Consumer port of Red Planet: sellable on Steam, internet multiplayer, playable without cockpit hardware. Adds the project README and docs/RP412-ROADMAP.md covering the three workstreams (vRIO-derived input/display, TeslaConsole-derived session UI, Steamworks networking) and the Steam logistics assessment. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>