Task 5 review fixes: the 250ms readiness bound now wraps the whole Stats round trip (a wedged thread can stall the send, not just the reply), and the readyz integration test tears down its MediaThread like the sibling test does. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012QndwfhjyTiZcUYp87dwW8 Signed-off-by: Aaron D. Lee <himself@adlee.work>