Telegram channel DMs not waking idle session without @mention

Description

When using the official Telegram channel plugin (claude-plugins-official/external_plugins/telegram), DM messages from an allowlisted user do not reliably wake an idle Claude Code session. Messages only seem to be processed when the user includes an @botusername mention.

Expected behavior

DMs from allowlisted users should wake the session and be processed regardless of whether the message contains an @mention. The @mention requirement should only apply to group chats with requireMention: true.

Observed behavior

• Messages with @botusername → consistently delivered and processed
• Messages without @botusername → often sit unprocessed until the next interaction or @mention

Analysis

The Telegram MCP server's gate logic correctly delivers all DMs from allowlisted users (no mention check for chatType === 'private' — see server.ts line 223-224). The MCP notification is sent via notifications/claude/channel. The issue appears to be at the Claude Code runtime level — inbound MCP channel notifications may not trigger a new turn when the session is idle.

Environment

• Claude Code: 2.1.97
• Telegram plugin: v0.0.4 (claude-plugins-official)
• Platform: macOS (Darwin 24.6.0)
• DM policy: pairing, user is on allowFrom list

Reproduction

1. Set up Telegram channel plugin with an allowlisted user
2. Let the Claude Code session go idle (no active turn)
3. Send a DM without @mention → message is not processed
4. Send a DM with @mention → message is processed immediately