feat(data): add __repr__ and describe() to OTXDataset for better debug

[christianfaccio]

Summary

Add __repr__ and describe() methods to the OTXDataset base class for improved debuggability.

Currently, printing an OTXDataset instance shows an unhelpful default like <OTXDetectionDataset object at 0x7f...>. This PR adds:

• __repr__: Returns a concise summary string, e.g. VisionDataset(num_samples=100, num_classes=5). Uses
  type(self).__name__ so subclasses automatically display the correct class name without needing to override.
• describe(): Returns a dictionary with dataset metadata (class_name, num_samples, num_classes,
  label_names, has_transforms), useful for programmatic introspection during development and debugging.

Both methods are O(1) and rely on existing attributes (label_info, dm_subset, transforms).

How to test

uv run pytest library/tests/unit/data/dataset/test_base.py -v

All tests pass (12 pre-existing + 5 new).

[kprokofi]

Please, update the branch with latest develop. Your changes can be merged

[Copilot]

Pull request overview

Adds lightweight introspection utilities to the OTXDataset base class to make debugging and interactive inspection more informative.

Changes:

• Implement OTXDataset.__repr__ to show class name, sample count, and class count.
• Add OTXDataset.describe() to return a metadata dictionary for programmatic inspection.
• Add unit tests covering the new __repr__/describe() behavior.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
library/src/getitune/data/dataset/base.py	Adds __repr__ and describe() to OTXDataset.
library/tests/unit/data/dataset/test_base.py	Adds unit tests validating __repr__ and describe() output.

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[christianfaccio]

Hi @kprokofi, thanks for the review. I have rebased the branch onto the latest develop and updated the PR base accordingly. Given that the file moved from lib/src/otx/ to library/src/getitune/ during the refactor, I re-applied the change at the new path and ported the tests to match the new test style. I have also updated the PR description. Let me know if anything else is needed!

[codecov-commenter]

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[christianfaccio]

Just renamed from OTXDataset to VisionDataset, tests passed locally.