Hide dashboard cards and suppress live logs in health log deep-link view
When navigating to a specific log file via ?log= param, hide the vitals,
observe, and other dashboard cards so only the log viewer is shown. Also
guard renderLogs() with a deepLinkMode flag to prevent incoming websocket
events from overwriting the displayed log content.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>