feat(voice-notify): add ElevenLabs TTS voice notification skill

- SKILL.md with integration patterns (cruncher jobs, agent hooks, post-build)
- scripts/cruncher-notify.sh wrapper for long-running jobs
- Voice toggle via VOICE_NOTIFY env var

skills/voice-notify/scripts/cruncher-notify.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# cruncher-notify.sh — Wrapper für Jobs mit Voice Notification
+# Usage: cruncher-notify.sh "Job Name" -- <command...>
+# Example: cruncher-notify.sh "Data Import" -- python3 import.py --input data.csv
+set -euo pipefail
+
+JOB_NAME="$1"
+shift
+[ "$1" = "--" ] && shift || { echo "Usage: $0 \"Job Name\" -- <command...>"; exit 1; }
+
+START_TS=$(date +%s)
+
+echo "▶ $JOB_NAME gestartet: $(date +%H:%M:%S)"
+
+set +e
+"$@"
+JOB_EXIT=$?
+set -e
+
+END_TS=$(date +%s)
+DURATION=$(( END_TS - START_TS ))
+MIN=$(( DURATION / 60 ))
+SEC=$(( DURATION % 60 ))
+
+if [ "$JOB_EXIT" -eq 0 ]; then
+  STATUS_TEXT="erfolgreich"
+  STATUS_ICON="✅"
+else
+  STATUS_TEXT="fehlgeschlagen (Code $JOB_EXIT)"
+  STATUS_ICON="❌"
+fi
+
+echo "$STATUS_ICON $JOB_NAME $STATUS_TEXT in ${MIN}m${SEC}s"
+
+if [ "${VOICE_NOTIFY:-1}" != "0" ] && command -v talk &>/dev/null; then
+  talk "$JOB_NAME $STATUS_TEXT. Dauer: $MIN Minuten $SEC Sekunden."
+fi
+
+exit "$JOB_EXIT"