Developer snapshot 2026-06-12

Automated developer snapshot of the main branch, for players who want the newest features before the next stable release. Expect rough edges; your save files stay compatible whenever possible, but back them up first.

Changes since the previous snapshot

• README: add uv's official install one-liners
• Updater: copy new root directories, make save preservation explicit
• README: document downloads, source prerequisites, and standalone builds
• Add in-game auto-updater with stable and dev channels
• Add macOS release builds
• Fix Linux-only test failure: frozen game_root test used a Windows path
• Point nightly builds at dev; fix the lint error blocking CI
• Correct leg terrain against real US geography
• Highway exits, cruise control, regional hazards, realistic deadlines
• Bug hunt: stall soft-lock, SAPI event voice, clock fixes, emergency brake
• Make saves portable: store everything in the game directory