- Add SyncEventsArgs to export sync events from the CLI - Wire
SyncCmd::Events and implement export_events to fetch - format and write
results - Implement JSON, SQL, and Markdown exporters - with optional
device data in the output - Extend protocol with EventLogRequest and
EventLogResponse - Enable LogSyncHandler to handle event log requests
and return logs - Expose log_handler from BackfillManager for event
logging - Update docs with CLI examples and protocol overview
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