render hyperlink cards, when the link is not part of a sentence.

src/components/Note/AsciidocArticle/AsciidocArticle.tsx

@@ -703,26 +703,109 @@ export default function AsciidocArticle({
         })
         
         // Handle YouTube URLs and relay URLs in links
-        htmlString = htmlString.replace(/<a[^>]*href=["']([^"']+)["'][^>]*>(.*?)<\/a>/g, (match, href, linkText) => {
+        // Process all link matches first to determine which are standalone
+        const linkMatches: Array<{ match: string; href: string; linkText: string; index: number; isStandalone: boolean }> = []
+        const linkRegex = /<a[^>]*href=["']([^"']+)["'][^>]*>(.*?)<\/a>/g
+        let linkMatch
+        while ((linkMatch = linkRegex.exec(htmlString)) !== null) {
+          const match = linkMatch[0]
+          const href = linkMatch[1]
+          const linkText = linkMatch[2]
+          const index = linkMatch.index
+          
+          // Check if link is standalone (on its own line, not part of a sentence/list/quote)
+          let isStandalone = false
+          if (href.startsWith('http://') || href.startsWith('https://')) {
+            // Get context around the link
+            const beforeMatch = htmlString.substring(Math.max(0, index - 500), index)
+            const afterMatch = htmlString.substring(index + match.length, Math.min(htmlString.length, index + match.length + 500))
+            
+            // Extract the parent paragraph/div content
+            const paragraphMatch = beforeMatch.match(/<p[^>]*>([^<]*)$/)
+            const divMatch = beforeMatch.match(/<div[^>]*>([^<]*)$/)
+            
+            // If link is in a paragraph, check if paragraph contains only the link
+            if (paragraphMatch) {
+              const paragraphEnd = afterMatch.match(/^([^<]*)<\/p>/)
+              const paragraphContent = paragraphMatch[1] + linkText + (paragraphEnd?.[1] || '')
+              const trimmedContent = paragraphContent.trim()
+              // If paragraph contains only the link (possibly with whitespace), it's standalone
+              if (trimmedContent === linkText.trim() || trimmedContent === '') {
+                // Check if it's in a list or blockquote by looking further back
+                const contextBefore = htmlString.substring(Math.max(0, index - 1000), index)
+                if (!contextBefore.match(/<[uo]l[^>]*>/) && !contextBefore.match(/<blockquote[^>]*>/)) {
+                  isStandalone = true
+                }
+              }
+            }
+            
+            // If link is in a div and the div contains only the link, it's standalone
+            if (!isStandalone && divMatch) {
+              const divEnd = afterMatch.match(/^([^<]*)<\/div>/)
+              const divContent = divMatch[1] + linkText + (divEnd?.[1] || '')
+              const trimmedContent = divContent.trim()
+              if (trimmedContent === linkText.trim() || trimmedContent === '') {
+                const contextBefore = htmlString.substring(Math.max(0, index - 1000), index)
+                if (!contextBefore.match(/<[uo]l[^>]*>/) && !contextBefore.match(/<blockquote[^>]*>/)) {
+                  isStandalone = true
+                }
+              }
+            }
+            
+            // If link appears to be on its own line (surrounded by block-level tags or whitespace)
+            if (!isStandalone) {
+              const beforeTrimmed = beforeMatch.replace(/\s*$/, '')
+              const afterTrimmed = afterMatch.replace(/^\s*/, '')
+              if (
+                (beforeTrimmed.endsWith('</p>') || beforeTrimmed.endsWith('</div>') || beforeTrimmed.endsWith('<br') || beforeTrimmed === '') &&
