feat(design): glass surfaces by role, the static Badge, LinkButton, user pickers on the Combobox (E28 S3d1)

frontend/src/components/PlayerModal.tsx

@@ -64,6 +64,7 @@ import { useScrollFade } from "../lib/useScrollFade";
 import { Button } from "./ui/Button";
 import { IconButton } from "./ui/IconButton";
 import { Pressable } from "./ui/Pressable";
+import { SURFACE } from "./ui/surfaces";
 
 // Experiment (branch experiment/inline-player): play the video in-app via the
 // YouTube IFrame Player API (not a bare embed) so we can read playback position
@@ -592,7 +593,7 @@ export default function PlayerModal({
         <div
           ref={cardRef}
           tabIndex={-1}
-          className="glass-card relative flex-1 min-w-0 max-h-full overflow-y-auto rounded-2xl outline-hidden"
+          className={`${SURFACE.panel} relative flex-1 min-w-0 max-h-full overflow-y-auto outline-hidden`}
           onClick={(e) => e.stopPropagation()}
         >
           <div