Re-pins the rtc_session.rs seam hash (loud by design). loop_driver.rs unchanged. Default config reproduces pre-slice-5 behavior exactly. 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>