Complete FrontOffice BFF to CMS Migration

- Migrated all 9 services from FrontOffice.BFF to CMS architecture
- Enhanced user.proto with 7 additional Customer API endpoints:
  * UpdateCustomerProfile, GetCustomerProfile
  * ChangeCustomerPassword with validation
  * GetCustomerReferrals with commission stats
  * UploadCustomerAvatar with file validation
  * GetCustomerSettings, UpdateCustomerSettings
- All services now support Customer endpoints with /Customer/ prefix
- Mock implementations with realistic Persian data
- Fixed namespace conflicts and compilation issues
- Comprehensive testing completed for all endpoints
- Services migrated: Categories, City, UserCarts, Products, UserWallet,
  Transaction, UserOrder, Package, User (enhanced)

src/CMSMicroservice.WebApi/Services/HealthService.cs

@@ -0,0 +1,48 @@
+using CMSMicroservice.Protobuf.Protos.Health;
+using CMSMicroservice.Application.HealthCQ.Queries.GetSystemHealth;
+using MediatR;
+using Mapster;
+using Grpc.Core;
+using Google.Protobuf.WellKnownTypes;
+using System.Linq;
+
+namespace CMSMicroservice.WebApi.Services;
+
+public class HealthService : HealthContract.HealthContractBase
+{
+    private readonly IMediator _mediator;
+
+    public HealthService(IMediator mediator)
+    {
+        _mediator = mediator;
+    }
+
+    public override async Task<GetSystemHealthResponse> GetSystemHealth(Empty request, ServerCallContext context)
+    {
+        var query = new GetSystemHealthQuery();
+        var result = await _mediator.Send(query, context.CancellationToken);
+        
+        return result.Adapt<GetSystemHealthResponse>();
+    }
+
+    public override async Task<GetServiceHealthResponse> GetServiceHealth(GetServiceHealthRequest request, ServerCallContext context)
+    {
+        // For now, just return system health filtered by service name
+        var systemHealthQuery = new GetSystemHealthQuery();
+        var systemHealth = await _mediator.Send(systemHealthQuery, context.CancellationToken);
+        
+        var service = systemHealth.Services.FirstOrDefault(s => 
+            s.ServiceName.Equals(request.ServiceName, StringComparison.OrdinalIgnoreCase));
+
+        if (service == null)
+        {
+            throw new ArgumentException($"Service '{request.ServiceName}' not found");
+        }
+
+        return new GetServiceHealthResponse
+        {
+            Service = service.Adapt<ServiceHealthModel>(),
+            CheckedAt = Google.Protobuf.WellKnownTypes.Timestamp.FromDateTime(DateTime.UtcNow)
+        };
+    }
+}