- Introduced `EkaerHistory` entity with status enum and new properties for EKÁER declaration lifecycle tracking.
- Added CRUD methods for `EkaerHistory` in controller interface and SignalR client.
- Implemented `GridEkaerHistory` and `GridEkaerDetail` components for displaying EKÁER records and trade card details.
- Enhanced `TradeCardItemType` with `IId<int>` for grid compatibility.
- Improved AcSignalRDataSource to skip server refresh for tagless/local data sources.
- Updated settings to include .NET 9 runtime install commands.
- Enhanced error handling in streaming methods of AcSignalRClientBase: deserialization errors are now logged and skipped instead of throwing.
- SignalResponseDataMessage.GetResponseData<T>() now throws InvalidCastException on type mismatch (was silent/null before).
- Updated README to document new casting and error behavior.
- Added Bash(dotnet workload *) command to settings.local.json.
- Removed GeneratedCode attribute from LocationType.cs.