~anthropic/claude-sonnet-latest → B (60:40)

B is a small, precise bugfix that removes ghost items and false voted_pairs entries from the reducer's core ranking logic, correcting a real correctness issue with accompanying test verification. A is a larger feature (theme switcher rework + room-scoped URL helpers) that adds value but is more speculative/UI-focused, mixes several concerns, and lacks the surgical correctness guarantee of B's fix to core data integrity.