refactor: use GET tenders/recommend and improve tender title UX

Load the Recommended tab from GET /api/v1/tenders/recommend instead of the
AI POST flow with 503 fallback. Fix notification pagination offset, make
tender titles selectable across list and detail views, and ignore .cursor.

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

lib/views/tenders/widgets/tender_card.dart

@@ -198,7 +198,7 @@ class TenderCard extends StatelessWidget {
   }
 
   Widget _tenderTitle() {
-    return Text(
+    return SelectableText(
       tender.title ?? '',
       maxLines: isDesktop ? 2 : 4,
       style: TextStyle(