~anthropic/claude-sonnet-latest → B (6:4)

Side B adds a focused, meaningful test verifying the rank-centrality algorithm correctly recovers order from a random spanning-tree of votes, adding real regression coverage for core ranking logic. Side A's commit, while improving dev tooling (persistent fixture data, cargo-watch), also silently removes UI elements from the room page unrelated to its stated purpose, mixing dev-script improvements with an unexplained regression.