fix: ui papercuts (#292)

* fix: avatar showing blank when switching

* fix: sidebar padding glitchy

Long markdown content would make each chat row expand and remove the padding in the sidebar

* ignore emacs project.el

* nit

js/desktop/src/components/human-avatar.tsx

@@ -29,7 +29,7 @@ export function HumanAvatar({
   const url = useAvatarUrl(avatarObjectId);
   return (
     <Avatar {...props}>
-      {url && <AvatarImage src={url} alt={initials} />}
+      <AvatarImage src={url} alt={initials} />
       <AvatarFallback className={fallbackClassName}>{initials}</AvatarFallback>
     </Avatar>
   );