Add unit tests for `finalize` module#349

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ppinchuk merged 2 commits intomainfrom

pp/utilities_finalize_unit_tests

Dec 6, 2025

Commits on Nov 20, 2025

Added test_utilities_finalize.py exercising metadata persistence, document aggregation, DB splitting, and summary helpers to fully validate finalize.py.
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Merge remote-tracking branch 'origin/main' into pp/utilities_finalize_unit_tests
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