Comment by theshrike79

Mine has "always run `task build` before claiming a task as done"

For all of my projects task build runs linters, tests and builds the project with as little output as possible on a happy path.

This catches a bunch of "it's a pre-existing issue" stuff from Claude. Sometimes I ask it to run build first, then start implementing just so that it can prove to itself that no, it wasn't a pre-existing issue, you broke something.