feat(frontend): Replace React with Blazor frontend

frontend/Services/IApiService.cs

@@ -0,0 +1,36 @@
+using NimbusFlow.Frontend.Models;
+
+namespace NimbusFlow.Frontend.Services
+{
+    public interface IApiService
+    {
+        // Member operations
+        Task<List<Member>> GetMembersAsync();
+        Task<Member?> GetMemberAsync(int id);
+        Task<Member> CreateMemberAsync(Member member);
+        Task<Member> UpdateMemberAsync(Member member);
+        Task<bool> DeleteMemberAsync(int id);
+
+        // Classification operations
+        Task<List<Classification>> GetClassificationsAsync();
+
+        // Service operations
+        Task<List<Service>> GetServicesAsync();
+        Task<Service?> GetServiceAsync(int id);
+        Task<Service> CreateServiceAsync(Service service);
+
+        // Schedule operations
+        Task<List<Schedule>> GetSchedulesAsync();
+        Task<List<Schedule>> GetMemberSchedulesAsync(int memberId);
+        Task<Schedule?> GetScheduleAsync(int id);
+        Task<Schedule> AcceptScheduleAsync(int scheduleId);
+        Task<Schedule> DeclineScheduleAsync(int scheduleId, string? reason = null);
+        Task<bool> RemoveScheduleAsync(int scheduleId);
+
+        // Scheduling operations
+        Task<Schedule?> ScheduleNextMemberAsync(int serviceId, List<int> classificationIds);
+
+        // Service Types
+        Task<List<ServiceType>> GetServiceTypesAsync();
+    }
+}