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/HealthService.cs

@@ -25,9 +25,11 @@ public class HealthService : HealthContract.HealthContractBase
         return result.Adapt<GetSystemHealthResponse>();
     }
 
+    #region [ARCHIVED] GetServiceHealth — تکراری: GetSystemHealth کل سیستم را برمی‌گرداند، فیلتر client-side کافی است
+    [Obsolete("ARCHIVED: Use GetSystemHealth + client-side filter by service name")]
     public override async Task<GetServiceHealthResponse> GetServiceHealth(GetServiceHealthRequest request, ServerCallContext context)
     {
-        // For now, just return system health filtered by service name
+        // [ARCHIVED] duplicate — GetSystemHealth returns all, client can filter
         var systemHealthQuery = new GetSystemHealthQuery();
         var systemHealth = await _mediator.Send(systemHealthQuery, context.CancellationToken);
         
@@ -45,4 +47,5 @@ public class HealthService : HealthContract.HealthContractBase
             CheckedAt = Google.Protobuf.WellKnownTypes.Timestamp.FromDateTime(DateTime.UtcNow)
         };
     }
+    #endregion
 }