Cataclysm v0.8.5

Live-Earth launch cinematic with a skippable five-second identity sequence, reduced-motion fallback, first/always/never preferences, Settings preview, and a safety-notice handoff before runnable actions. Verified locally with 299 unit tests, 47 headless browser tests, 124 Rust release tests, the strict 24-scene 1440p/4K reference matrix, and a GPU-enabled packaged-binary probe. Installers are currently unsigned and may show a Windows publisher warning.