Webhook retry failure logs for agent-bot now include the event payload,
making it easier to identify which event failed when debugging transient
upstream errors (429/500).
Previously the log only showed:
`[AgentBots::WebhookJob] attempt 1 failed
RestClient::InternalServerError`
Now it includes the payload:
`[AgentBots::WebhookJob] attempt 1 failed
RestClient::InternalServerError payload={"event":"message_created",...}`
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>