make preprocessing more obvious

Dependencies

• [2] WYKKFV2G prevent overriding foundational definitions
• [3] QFURHRTP rename globals to have a single uppercase letter
• [4] H3RX6UWR abortive experiment: keep definitions independent
• [5] LRDM35CE app running again
• [6] D27H6QAC undo previous commit

Change contents

• edit in live.lua at line 33
  [3.1754]

  [3.1754]
  + live.freeze_all_existing_definitions()

  +
• edit in live.lua at line 40
  [3.221]→[2.12:53](∅→∅)
  − live.freeze_all_existing_definitions()