When Claude finishes the last stop-event with the lid closed and no other active subagents, play a short "i'm tired" TTS phrase with a smooth cosine fade-out tail before calling pmset sleepnow. Previously the lid-closed path just played the all-done chime and cut straight to sleep — the abrupt transition felt jarring. New helper: slab/bin/claude-tired.py - Synthesizes "i'm tired" via macOS `say`, captures to a wav - Applies a cosine-windowed amplitude fade over the final ~1.2 s - Plays through sounddevice, holds a short silence pad at the end - Exits cleanly so the calling shell can fire pmset sleepnow next slab/bin/claude-stop.sh: - lid=closed + others=0 branch now calls the helper instead of afplay'ing the all-done.wav directly - Falls back to all-done.wav if the venv or helper is missing (so a broken install doesn't leave the machine silent on sleep) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>