Bug

When a request fails and then succeeds on retry, Telegram receives only the error message but not the successful response. The GUI shows the correct response.

Steps to Reproduce

1. Send a message that causes initial context overflow
2. OpenClaw attempts retry (with fallback model or after compaction)
3. Retry succeeds

Expected Behavior

• Telegram receives the successful response
• Error message should either be suppressed (if retry will happen) or followed by the actual response

Actual Behavior

• Telegram receives: "Context overflow: prompt too large for the model..."
• Telegram does NOT receive the successful response
• GUI shows the successful response correctly

Evidence

Screenshots show:

• Telegram: only error message visible
• GUI: full response with session_status and explanation

Environment

• OpenClaw 2026.2.2-3
• Channel: Telegram
• Model: claude-opus-4-5-thinking via google-antigravity

Related

• Compaction always fails to generate summaries - falls back to static text #3479 (compaction failures)
• Thinking blocks without signature cause API rejection #8664 (thinking signature errors)

This may be related to how error notifications are sent before retry completion.