Function server_capabilities 

async fn server_capabilities(
    db: &Arc<RusqliteService>,
    server_id: &str,
) -> ServerCapabilities

Read the server’s reported version and resolve it into capabilities.

Never fails: a server row that is missing, or carries a version this build cannot parse, yields the conservative generation rather than an error. A client that refused to start because it did not recognise a version string would be the exact failure UR-085 exists to remove.

TRACES: UR-085 | IR-035, DR-280