Add logging for owned keys in KaigenService

- Enhanced logging to include the count of owned keys fetched for a user.
- Added detailed logging for each owned key's agent name.

src/Managing.Infrastructure.Web3/Services/KaigenService.cs

@@ -182,6 +182,12 @@ public class KaigenService : IKaigenService
                 "Successfully fetched owned keys for user {UserName} (wallet: {WalletAddress})",
                 user.Name, walletAddress);
 
+            _logger.LogInformation("Owned keys: {OwnedKeys}", result.Items.Count);
+            foreach (var item in result.Items)
+            {
+                _logger.LogInformation("Owned key: {OwnedKey}", item.AgentName);
+            }
+
             return result;
         }
         catch (Exception ex)