fix(a11y): label remaining unlabeled icon buttons across 12 components\n\nCo-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/features/room/message/MessageEditor.tsx

@@ -293,6 +293,8 @@ export const MessageEditor = as<'div', MessageEditorProps>(
                     size="300"
                     radii="300"
                     onClick={() => setToolbar(!toolbar)}
+                    aria-label={toolbar ? 'Hide formatting toolbar' : 'Show formatting toolbar'}
+                    aria-pressed={toolbar}
                   >
                     <Icon size="400" src={toolbar ? Icons.AlphabetUnderline : Icons.Alphabet} />
                   </IconButton>
@@ -322,7 +324,9 @@ export const MessageEditor = as<'div', MessageEditorProps>(
                         }
                       >
                         <IconButton
-                          aria-pressed={anchor !== undefined}
+                          aria-label="Insert emoji"
+                          aria-expanded={anchor !== undefined}
+                          aria-haspopup="dialog"
                           onClick={
                             ((evt) =>
                               setAnchor(