refactor: add type hinting to data processors

[leahaeusel]

Description and Context:
What and Why?

This PR adds type hinting to the data processors.

Related Issues and Pull Requests

• Closes
• Related to

Interested Parties

Note: More information on the merge request procedure in QUEENS can be found in the Submit a pull request section in the CONTRIBUTING.md file.

[Copilot]

Pull request overview

This PR refactors the queens.data_processors package to add/strengthen type hints across multiple concrete DataProcessor implementations, and updates tooling configuration so these modules are included in static type checking.

Changes:

• Added/updated type annotations and docstrings for DataProcessor and several file-based processors (CSV/NumPy/PVD/TXT).
• Improved a small piece of TXT parsing robustness (avoid failure when the logger prefix regex doesn’t match a line).
• Updated mypy/pre-commit exclude patterns to stop excluding src/queens/data_processors from checks.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
src/queens/data_processors/txt_file.py	Adds type hints and makes logger-prefix stripping resilient to non-matching lines.
src/queens/data_processors/pvd_file.py	Adds type hints for PVD reading/filtering and Path-like parameters.
src/queens/data_processors/numpy_file.py	Adds type hints for NumPy loading and Path-like parameters.
src/queens/data_processors/csv_file.py	Adds type hints and refactors filtering variable names; introduces stricter filter config typing.
src/queens/data_processors/_data_processor.py	Adds type hints to the abstract base processor and helper methods.
src/queens/data_processors/init.py	Adds typing improvements to lazy-import __getattr__ and postpones annotation evaluation.
pyproject.toml	Adjusts mypy exclude list to include data_processors in type checking.
.pre-commit-config.yaml	Keeps pre-commit’s mypy exclude list consistent with pyproject (include data_processors).

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[rjoussen]

Nice, type hinting makes coding so much nicer! I can look at it tomorrow probably. In the meantime, I think we have to be careful here with the merge order of #323: either you or me need to incorporate the changes the other PR made.

[leahaeusel]

In the meantime, I think we have to be careful here with the merge order of #323: either you or me need to incorporate the changes the other PR made.

Very good point! I think we should merge #323 first, so it doesn't become even bigger. @queens-py/developers, could anyone take another look at #323 and review it?

[leahaeusel]

Thank you very much for reviewing this extensive PR! I will also add the missing override decorators shortly.