Merge upstream into main

Dependencies

• [2] 3WNNXA6U bugfix: get tests to pass
• [3] JIK7ZRYI bugfix: imprecision in drawing
• [4] VSBSWTE4 bugfix: where cursor is drawn
• [5] 5XQ4Y7NU reorg manual tests doc
• [*] BJ5X5O4A let's prevent the text cursor from ever getting on a drawing

Change contents

• edit in Manual_tests.md at line 15
  [4.1687]

  [2.338]
  + - analogously, how a shape precisely looks as you draw it
• edit in Manual_tests.md at line 18
  [4.1687]→[3.155:217](∅→∅)
  − - analogously, how a shape precisely looks as you draw it
• resolve order conflict in Manual_tests.md at line 18
  [2.385]

  [4.168]