Switches the Notification stinger from a single fixed "help me" line to a random pick from a phrase pool, fetched from the AC say endpoint with Jeffrey's ElevenLabs PVC and cached per-variant under ~/.local/share/slab/sounds/jeffrey/. Adds --prewarm to fetch every phrase upfront. Falls back to /usr/bin/say if the network fetch fails. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>