feat(core): add shared DTOs, MqttTopics constants, DatabaseBootstrapper, and ManagedMqttClient extensions

FinlyticCore/Models/Auth/ITradeClient.cs

@@ -1,16 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using FinlyticCore.Models.Trades;
-
-namespace FinlyticCore.Models.Auth;
-
-/// <summary>
-/// Strongly typed SignalR client interface for real-time WebSocket/SSE streaming.
-/// </summary>
-public interface ITradeClient
-{
-    Task OnTradeProposed(TradeProposalDto proposal);
-    Task OnTradeUpdated(TradeHourlyUpdateDto update);
-    Task OnTradeClosed(string tradeId, decimal exitPrice, string reason);
-    Task OnNewsReceived(object newsItem);
-}

FinlyticCore/Models/Auth/RegisterRequestDto.cs

@@ -1,22 +0,0 @@
-namespace FinlyticCore.Models.Auth;
-
-/// <summary>
-/// DTO representing a request for self-registration by a new user.
-/// </summary>
-public class RegisterRequestDto
-{
-    /// <summary>
-    /// User email address.
-    /// </summary>
-    public string Email { get; set; } = string.Empty;
-
-    /// <summary>
-    /// User plain-text password.
-    /// </summary>
-    public string Password { get; set; } = string.Empty;
-
-    /// <summary>
-    /// User full name.
-    /// </summary>
-    public string FullName { get; set; } = string.Empty;
-}