feat: remove type icon from medium-sized bookmark cards

- Remove contentTypeIcon from CardViewProps interface
- Remove type icon display from bookmark footer
- Replace contentTypeIcon with faLink in thumbnail placeholder
- Simplify card interface by removing content type indicator
- Clean up unused icon-related code

src/components/BookmarkViews/CardView.tsx

@@ -1,7 +1,7 @@
 import React, { useState } from 'react'
 import { Link } from 'react-router-dom'
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
-import { IconDefinition } from '@fortawesome/fontawesome-svg-core'
+import { faLink } from '@fortawesome/free-solid-svg-icons'
 import { IndividualBookmark } from '../../types/bookmarks'
 import { formatDate, renderParsedContent } from '../../utils/bookmarkUtils'
 import RichContent from '../RichContent'
@@ -22,7 +22,6 @@ interface CardViewProps {
   articleImage?: string
   articleSummary?: string
   articleTitle?: string
-  contentTypeIcon: IconDefinition
   readingProgress?: number
 }
 
@@ -38,7 +37,6 @@ export const CardView: React.FC<CardViewProps> = ({
   articleImage,
   articleSummary,
   articleTitle,
-  contentTypeIcon,
   readingProgress
 }) => {
   const firstUrl = hasUrls ? extractedUrls[0] : null
@@ -124,7 +122,7 @@ export const CardView: React.FC<CardViewProps> = ({
               >
             {!cachedImage && firstUrl && (
               <div className="thumbnail-placeholder">
-                    <FontAwesomeIcon icon={contentTypeIcon} />
+                <FontAwesomeIcon icon={faLink} />
               </div>
             )}
               </div>
@@ -191,9 +189,6 @@ export const CardView: React.FC<CardViewProps> = ({
             ) : (
               <span className="bookmark-date">{formatDate(bookmark.created_at ?? bookmark.listUpdatedAt)}</span>
             )}
-            <span className="bookmark-type">
-              <FontAwesomeIcon icon={contentTypeIcon} className="content-type-icon" />
-            </span>
           </div>
         </div>
       </div>