Fix case-study share chrome, hero lockup width, and copy confirmation in the share dialog.

Marketing pages omitted create-flow nav copy, so Share rendered as a translation key; the case-study banner squeezed hero text to the thumbnail width; Copy link had no hover or copied state.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/(marketing-case-study)/use-cases/[slug]/rule/_components/useUseCaseCompletedRuleActions.ts

@@ -34,7 +34,7 @@ export function useUseCaseCompletedRuleActions({
   const [duplicateBusy, setDuplicateBusy] = useState(false);
 
   const copyPageLink = useCallback(async () => {
-    if (typeof window === "undefined") return;
+    if (typeof window === "undefined") return false;
     try {
       await navigator.clipboard.writeText(window.location.href);
       setActionBanner({
@@ -43,6 +43,7 @@ export function useUseCaseCompletedRuleActions({
         title: t("shareLinkCopiedTitle"),
         description: t("shareLinkCopiedDescription"),
       });
+      return true;
     } catch {
       setActionBanner({
         key: "shareCopyFailed",
@@ -50,6 +51,7 @@ export function useUseCaseCompletedRuleActions({
         title: t("shareCopyFailedTitle"),
         description: t("shareCopyFailedDescription"),
       });
+      return false;
     }
   }, [setActionBanner, t]);