openai/gpt-5.2-chat → A (2:1)

Side A introduces new functional behavior (skipping pinned/stickied Reddit posts), adds a dedicated helper function, updates documentation, and includes a comprehensive unit test. This meaningfully changes import semantics and improves correctness. Side B removes a redundant guard and adjusts tests to reflect existing behavior, which is a smaller refactor/cleanup. Overall, Side A delivers a more substantial contribution.