openai/gpt-5.2-chat → B (3:2)

Side B prevents pinned/stickied Reddit posts from being imported by adding `child_is_pinned` and filtering in `parse_children`, plus a focused test—improving data correctness and avoiding persistent noise in stored listings. Side A refactors row coloring to use min–max score normalization and adds solid tests, but it primarily affects UI presentation rather than core data integrity or behavior.