- Replace manual vector math in UpdateTransform with CalcLocalTransform and vec.h macros (LERP3, SET3, MV3, DISTSQRD3, ZEROVEC3)
- Remove all SDL_Log debug logging from multiplayer code
- Strip extraneous comments that restate the code
- Extract CreateAndSpawnPlayer helper to consolidate repeated spawn pattern
- Simplify UpdateVehicleState control flow
- Remove unused includes (SDL_log.h, mxgeometry/mxmatrix.h)
- WebSocket relay server (Cloudflare Worker + Durable Object)
- Remote player character cloning with walk/idle/ride animations
- Vehicle support for remote players
- INI config for relay URL
- Extension hook for world transition ROI management
