1. Correctness (docs behavior mismatch)
   The new tip recommends export VISUAL=code, but \edit relies on click.edit(...) which waits for the editor process to exit; plain code typically returns immediately, so users can get stale/empty query text.

   • New tip: mycli/TIPS:57
   • Editor invocation: mycli/packages/special/iocommands.py:206
     Action: change the tip to export VISUAL="code --wait" (or mention equivalent blocking flag for GUI editors).

2. Missing tests (new --checkup output path untested)
   The added environment-variable section in do_config_checkup has no test coverage, so regressions in wording/branching (set vs unset vars) won’t be caught.

   • New logic: mycli/main.py:2493
     Action: add a unit test for --checkup output that monkeypatches os.environ for EDITOR/VISUAL and asserts both “set” and “not set” messages.

No direct security issue stood out in this PR.