player respawn points

on player death, should be able to respawn at last checkpoint

- checkpoints can be added as basic objects in level itself / research best way to do this

No files, tests, or entry points are named. Start by locating the player-death handling and how levels represent basic objects, then research how checkpoints should be stored and selected. Done means a player respawns at the last checkpoint after death, with checkpoint placement in a level working reliably.

Written by the indexing model from the issue text.