refactor: archive 12 dead gRPC RPCs with [ARCHIVED] markers

Archived RPCs (code preserved, marked obsolete):
- fms.proto: excluded from csproj (CreateNewFileInfo, DeleteFileInfo)
- UserOrderService: GetOrdersByDateRange, CreateNewOrderForCustomer, SubmitOrderForCustomer
- ConfigurationService: DeactivateConfiguration, GetConfigurationHistory
- CityService: UpdateCity, DeleteCity
- HealthService: GetServiceHealth
- CategoryService: GetCategoryByIdForCustomer
- inventory.proto: BulkAdjustStock (no implementation existed)

All archived RPCs wrapped in #region [ARCHIVED] with [Obsolete] attributes.
No code deleted — archive only. Build passes with 0 errors.

src/CMSMicroservice.WebApi/Services/CityService.cs

@@ -177,6 +177,8 @@ public class CityService : CityContract.CityContractBase
         };
     }
 
+    #region [ARCHIVED] UpdateCity & DeleteCity — شهرها seed data هستند، ویرایش/حذف دستی باعث خرابی آدرس‌ها می‌شود
+    [Obsolete("ARCHIVED: Cities are seed data — manual edit/delete breaks user addresses")]
     public override async Task<Empty> UpdateCity(
         UpdateCityRequest request, ServerCallContext context)
     {
@@ -195,6 +197,7 @@ public class CityService : CityContract.CityContractBase
         return new Empty();
     }
 
+    [Obsolete("ARCHIVED: Cities are seed data — manual delete breaks user addresses")]
     public override async Task<Empty> DeleteCity(
         DeleteCityRequest request, ServerCallContext context)
     {
@@ -206,6 +209,7 @@ public class CityService : CityContract.CityContractBase
         await _context.SaveChangesAsync(context.CancellationToken);
         return new Empty();
     }
+    #endregion
 
     #endregion
 }