feat: Add scraper version selector to frontend

- Add version selector dropdown in scrape confirmation modal
- Default to v1.1.0 (Multi-Sort) which bypasses ~1000 review limit
- Pass scraper_version through API proxy to backend
- Update /new page fallback to show v1.1.0 as available
- Show version description explaining multi-sort benefits

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

web/app/new/page.tsx

@@ -134,12 +134,12 @@ export default function NewScrapePage() {
     } catch (err) {
       console.error('Failed to fetch scrapers:', err);
       setError('Failed to load available scrapers');
-      // Fallback to showing Google Reviews as available
+      // Fallback to showing Google Reviews as available with both versions
       setScrapers([{
         job_type: 'google-reviews',
         ...SCRAPER_METADATA['google-reviews'],
         available: true,
-        versions: ['v1.0.0'],
+        versions: ['v1.1.0 (Multi-Sort)', 'v1.0.0'],
       }]);
     } finally {
       setLoading(false);