Bridge: allow fromMe messages in groups, include participant field in message queue, bind to 0.0.0.0 for network access, QR served as HTML. Adapter: process registered group messages (route to Claude), extract participant for user identification, fix unbound 'phone' variable. Tested end-to-end: WhatsApp group chat with Claude working. 442 tests pass. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>