fix: isolate shared admin styling

src/components/theme-vars.test.ts

@@ -23,6 +23,8 @@ describe("themePaletteCss", () => {
       "--admin-accent", "--admin-accent-foreground", "--admin-overlay",
       "--admin-focus-ring", "--admin-success", "--admin-warning",
       "--admin-error", "--admin-info",
+      "--admin-success-subtle", "--admin-warning-subtle",
+      "--admin-error-border", "--admin-info-foreground",
     ]) expect(css).toContain(variable);
   });
 });