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/(app)/create/hooks/useCompletedRuleShareExport.ts

@@ -96,7 +96,7 @@ export function useCompletedRuleShareExport({
 }: {
   setActionBanner: (_: CompletedFlowActionBanner | null) => void;
 }): {
-  copyPublishedRuleLink: () => Promise<void>;
+  copyPublishedRuleLink: () => Promise<boolean>;
   mailtoPublishedRule: () => void;
   sharePublishedRuleViaSignal: () => Promise<void>;
   sharePublishedRuleViaSlack: () => Promise<void>;
@@ -137,32 +137,34 @@ export function useCompletedRuleShareExport({
       url: string,
       banner?: () => void,
       options?: { suppressFailureWhenDocumentNotFocused?: boolean },
-    ) => {
+    ): Promise<boolean> => {
       try {
         await navigator.clipboard.writeText(url);
         (banner ?? bannerCopied)();
+        return true;
       } catch {
         if (
           options?.suppressFailureWhenDocumentNotFocused === true &&
           typeof window !== "undefined" &&
           shouldSkipShareClipboardFallback(window)
         ) {
-          return;
+          return true;
         }
         bannerCopyFailed();
+        return false;
       }
     },
     [bannerCopied, bannerCopyFailed],
   );
 
   const copyPublishedRuleLink = useCallback(async () => {
-    if (typeof window === "undefined") return;
+    if (typeof window === "undefined") return false;
     const ctx = resolvePublishedRuleShareContext(window);
     if (!ctx) {
       bannerNoRule();
-      return;
+      return false;
     }
-    await copyUrlToClipboard(ctx.url);
+    return copyUrlToClipboard(ctx.url);
   }, [bannerNoRule, copyUrlToClipboard]);
 
   const mailtoPublishedRule = useCallback(() => {