Update the game name in project.godot, export presets, UI/marquee/title strings, packaging (AppImage/NSIS/desktop/appdata), tools, docs, and the generated prop GLBs. Packaging assets and README screenshots are regenerated. Headless suite 209/209 and Python tooling tests pass.
- AppImage validation now passes appstreamcli --pedantic locally; builds with
metainfo named net.stepline.game.appdata.xml + desktop in usr/share/applications