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- Server sets request_update=1 in ACK when host.plugin_data is empty - hbc: AsyncConnection.request_info_event; handle_ack sets it on request_update - hbc: _info_plugin_refresh_loop clears InfoPlugin caches and resends on demand - hbc_mini: same via _request_info event and _info_refresh_loop - docs/USERS.md: document client-declared owner config key - docs/PLUGIN_DEVELOPMENT.md: document server-initiated InfoPlugin refresh Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>