openai/gpt-5.2-chat → A (3:1)

Side A adds a concrete behavioral improvement by skipping stickied/pinned Reddit posts during import via a new `child_is_pinned` check in `parse_children`, along with a focused test verifying only non-pinned posts are returned. Side B merely removes a zero-ratio early return in `apply_vote` and adjusts a test, changing when items are registered but not adding new functionality; it’s largely cleanup of redundant logic.