+                (afterTrimmed.startsWith('</p>') || afterTrimmed.startsWith('</div>') || afterTrimmed.startsWith('<p') || afterTrimmed.startsWith('<div') || afterTrimmed === '')
+              ) {
+                const contextBefore = htmlString.substring(Math.max(0, index - 1000), index)
+                if (!contextBefore.match(/<[uo]l[^>]*>/) && !contextBefore.match(/<blockquote[^>]*>/)) {
+                  isStandalone = true
+                }
+              }
+            }
+          }
+          
+          linkMatches.push({ match, href, linkText, index, isStandalone })
+        }
+        
+        // Replace links in reverse order to preserve indices
+        for (let i = linkMatches.length - 1; i >= 0; i--) {
+          const { match, href, linkText, isStandalone } = linkMatches[i]
+          let replacement = match
+          
           // Check if the href is a YouTube URL
           if (isYouTubeUrl(href)) {
             const cleanedUrl = cleanUrl(href)
-            return `<div data-youtube-url="${cleanedUrl.replace(/"/g, '&quot;')}" class="youtube-placeholder my-2"></div>`
+            replacement = `<div data-youtube-url="${cleanedUrl.replace(/"/g, '&quot;')}" class="youtube-placeholder my-2"></div>`
           }
           // Check if the href is a relay URL
-          if (isWebsocketUrl(href)) {
+          else if (isWebsocketUrl(href)) {
             const relayPath = `/relays/${encodeURIComponent(href)}`
-            return `<a href="${relayPath}" class="inline text-green-600 dark:text-green-400 hover:text-green-700 dark:hover:text-green-300 hover:underline break-words cursor-pointer" data-relay-url="${href}" data-original-text="${linkText.replace(/"/g, '&quot;')}">${linkText}</a>`
+            replacement = `<a href="${relayPath}" class="inline text-green-600 dark:text-green-400 hover:text-green-700 dark:hover:text-green-300 hover:underline break-words cursor-pointer" data-relay-url="${href}" data-original-text="${linkText.replace(/"/g, '&quot;')}">${linkText}</a>`
           }
-          // For regular HTTP/HTTPS links, replace with WebPreview placeholder
+          // For regular HTTP/HTTPS links, check if standalone
-          if (href.startsWith('http://') || href.startsWith('https://')) {
+          else if (href.startsWith('http://') || href.startsWith('https://')) {
+            if (isStandalone) {
+              // Standalone link - render as WebPreview
               const cleanedUrl = cleanUrl(href)
-            return `<div data-webpreview-url="${cleanedUrl.replace(/"/g, '&quot;')}" class="webpreview-placeholder my-2"></div>`
+              replacement = `<div data-webpreview-url="${cleanedUrl.replace(/"/g, '&quot;')}" class="webpreview-placeholder my-2"></div>`
+            } else {
+              // Inline link - keep as regular link
+              const escapedLinkText = linkText.replace(/"/g, '&quot;')
+              replacement = `<a href="${href}" class="inline text-green-600 dark:text-green-400 hover:text-green-700 dark:hover:text-green-300 hover:underline break-words" target="_blank" rel="noopener noreferrer" data-original-text="${escapedLinkText}">${linkText}</a>`
             }
-          // For other links (like relative links), keep as-is
+          }
+          // For other links (like relative links), keep as-is but add data attribute
+          else {
             const escapedLinkText = linkText.replace(/"/g, '&quot;')
-          return match.replace(/<a/, `<a data-original-text="${escapedLinkText}"`)
+            replacement = match.replace(/<a/, `<a data-original-text="${escapedLinkText}"`)
-        })
+          }
+          
+          htmlString = htmlString.substring(0, linkMatches[i].index) + replacement + htmlString.substring(linkMatches[i].index + match.length)
+        }
         
