+    /** 目的仓选项沿用货物查询权限，只返回同范围的美国FBA仓码。 */
+    @GetMapping("/cargo/destinations")
+    @PreAuthorize("hasAuthority('platform:appointment:list') and hasAuthority('platform:overseas-warehouse:last-mile-order:list')")
+    public ApiResponse<java.util.List<String>> destinations(@AuthenticationPrincipal AuthenticatedUser user) {
+        requirePlatform(user);
+        return ApiResponse.success(service.destinations());
+    }
+
     @GetMapping("/cargo")
     @PreAuthorize("hasAuthority('platform:appointment:list') and hasAuthority('platform:overseas-warehouse:last-mile-order:list')")
     public ApiResponse<PageResult<AppointmentCargo>> cargo(@AuthenticationPrincipal AuthenticatedUser user,