This pull request refactors the codebase to replace usage of the os module with the pathlib module for file and path operations, enhancing cross-platform compatibility and code readability. It also improves path handling logic in several places, especially for subpath filtering and file verification. Additionally, some minor variable adjustments and ordering fixes are included.

Migration from os to pathlib for file and path operations:

• All file and directory checks, path manipulations, and file existence tests in tro_utils/cli.py and tro_utils/tro_utils.py now use pathlib instead of os, improving cross-platform robustness and code clarity. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] Fcb9268dL321R322)

Improvements to path handling logic:

• Subpath filtering in verify_replication_package now uses pathlib.PurePosixPath.relative_to for robust and accurate filtering, preventing errors with path substring logic.
• The base_filename property and related filename manipulations now use pathlib for resolving absolute paths.

Bug fixes and minor adjustments:

• The ordering of return values in verify_replication_package was corrected to match expected output. [1] [2]
• The default value for subpath in verify_package was changed from an empty string to None for clarity and correctness.
• Status assignment in generate_report was simplified for readability.