Diagnose errors in CloudWatch log group '{log_group}' from the last {time_range_minutes} minutes.
Service: {service_display}

ORDER OF OPERATIONS:
1. Call `conversations_add_message` to start a thread in Slack.
2. Search error logs for {service_display}.
3. If logs found, search GitHub and diagnose.
4. Reply to the Slack thread with the result.

GitHub Context:
- Repository name: {repo}
- Repository owner: {owner}
- Repository ref: {ref}
- Search and inspect code in this repository only.

Slack Context:
- Channel ID: {channel_id}

DO NOT skip step 1. Start the thread before doing anything else.
