Move the valid filename regex pattern to a shared constant in `app/utils/filename_utils.py` and update both the task logic and security tests to use it. This eliminates duplication and ensures consistency across the codebase.
Changes:
- Defined `VALID_FILENAME_PATTERN` and `VALID_FILENAME_RE` in `app/utils/filename_utils.py`.
- Updated `app/tasks/extract_metadata_with_gpt.py` to use `VALID_FILENAME_RE`.
- Updated `tests/test_path_traversal_security.py` to use `VALID_FILENAME_PATTERN`.
This refactoring addresses the duplication mentioned in the TODO in `tests/test_path_traversal_security.py`.
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
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