Cataclysm v0.9.1

Run & Watch is now a guided Prepare, Calculate, Watch, and Understand journey. Outcomes open automatically, cached results replay immediately, manual controls remain available, solver failures provide local retry, and the persistent transport is the single tsunami playhead. Built locally with the GPU feature and verified across unit, browser, visual, accessibility, Rust, renderer-protocol, reference-scene, audit, and packaging gates. Windows installers are currently unsigned and may show an unknown-publisher warning.