refactor(web): migrate feature screens to design tokens + radius token (#49)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/src/search/search-result-row.tsx

@@ -12,16 +12,16 @@ export function SearchResultRow({ hit }: { hit: SearchHitView }) {
       <NavLink
         to={`/search/${hit.id}`}
         className={({ isActive }) =>
-          `block border-b px-3 py-2 ${isActive ? "bg-indigo-50" : "hover:bg-neutral-50"}`
+          `block border-b px-3 py-2 ${isActive ? "bg-primary/10" : "hover:bg-muted"}`
         }
       >
         <div className="text-sm font-semibold">{hit.object_name}</div>
-        <div className="mt-0.5 flex items-center gap-2 text-xs text-neutral-500">
+        <div className="mt-0.5 flex items-center gap-2 text-xs text-muted-foreground">
           <span>{hit.object_number}</span>
           <VisibilityBadge visibility={hit.visibility} />
         </div>
         {hit.snippet && (
-          <p className="mt-1 line-clamp-2 text-xs text-neutral-600">
+          <p className="mt-1 line-clamp-2 text-xs text-muted-foreground">
             <Highlight text={hit.snippet} />
           </p>
         )}