Provide feedback on inheritance structure for datatype checkboxes

[Copilot]

Responded to maintainer request for architectural feedback on the refactored datatype checkbox inheritance structure.

Context

The PR refactored from a parameter-based design (tab_name as constructor arg) to an inheritance-based design (tab_name as class attribute with BaseDatatypeCheckboxes base class and subclasses).

Feedback provided

• Architecture assessment: Inheritance structure is sound—provides better type safety, cleaner call sites, and clear separation between base functionality and transfer-specific mutual exclusion logic
• Minor optimization noted: TransferDatatypeCheckboxes.__init__ is redundant (only calls super() with same args) and can be removed
• Extensibility: Current structure supports future behavioral differences between create/transfer tabs without mixing concerns

No code changes made—this was a review-only response to maintainer question.

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