Fix API offset limit 400 Bad Request, implement requested UI/UX improvements

src/Predictalytics.Infrastructure/Providers/Polymarket/PolymarketApiClient.cs

@@ -111,6 +111,16 @@ public class PolymarketApiClient
         return result ?? [];
     }
 
+    /// <summary>
+    /// Fetch CLOB orderbook for a given token ID.
+    /// </summary>
+    public async Task<OrderBookResponse?> GetOrderBookAsync(string tokenId, CancellationToken ct = default)
+    {
+        var url = $"/book?token_id={tokenId}";
+        _logger.LogDebug("Fetching orderbook for token: {TokenId}", tokenId);
+        return await ExecuteWithRetryAsync<OrderBookResponse>(_clobClient, url, "CLOB", ct);
+    }
+
     private async Task<T?> ExecuteWithRetryAsync<T>(HttpClient client, string url, string endpointGroup, CancellationToken ct, int attempt = 1)
     {
         await _rateLimiter.WaitAsync(PlatformType.Polymarket, ct, endpointGroup);