feat(Core): update DTOs and shared models

FinlyticCore/Models/Trades/TradeHourlyUpdateDto.cs

@@ -0,0 +1,20 @@
+using System;
+
+namespace FinlyticCore.Models.Trades;
+
+/// <summary>
+/// Hourly AI recommendation update for an active trade.
+/// </summary>
+public class TradeHourlyUpdateDto
+{
+    public string TradeId { get; set; } = string.Empty;
+    public string Recommendation { get; set; } = "Hold"; // "Hold", "AdjustSL", "AdjustTP", "Close"
+    
+    public decimal CurrentPrice { get; set; }
+    public decimal? SuggestedStopLoss { get; set; }
+    public decimal? SuggestedTakeProfit { get; set; }
+    public decimal VixValue { get; set; }
+    
+    public string Reasoning { get; set; } = string.Empty;
+    public DateTime Timestamp { get; set; } = DateTime.UtcNow;
+}