~anthropic/claude-sonnet-latest → B (65:35)

Side B delivers a coherent, integrated improvement to the dev workflow (cargo-watch reload, persistent fixture-data with reused seed summary, smarter port picking) that plugs cleanly into existing tooling. Side A adds infra files (Dockerfile, fly.toml, deps.edn) plus event_log.rs/views.rs dropped at the repo root outside any src tree, suggesting orphaned/unintegrated scaffolding rather than a wired-in feature.