Merge: from baseplayer_vis_nre - Simplified how debug.invis works - Reimplemented how global.spectate and spectateid work - spectator no longer parents to the spectated player - Tightened existing debug logs around mystery baseplayer NRE. This eliminates a source of potential NREs related to players spectating others, but doesn't outright forbid them Tests: 2p sesions on Craggy, one player spectates other - killed scientist with AK(hs audio replicated), helicopter fly around, motorbike ride around, noclipped outside of usual network range and back, cycled invis, left the server and returned - no issues. Tried debug camera.