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>
