Telegram channel plugin: inbound messages not delivered to session

Description

Outbound messages (reply tool) work perfectly — messages sent from Claude Code arrive in Telegram. However, inbound messages from Telegram are never delivered to the Claude Code session.

Environment

• Claude Code: v2.1.80
• Plugin: telegram@claude-plugins-official v0.0.1
• OS: macOS (Darwin 25.3.0)
• Bot framework: grammy v1.21.0

Setup

• access.json correctly configured: dmPolicy: "allowlist", user ID in allowFrom
• Bot token valid and working
• Session started with claude --channels plugin:telegram@claude-plugins-official

What works

• Bot connects and starts polling (bot.start() succeeds, logs polling as @botname)
• Pairing flow works — initial pairing message was received and approved
• Outbound: reply tool sends messages to Telegram successfully
• Bot receives inbound messages (confirmed by ack reactions and typing indicators firing)

What does not work

• Inbound: Messages sent from Telegram to the bot never appear in the Claude Code session
• The mcp.notification({ method: "notifications/claude/channel", ... }) call in handleInbound() (server.ts:580) executes without error but the notification is not delivered to the Claude session
• Tested repeatedly with text messages — none arrived

Steps to reproduce

1. Install telegram plugin, configure bot token and pair a user
2. Start session: claude --channels plugin:telegram@claude-plugins-official
3. Send a message from Claude Code to Telegram using the reply tool (works)
4. Send a message from Telegram to Claude Code (never arrives)

Expected behavior

Messages sent from an allowlisted Telegram user should appear in the Claude Code session as <channel source="telegram" ...> blocks.

Actual behavior

Messages are silently dropped between the MCP notification and the Claude Code session. The bot processes them (gate passes, ack fires) but the session never receives them.