This change replaces a broad set of libconfig lookup() calls with indexed setting access across configuration, actions, gestures, and device feature parsing. The goal is to avoid API incompatibilities in older libconfig versions that are still common on enterprise distributions like RHEL/CentOS 7, without changing the expected config schema or behavior. In practice, the project should now build and parse configs more reliably on older Linux environments with less patching or distro-specific workarounds.