Co-op Fixes & Rebindable Controls

ONLINE CO-OP
- Fixed players who joined a host appearing frozen at the spawn point — everyone now sees each other move correctly.
- Player names: set your name on the main menu (defaults to your Steam name). Names float over your teammates, and turn red with DOWNED when someone needs a revive.
- You can no longer descend while a teammate is down — revive them first, so nobody gets left behind or skipped to the next floor.
- Fixed a freeze/crash when opening the safe-room skill terminal in online co-op.

CONTROLS
- Fully rebindable controls (Options > Controls): bind any action to a key OR a mouse button, with a Reset to Defaults option.
- Spray now defaults to Left Click and Taser to Right Click.
- New toggle: show your own name above your head (on by default).

WORLD
- Fixed some safe-room doors facing the wrong direction.

Note: your controls now default to Left Click = Spray and Right Click = Taser. Rebind anything in Options > Controls.