fix web performance

crates/person/src/person.rs

@@ -105,7 +105,21 @@ impl Person {
 
     /// Get profile avatar
     pub fn avatar(&self) -> SharedString {
-        self.metadata()
+        // On web, the browser blocks cross-origin image fetches unless the
+        // picture host sends CORS headers, so remote avatars can never load
+        // there. Each doomed fetch still triggers a full-window repaint when
+        // it fails, which is very costly on wasm's single main thread when a
+        // list renders many avatars at once. Fall back to the bundled avatar
+        // for remote pictures on web.
+        #[cfg(target_arch = "wasm32")]
+        if let Some(picture) = self.metadata.picture.as_ref()
+            && !picture.is_empty()
+            && url::Url::parse(picture).is_ok_and(|url| matches!(url.scheme(), "http" | "https"))
+        {
+            return "brand/avatar.png".into();
+        }
+
+        self.metadata
             .picture
             .as_ref()
             .filter(|picture| !picture.is_empty())
@@ -115,13 +129,13 @@ impl Person {
 
     /// Get profile name
     pub fn name(&self) -> SharedString {
-        if let Some(display_name) = self.metadata().display_name.as_ref()
+        if let Some(display_name) = self.metadata.display_name.as_ref()
             && !display_name.is_empty()
         {
             return SharedString::from(display_name.trim());
         }
 
-        if let Some(name) = self.metadata().name.as_ref()
+        if let Some(name) = self.metadata.name.as_ref()
             && !name.is_empty()
         {
             return SharedString::from(name.trim());