Introduces UnifiOsIntegration, orchestrating UnifiOsApi (local) and UnifiSmApi (optional cloud) to build the UnifiOsSummary. Local endpoint calls degrade independently via Promise.allSettled; the cloud client is never instantiated without a configured siteManagerApiKey secret. Registers the unifiOs kind in the integration creator, index, and types barrels, resolving the previously-failing typecheck. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>