         // Handle YouTube URLs in plain text (not in <a> tags)
         // Create a new regex instance to avoid state issues

src/components/Note/MarkdownArticle/MarkdownArticle.tsx

@@ -313,10 +313,48 @@ function parseMarkdownContent(
         const linkText = match[1]
         const hasImage = /^!\[/.test(linkText.trim())
         
+        // Check if link is standalone (on its own line, not part of a sentence/list/quote)
+        const isStandalone = (() => {
+          // Get the line containing this link
+          const lineStart = content.lastIndexOf('\n', start) + 1
+          const lineEnd = content.indexOf('\n', end)
+          const lineEndIndex = lineEnd === -1 ? content.length : lineEnd
+          const line = content.substring(lineStart, lineEndIndex)
+          
+          // Check if the line is just whitespace + the link (possibly with trailing whitespace)
+          const lineTrimmed = line.trim()
+          const linkMatch = lineTrimmed.match(/^\[([^\]]+)\]\(([^)]+)\)$/)
+          if (linkMatch) {
+            // Link is on its own line - check if it's in a list or blockquote
+            // Check if previous line starts with list marker or blockquote
+            const prevLineStart = content.lastIndexOf('\n', lineStart - 1) + 1
+            const prevLine = content.substring(prevLineStart, lineStart - 1).trim()
+            
+            // Not standalone if it's part of a list or blockquote
+            if (prevLine.match(/^[\*\-\+]\s/) || prevLine.match(/^\d+\.\s/) || prevLine.match(/^>\s/)) {
+              return false
+            }
+            
+            // Standalone if it's on its own line and not in a list/blockquote
+            return true
+          }
+          
+          // Not standalone if it's part of a sentence
+          return false
+        })()
+        
+        // Only render as WebPreview if it's a standalone HTTP/HTTPS link (not YouTube, not relay, not image link)
+        const url = match[2]
+        const shouldRenderAsWebPreview = isStandalone && 
+          !hasImage && 
+          !isYouTubeUrl(url) && 
+          !isWebsocketUrl(url) &&
+          (url.startsWith('http://') || url.startsWith('https://'))
+        
         linkPatterns.push({
           index: start,
           end: end,
-          type: hasImage ? 'markdown-image-link' : 'markdown-link',
+          type: hasImage ? 'markdown-image-link' : (shouldRenderAsWebPreview ? 'markdown-link-standalone' : 'markdown-link'),
           data: { text: match[1], url: match[2] }
         })
       }
@@ -545,6 +583,10 @@ function parseMarkdownContent(
     if (patternType === 'hashtag' || patternType === 'wikilink' || patternType === 'footnote-ref' || patternType === 'relay-url') {
       return true
     }
+    // Standalone links are block-level, not inline
+    if (patternType === 'markdown-link-standalone') {
+      return false
+    }
     if (patternType === 'markdown-link' && patternData) {
       const { url } = patternData
       // Markdown links are inline only if they're not YouTube or WebPreview
@@ -693,6 +735,14 @@ function parseMarkdownContent(
           </a>
         )
       }
+    } else if (pattern.type === 'markdown-link-standalone') {
+      const { url } = pattern.data
+      // Standalone links render as WebPreview (OpenGraph card)
+      parts.push(
+        <div key={`webpreview-${patternIdx}`} className="my-2">
+          <WebPreview url={url} className="w-full" />
+        </div>
+      )
     } else if (pattern.type === 'markdown-link') {
       const { text, url } = pattern.data
       // Markdown links should always be rendered as inline links, not block-level components

src/components/TrendingNotes/index.tsx

@@ -42,7 +42,7 @@ export default function TrendingNotes() {
   const [nostrLoading, setNostrLoading] = useState(false)
   const [nostrError, setNostrError] = useState<string | null>(null)
   const [showCount, setShowCount] = useState(SHOW_COUNT)
-  const [activeTab, setActiveTab] = useState<TrendingTab>('nostr')
+  const [activeTab, setActiveTab] = useState<TrendingTab>('relays')
   const [sortOrder, setSortOrder] = useState<SortOrder>('most-popular')
   const [hashtagFilter] = useState<HashtagFilter>('popular')
   const [selectedHashtag, setSelectedHashtag] = useState<string | null>(null)
@@ -51,8 +51,9 @@ export default function TrendingNotes() {
   const [cacheLoading, setCacheLoading] = useState(false)
   const bottomRef = useRef<HTMLDivElement>(null)
   const isFetchingNostrRef = useRef(false)
+  const hasUserClickedNostrTabRef = useRef(false)
 
-  // Load Nostr.band trending feed when tab is active
+  // Load Nostr.band trending feed only when user explicitly clicks the nostr tab
   useEffect(() => {
     const loadTrending = async () => {
       // Prevent concurrent fetches
@@ -81,7 +82,8 @@ export default function TrendingNotes() {
       }
     }
 
-    if (activeTab === 'nostr' && nostrEvents.length === 0 && !nostrLoading && !nostrError && !isFetchingNostrRef.current) {
+    // Only fetch if user has explicitly clicked the nostr tab AND it's currently active
+    if (activeTab === 'nostr' && hasUserClickedNostrTabRef.current && nostrEvents.length === 0 && !nostrLoading && !nostrError && !isFetchingNostrRef.current) {
       loadTrending()
     }
   }, [activeTab, nostrEvents.length, nostrLoading, nostrError])
@@ -606,7 +608,10 @@ export default function TrendingNotes() {
               hashtags
             </button>
             <button
-              onClick={() => setActiveTab('nostr')}
+              onClick={() => {
+                hasUserClickedNostrTabRef.current = true
+                setActiveTab('nostr')
+              }}
               className={`px-3 py-1 text-sm rounded-md transition-colors ${
                 activeTab === 'nostr'
                   ? 'bg-primary text-primary-foreground'