Merge upstream into main

Dependencies

• [2] HN32EW6Z sync directory with pensieve.love
• [3] TGZAJUEF bring back a set of constants
• [4] LF7BWEG4 group all editor globals
• [5] MSDHRXWU Merge upstream into main
• [6] 2L5MEZV3 experiment: new edit namespace

Change contents

• resurrect zombie in edit.lua at line 104
  [4.3616]→[2.15:93](∅→∅),[4.3616]→[2.15:93](∅→∅)
  + directory = dirname(love.filesystem.getSaveDirectory())..'pensieve/data',