- Add `DepartmentLaneDynamicImageRouteTest` to verify dynamic image preview handling for studio lanes.
- Introduce `selfserve_machine_signal` class to standardize signal normalization, recording, and gateway signal management workflows.
- Add `selfserve_virtual_hardware` class to handle virtual hardware configurations, including gateway and binding management.
- Enhance structure with auxiliary methods for payload normalization, workspace merging, and validation warnings.
- Implement generation detection logic for Shelly devices using model codes, metadata, and type inference.
- Extend relay switch and inventory handling to include generation capabilities.
- Ensure compatibility with Gen1, Gen2, and Gen3 devices for relay control and diagnostics.
- Update unit tests to validate generation inference, fallback behavior, and API compatibility.