fix: gauge overlap, scroll trapping, and fan clipping

- Shrink gauge arc (r 80→65) to clearly separate from color band
- Replace overflow-hidden with overflow-clip on report preview,
  score spectrum, and marquee to prevent scroll trapping
- Remove overflow-x-clip from report fan so side pages aren't clipped

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/ui/web/src/components/marquee.tsx

@@ -46,7 +46,7 @@ export function Marquee({
     <div
       {...props}
       className={cn(
-        "group flex [gap:var(--gap)] overflow-hidden p-2 [--duration:40s] [--gap:1rem]",
+        "group flex [gap:var(--gap)] overflow-clip p-2 [--duration:40s] [--gap:1rem]",
         {
           "flex-row": !vertical,
           "flex-col": vertical,