debug: add debug logs to trace NIP-19 parsing and profile resolution

- Add logs to useProfileLabels hook
- Add logs to useMarkdownToHTML hook
- Add logs to RichContent component
- Add logs to extractNostrUris function
- Add error handling with fallbacks

src/hooks/useProfileLabels.ts

@@ -12,14 +12,31 @@ const { getPubkeyFromDecodeResult, encodeDecodeResult } = Helpers
 export function useProfileLabels(content: string): Map<string, string> {
   // Extract profile pointers (npub and nprofile) using applesauce helpers
   const profileData = useMemo(() => {
-    const pointers = getContentPointers(content)
-    return pointers
-      .filter(p => p.type === 'npub' || p.type === 'nprofile')
-      .map(pointer => ({
-        pubkey: getPubkeyFromDecodeResult(pointer),
-        encoded: encodeDecodeResult(pointer)
-      }))
-      .filter(p => p.pubkey)
+    console.log('[useProfileLabels] Processing content, length:', content?.length || 0)
+    try {
+      const pointers = getContentPointers(content)
+      console.log('[useProfileLabels] Found pointers:', pointers.length, 'types:', pointers.map(p => p.type))
+      const filtered = pointers.filter(p => p.type === 'npub' || p.type === 'nprofile')
+      console.log('[useProfileLabels] Profile pointers:', filtered.length)
+      const result = filtered
+        .map(pointer => {
+          try {
+            return {
+              pubkey: getPubkeyFromDecodeResult(pointer),
+              encoded: encodeDecodeResult(pointer)
+            }
+          } catch (err) {
+            console.error('[useProfileLabels] Error processing pointer:', err, pointer)
+            return null
+          }
+        })
+        .filter((p): p is { pubkey: string; encoded: string } => p !== null && !!p.pubkey)
+      console.log('[useProfileLabels] Profile data after filtering:', result.length)
+      return result
+    } catch (err) {
+      console.error('[useProfileLabels] Error extracting pointers:', err)
+      return []
+    }
   }, [content])
 
   // Fetch profiles for all found pubkeys (progressive loading)
@@ -30,15 +47,18 @@ export function useProfileLabels(content: string): Map<string, string> {
   // Build profile labels map that updates reactively as profiles load
   return useMemo(() => {
     const labels = new Map<string, string>()
+    console.log('[useProfileLabels] Building labels map, profileData:', profileData.length, 'profiles:', profiles.length)
     profileData.forEach(({ encoded }, index) => {
       const profile = profiles[index]
       if (profile) {
         const displayName = profile.name || profile.display_name || profile.nip05
         if (displayName) {
           labels.set(encoded, `@${displayName}`)
+          console.log('[useProfileLabels] Set label:', encoded, '->', displayName)
         }
       }
     })
+    console.log('[useProfileLabels] Final labels map size:', labels.size)
     return labels
   }, [profileData, profiles])
 }