openai/gpt-5.3-chat → A (20:1)

Commit A performs a major structural refactor: removes a 1400+ line monolithic file, introduces a modular architecture (multiple new modules like feed, views, paginator, profile, etc.), and reorganizes responsibilities across the codebase. This significantly improves maintainability, clarity, and extensibility. Commit B is a trivial UI tweak (changing a disabled span to an anchor). The impact difference is substantial.