* **DevicetreeCompiler**
* Binding properties now support default values.
* Compiler returns meaningful exit codes and reports errors more clearly.
* Stronger validation of device configurations with unified error handling.
* Added integration tests and a dedicated Devicetree test workflow.
* **Changes**
* Platform binding schemas updated: some fields made required, others gained explicit defaults.
* Many device-tree files simplified by removing unused/placeholder pin and transfer-size entries.
* **Documentation**
* Removed several outdated TODO items.
