- Use platformId directly as thread ID in deliver() and setTyping() instead of calling encodeThreadId with Discord-shaped args — platformId is already in the adapter's encoded format (e.g. "telegram:6037840640") - Add triggerTyping() in delivery.ts, call from router on message route - Enable Telegram channel in barrel - Verified E2E: Telegram message in → agent → typing indicator → response Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>