Initial commit: HelpDesk ICHN - .NET 10 backend + Next.js 16 frontend

backend/HelpDesk.Data/Repositories/IUserRepository.cs

@@ -0,0 +1,15 @@
+using HelpDesk.Models.Entities;
+using HelpDesk.Models.Enums;
+
+namespace HelpDesk.Data.Repositories;
+
+public interface IUserRepository
+{
+    Task<User?> GetByIdAsync(Guid id);
+    Task<User?> GetByEmailAsync(string email);
+    Task<IEnumerable<User>> GetAllAsync();
+    Task<IEnumerable<User>> GetByRoleAsync(UserRole role);
+    Task<User> CreateAsync(User user);
+    Task<User?> UpdateAsync(User user);
+    Task<bool> ExistsAsync(string email);
+}