Description

Every assistant response is delivered twice to Telegram. The session log shows a single outbound message, so the duplication is happening in the delivery layer, not in the agent.

Steps to Reproduce

1. Run any agent session over Telegram (direct chat)
2. Send a message and receive a response
3. The same response appears twice in Telegram

Expected Behavior

Each assistant response is delivered once.

Actual Behavior

Each assistant response is delivered twice (exact duplicate, back-to-back).

Environment

• Channel: Telegram
• Agent: main session (direct chat)
• OpenClaw version: v2026.2.24

Additional Context

• Verified the session JSONL log — only one assistant message entry per turn
• The agent is not using the message tool (which could cause double-send if NO_REPLY is missed)
• Duplication is consistent, not intermittent
• Delivery queue at ~/.openclaw/delivery-queue/ shows no relevant retries for these messages

This points to the Telegram outbound dispatch layer sending the message twice, possibly a retry on an ACK timeout that doesn't check for prior successful delivery.