feat: Add category performance, update WebUI and OpenRouter integration, fix bugs

src/Predictalytics.Application/DTOs/MarketDetailDto.cs

@@ -8,6 +8,7 @@ public class MarketDetailDto
     public string Question { get; set; } = "";
     public string? Description { get; set; }
     public string Category { get; set; } = "";
+    public string Subcategory { get; set; } = "";
     public double Volume { get; set; }
     public double Liquidity { get; set; }
     public DateTime? EndDate { get; set; }

src/Predictalytics.Application/DTOs/TradeDto.cs

@@ -9,6 +9,7 @@ public record TradeDto(
     string Platform,
     int? DbMarketId,
     string MarketId,
+    string MarketName,
     string Outcome,
     string Side,
     decimal Price,

src/Predictalytics.Application/DTOs/TraderDto.cs

@@ -43,5 +43,15 @@ public record TraderDetailDto(
     DateTime CreatedAt,
     DateTime? LastPolledAt,
     string? AiStrategySummary,
-    IReadOnlyList<TradeDto> RecentTrades
+    IReadOnlyList<TradeDto> RecentTrades,
+    IReadOnlyList<TraderCategoryPerformanceDto> CategoryPerformances
+);
+
+public record TraderCategoryPerformanceDto(
+    string Category,
+    decimal TotalVolume,
+    decimal TotalPnL,
+    int TotalTrades,
+    int WinningTrades,
+    decimal WinRate
 );