In the file .claude/plugins/quacker-channel/src/acp_dispatch.rs there is a pure function `fn job_slug(id: &str) -> String` and an existing `#[cfg(test)] mod tests`. Add one new `#[test]` function to that tests module that verifies job_slug strips punctuation such as "!", "@" and "/" from an id while keeping letters, digits, underscore and dash. Work out the correct expected output yourself from the function body. Change nothing else. Then run: git add -A && git commit -m "test: job_slug strips punctuation".