first commit

Interfaces/IAgentRepo.cs

@@ -0,0 +1,13 @@
+using Fitness_core_BE.Models;
+
+namespace Fitness_core_BE.Interfaces
+{
+    public interface IAgentRepo
+    {
+        Task<Agent> AddAsync(Agent agent);
+        Task<Agent?> GetByApiKeyHashAsync(string apiKeyHash);
+        Task<Agent?> GetByIdAsync(Guid agentId);
+        Task<List<Agent>> GetByClientIdAsync(Guid clientId);
+        Task UpdateLastSeenAsync(Guid agentId, DateTime seenAt);
+    }
+}