feat: SEO improvements and image optimization

- Enhanced SEO service with meta tags and structured data
- Updated sitemap service and robots.txt
- Optimized listing components for better SEO
- Compressed images (saved ~31MB total)
- Added .gitattributes to enforce LF line endings

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

.gitattributes

@@ -0,0 +1,4 @@
+* text=auto eol=lf
+*.png binary
+*.jpg binary
+*.jpeg binary