Add enclosure support for podcast/media items

- Load enclosure fields in GetAllUnpublishedItems query
- Only include enclosure URL if it fits within post length limit
- Shorter video/audio enclosures will be included when they fit

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

crawler.go

@@ -372,7 +372,8 @@ func (c *Crawler) RefreshAllProfiles(publisher *Publisher, feedPassword string)
 func (c *Crawler) GetAllUnpublishedItems(limit int) ([]Item, error) {
 	rows, err := c.db.Query(`
 		SELECT i.id, i.feed_url, i.guid, i.title, i.link, i.description, i.content,
-		       i.author, i.pub_date, i.discovered_at, i.image_urls
+		       i.author, i.pub_date, i.discovered_at, i.image_urls,
+		       i.enclosure_url, i.enclosure_type, i.enclosure_length
 		FROM items i
 		JOIN feeds f ON i.feed_url = f.url
 		WHERE f.publish_status = 'pass'
@@ -391,9 +392,12 @@ func (c *Crawler) GetAllUnpublishedItems(limit int) ([]Item, error) {
 		var item Item
 		var guid, title, link, description, content, author, imageURLsJSON *string
 		var pubDate, discoveredAt *time.Time
+		var enclosureURL, enclosureType *string
+		var enclosureLength *int64
 
 		err := rows.Scan(&item.ID, &item.FeedURL, &guid, &title, &link, &description,
-			&content, &author, &pubDate, &discoveredAt, &imageURLsJSON)
+			&content, &author, &pubDate, &discoveredAt, &imageURLsJSON,
+			&enclosureURL, &enclosureType, &enclosureLength)
 		if err != nil {
 			continue
 		}
@@ -412,6 +416,17 @@ func (c *Crawler) GetAllUnpublishedItems(limit int) ([]Item, error) {
 			json.Unmarshal([]byte(*imageURLsJSON), &item.ImageURLs)
 		}
 
+		// Parse enclosure
+		if enclosureURL != nil && *enclosureURL != "" {
+			item.Enclosure = &Enclosure{
+				URL:  *enclosureURL,
+				Type: StringValue(enclosureType),
+			}
+			if enclosureLength != nil {
+				item.Enclosure.Length = *enclosureLength
+			}
+		}
+
 		items = append(items, item)
 	}