The modify/src/channels/whatsapp.ts patch in the add-voice-transcription skill was missing the registerChannel() call and its registry import. When the three-way merge ran, this caused the WhatsApp channel to silently skip registration on every service restart — messages were never received. Added the missing import and registerChannel factory with a creds.json guard, matching the pattern used by the add-whatsapp skill template. Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>