Refresh UI components and showcase; release updated framework packages

examples/basic-app/app/styles/global.css

@@ -45,13 +45,7 @@ body {
     Roboto,
     sans-serif;
   color: var(--text);
-  /* Tinted from the primary token so the wash follows the theme too. */
-  background: radial-gradient(
-    1200px 600px at 50% -10%,
-    color-mix(in srgb, var(--wrn-color-primary) 18%, var(--bg)) 0%,
-    var(--bg) 60%
-  );
-  background-color: var(--bg);
+  background: var(--bg);
 }
 
 #app {