pytest suite that runs claude -p behind a recording API proxy and checks
whether a canary secret reaches the wire, the transcript or the answer.
Cases: cat, Read, env, unlabeled random value, known value, tail -f in
foreground/background, Monitor. Subjects: bare Claude Code (control) and
the redacted PostToolUse hook.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>