refactor(feed): build the prose view count where it's used

It sat above the one-line row's early return but only textBlock consumes
it, so every compact row allocated it and threw it away — the same shape
I'd already fixed for textBlock and meta, crept back. Also merges a
rationale comment I'd written twice.

frontend/src/components/VideoCard.tsx

@@ -352,13 +352,10 @@ function VideoCard({
   // line here rather than let the mode silently lose them.
   const noThumb = !spec.thumb;
   // Each datum on its own, so the one-line row can give each a column of its own while the stacked
-  // layouts still run them together as one sentence.
+  // layouts still run them together as one sentence. The count comes in two shapes from one span —
-  // Two shapes for the count: the stacked layouts read it as prose ("1.5K views · 2 min ago"), so
+  // one span so the exact-count tooltip covers all of whatever is rendered: prose needs the word
-  // they need the word; the row's column doesn't — a table doesn't repeat its unit on every line,
+  // ("1.5K views · 2 min ago"), the row's column doesn't, because a table doesn't repeat its unit
-  // and the tooltip has the exact figure anyway. Same tooltip either way.
+  // on every line and the tooltip carries the figure regardless.
-  // One span either way, so the exact-count tooltip covers all of whatever is rendered: the stacked
-  // layouts read it as prose and need the word, the row's column doesn't — a table doesn't repeat
-  // its unit on every line.
   const viewsCell = (withWord: boolean) =>
     video.view_count != null && (
       <span title={`${video.view_count.toLocaleString()} ${t("card.views")}`}>
@@ -366,7 +363,6 @@ function VideoCard({
         {withWord && ` ${t("card.views")}`}
       </span>
     );
-  const views = viewsCell(true);
   const published = (
     <>
       {relativeTime(video.published_at)}
@@ -497,6 +493,7 @@ function VideoCard({
   // Everything below is a STACKED layout — the card and the thumbnailed row. Only they run the
   // data together as one sentence; the one-line row above gives each datum its own column and has
   // already returned, so building this for it would be waste dressed up as shared code.
+  const views = viewsCell(true);
   const textBlock = (
     <>
       {title}