feat: v1.2.0-rc.2 - Media display fixes and feed enhancements

## Added
- Feed Media Enhancement with Media RSS namespace support
  - RSS enclosure, media:content, media:thumbnail elements
  - JSON Feed image field for first image
- ADR-059: Full feed media standardization roadmap

## Fixed
- Media display on homepage (was only showing on note pages)
- Responsive image sizing with CSS constraints
- Caption display (now alt text only, not visible)
- Logging correlation ID crash in non-request contexts

## Documentation
- Feed media design documents and implementation reports
- Media display fixes design and validation reports
- Updated ROADMAP with v1.3.0/v1.4.0 media plans

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

starpunk/feeds/json_feed.py

@@ -259,6 +259,12 @@ def _build_item_object(site_url: str, note: Note) -> Dict[str, Any]:
     # Add title
     item["title"] = note.title
 
+    # Add image field (URL of first/main image) - per JSON Feed 1.1 spec
+    # Per Q7: Field should be absent (not null) when no media
+    if hasattr(note, 'media') and note.media:
+        first_media = note.media[0]
+        item["image"] = f"{site_url}/media/{first_media['path']}"
+
     # Add content (HTML or text)
     # Per Q24: Include media as HTML in content_html
     if note.html: