Is not compatible with Drupal 11

Possible I'm misunderstanding the intent here, but there are big mismatches from the library definitions in Stable library-overrides, and the base definitions of those libraries.

This and the lack of activity for the past 2 years lead me to believe this theme is not actually "compatible" with Drupal 11. Yes, it can be installed and enabled, but the promised features do not actually work.

For example, here's Stable's library-override for system/base, with 22 overrides:

  system/base:
    css:
      component:
        css/components/ajax-progress.module.css: css/core/components/ajax-progress.module.css
        css/components/align.module.css: css/system/components/align.module.css
        css/components/autocomplete-loading.module.css: css/core/components/autocomplete-loading.module.css
        css/components/fieldgroup.module.css: css/system/components/fieldgroup.module.css
        css/components/container-inline.module.css: css/system/components/container-inline.module.css
        css/components/clearfix.module.css: css/system/components/clearfix.module.css
        css/components/details.module.css: css/system/components/details.module.css
        css/components/hidden.module.css: css/system/components/hidden.module.css
        css/components/item-list.module.css: css/system/components/item-list.module.css
        css/components/js.module.css: css/system/components/js.module.css
        css/components/nowrap.module.css: css/system/components/nowrap.module.css
        css/components/position-container.module.css: css/system/components/position-container.module.css
        css/components/progress.module.css: css/core/components/progress.module.css
        css/components/reset-appearance.module.css: css/system/components/reset-appearance.module.css
        css/components/resize.module.css: css/system/components/resize.module.css
        css/components/sticky-header.module.css: css/core/components/sticky-header.module.css
        css/components/system-status-counter.css: css/system/components/system-status-counter.css
        css/components/system-status-report-counters.css: css/system/components/system-status-report-counters.css
        css/components/system-status-report-general-info.css: css/system/components/system-status-report-general-info.css
        css/components/tabledrag.module.css: css/core/components/tabledrag.module.css
        css/components/tablesort.module.css: css/system/components/tablesort.module.css
        css/components/tree-child.module.css: css/core/components/tree-child.module.css

And here's the definition of system/base with only 5 files:

base:
  version: VERSION
  css:
    component:
      css/components/align.module.css: { weight: -10 }
      css/components/container-inline.module.css: { weight: -10 }
      css/components/clearfix.module.css: { weight: -10 }
      css/components/hidden.module.css: { weight: -10 }
      css/components/js.module.css: { weight: -10 }

Nearly all of the overridden stylesheets have been moved, but Stable has not been updated to reflect this.