feat(Core): update DTOs and shared models

FinlyticCore/Models/Trades/CloseTradeRequest.cs

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+using System;
+
+namespace FinlyticCore.Models.Trades;
+
+/// <summary>
+/// Request payload for manually closing an active trade via REST API.
+/// </summary>
+public class CloseTradeRequest
+{
+    public decimal UserExitPrice { get; set; }
+    public DateTime? UserExitTimestamp { get; set; }
+    public string CloseReason { get; set; } = "ManualClosure"; // "TakeProfitHit", "StopLossHit", "ManualClosure", "TimeExpired"
+}

FinlyticCore/Models/Trades/TradeAcceptanceDto.cs

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+using System;
+
+namespace FinlyticCore.Models.Trades;
+
+public class TradeAcceptanceDto
+{
+    public string TradeId { get; set; } = string.Empty;
+    public string AnalysisId { get; set; } = string.Empty;
+    public string Isin { get; set; } = string.Empty;
+    public string? UserId { get; set; } = "default_user";
+
+    public decimal? ActualEntryPrice { get; set; }
+    public decimal? PositionSize { get; set; }
+    public decimal? LeverageUsed { get; set; } = 1;
+    public decimal? EntryFee { get; set; } = 0;
+    public decimal? ExitFee { get; set; } = 0;
+    
+    public string? Symbol { get; set; }
+    public string? SignalType { get; set; }
+    public decimal? EntryPrice { get; set; }
+    public decimal? StopLoss { get; set; }
+    public decimal? TakeProfit { get; set; }
+    public string? InstrumentType { get; set; }
+    public string? Timeframe { get; set; }
+    public string? Reasoning { get; set; }
+
+    public DateTime? ExecutionTimestamp { get; set; }
+    public decimal? Quantity { get; set; }
+    public decimal? KnockoutThreshold { get; set; }
+    public bool IsRecurring { get; set; } = false;
+}

FinlyticCore/Models/Trades/TradeFeedbackRecord.cs

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+using System;
+using FinlyticCore.Models.Analyzer;
+
+namespace FinlyticCore.Models.Trades;
+
+/// <summary>
+/// Structured closed trade record exported to JSON/Parquet for AI win-rate calibration feedback loops.
+/// </summary>
+public class TradeFeedbackRecord
+{
+    public string TradeId { get; set; } = string.Empty;
+    public string AnalysisId { get; set; } = string.Empty;
+    public string Sector { get; set; } = string.Empty;
+    public string Symbol { get; set; } = string.Empty;
+    public string Isin { get; set; } = string.Empty;
+    
+    public decimal EntryPrice { get; set; }
+    public decimal StopLoss { get; set; }
+    public decimal TakeProfit { get; set; }
+    public decimal UserExitPrice { get; set; }
+    
+    public decimal PnlAbsolute { get; set; }
+    public decimal PnlPercent { get; set; }
+    public bool IsWin { get; set; }
+    
+    public string CloseReason { get; set; } = string.Empty;
+    public VixMarketRegime VixRegime { get; set; }
+    public decimal VixValue { get; set; }
+    
+    public double ReactionDelayMinutes { get; set; }
+    public decimal SlippagePercent { get; set; }
+    
+    public DateTime CreatedAt { get; set; }
+    public DateTime ClosedAt { get; set; }
+}

FinlyticCore/Models/Trades/TradeHourlyUpdateDto.cs

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+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;
+}

FinlyticCore/Models/Trades/TradeProposalDto.cs

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+using System;
+using System.Collections.Generic;
+using FinlyticCore.Models.Analyzer;
+
+namespace FinlyticCore.Models.Trades;
+
+/// <summary>
+/// Trade proposal generated by FinlyticAnalyzer and dispatched via MQTT QoS 2.
+/// </summary>
+public class TradeProposalDto
+{
+    public string TradeId { get; set; } = string.Empty;
+    public string? UserId { get; set; }
+    public bool IsGlobalProposal { get; set; } = true;
+    public string Status { get; set; } = "Proposed";
+
+    public string AnalysisId { get; set; } = string.Empty;
+    public string EventId { get; set; } = string.Empty;
+    public string Sector { get; set; } = string.Empty;
+    public string Symbol { get; set; } = string.Empty;
+    public string Isin { get; set; } = string.Empty;
+    public string CompanyName { get; set; } = string.Empty;
+    
+    public decimal EntryPrice { get; set; }
+    public decimal StopLoss { get; set; }
+    public decimal TakeProfit { get; set; }
+    
+    public string SignalType { get; set; } = "BUY"; // "BUY", "SELL"
+    public string RiskTolerance { get; set; } = "Moderate"; // "Conservative", "Moderate", "Aggressive"
+    public string Timeframe { get; set; } = "1D"; // "1H", "4H", "1D", "1W"
+    public string InstrumentType { get; set; } = "Stock"; // "Stock", "Option", "CFD", "Crypto"
+    
+    public double WinRate { get; set; }
+    public VixMarketRegime VixRegime { get; set; }
+    public decimal VixValue { get; set; }
+    
+    public int TtlMinutes { get; set; } = 60;
+    public string Reasoning { get; set; } = string.Empty;
+    
+    // --- New Fields for Detailed Execution & Rationale ---
+    public decimal? EntryZoneMin { get; set; }
+    public decimal? EntryZoneMax { get; set; }
+    public List<decimal>? TakeProfitTargets { get; set; }
+    public decimal? RiskRewardRatio { get; set; }
+    public decimal? MaxLeverage { get; set; }
+    
+    public string TechnicalRationale { get; set; } = string.Empty;
+    public string FundamentalRationale { get; set; } = string.Empty;
+    public string RiskWarning { get; set; } = string.Empty;
+
+    // --- Real Trade Execution Data ---
+    public decimal? ActualEntryPrice { get; set; }
+    public decimal? PositionSize { get; set; }
+    public decimal? LeverageUsed { get; set; }
+    public decimal? EntryFee { get; set; }
+    public decimal? ExitFee { get; set; }
+    public DateTime? ExecutionTimestamp { get; set; }
+    public decimal? Quantity { get; set; }
+    public decimal? KnockoutThreshold { get; set; }
+    public bool IsRecurring { get; set; } = false;
+
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+}

FinlyticCore/Models/Trades/TradeStatus.cs

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+namespace FinlyticCore.Models.Trades;
+
+/// <summary>
+/// Status of a proposed/active trade lifecycle.
+/// </summary>
+public enum TradeStatus
+{
+    Proposed = 0,
+    Active = 1,
+    Closed = 2,
+    Expired = 3,
+    Rejected = 4,
+    Invalidated = 5
+}