- server/run_server.sh: checks Godot is 4.7+, imports a fresh copy once
(the class cache in .godot/ isn't in git), then starts the server
- The dedicated server refuses to start, with a clear reason, on Godot
older than 4.7 or when the game's scripts failed to load, instead of
claiming to listen
- tests/run_all.sh imports a fresh copy first
- Setup doc: 4.7+ (not 4.3+), importing a fresh copy, running a server
