- Enforce `weight > 0` and `value > 0` for each trade item in `EkaerTradeCardValidator` (NAV 2021+ requirement); add tests for zero/missing values.
- Add grid layout roaming tags (90010–90012) to `AcSignalRTags` for key-value layout storage.
- Suppress info-level logging for SignalR ping messages in `AcBinaryHubProtocol`.
- Update EKÁER and SignalR documentation with new rules, tags, and latest legal references (2026-07).
- Add new build/test scripts to `settings.local.json`.
Introduced IEkaerSubmitService and EkaerSubmitService for orchestrated EKÁER trade card validation and submission, with result encapsulation via EkaerSubmitResult. Added IEkaerTradeCardValidator and EkaerTradeCardValidator for schema and business rule validation. Comprehensive unit tests cover validation logic and submission flow. All code is generic and project-agnostic.
Loretta