fix: hide stats columns on mobile to prevent horizontal overflow

Stats row (size, files, seeders, leechers, date) uses fixed widths that
overflow on small screens. Hidden below sm breakpoint on both /dht and
/search pages. Name + source badge still visible on mobile.

Author: ralyodio

src/app/dht/page.tsx

@@ -174,7 +174,7 @@ const DhtResultsList = memo(function DhtResultsList({
           </div>
 
           {/* Stats */}
-          <div className="flex items-center gap-4 text-xs text-text-muted shrink-0">
+          <div className="hidden sm:flex items-center gap-4 text-xs text-text-muted shrink-0">
             <span className="w-16 text-right">{formatBytes(result.size)}</span>
             {result.files_count > 0 && (
               <span className="w-12 text-right">{result.files_count} files</span>

src/app/search/page.tsx

@@ -221,8 +221,8 @@ const SearchResultsList = memo(function SearchResultsList({
                 </span> : null}
             </div>
 
-            {/* Stats - compact */}
-            <div className="flex items-center gap-4 text-xs text-text-muted shrink-0">
+            {/* Stats - compact, hidden on very small screens */}
+            <div className="hidden sm:flex items-center gap-4 text-xs text-text-muted shrink-0">
               <span className="w-16 text-right">{formatBytes(result.torrent_total_size)}</span>
               <span className="w-12 text-right">{result.torrent_file_count} files</span>
               {result.torrent_seeders !== null && (