refactor: claude status, command menu, and image viewer

- Refactored ClaudeStatus to TypeScript and moved it to the chat view subcomponents.
- Refactored CommandMenu to TypeScript, moved it to the chat view subcomponents
- Refactored ImageViewer to TypeScript and moved it to the file-tree view subcomponents.
- Moved FileTree to the file-tree view folder.

src/components/chat/view/subcomponents/ChatComposer.tsx

@@ -1,5 +1,5 @@
-import CommandMenu from '../../../CommandMenu';
-import ClaudeStatus from '../../../ClaudeStatus';
+import CommandMenu from './CommandMenu';
+import ClaudeStatus from './ClaudeStatus';
 import { MicButton } from '../../../MicButton.jsx';
 import ImageAttachment from './ImageAttachment';
 import PermissionRequestsBanner from './PermissionRequestsBanner';
@@ -151,7 +151,6 @@ export default function ChatComposer({
   onTranscript,
 }: ChatComposerProps) {
   const { t } = useTranslation('chat');
-  const AnyCommandMenu = CommandMenu as any;
   const textareaRect = textareaRef.current?.getBoundingClientRect();
   const commandMenuPosition = {
     top: textareaRect ? Math.max(16, textareaRect.top - 316) : 0,
@@ -266,7 +265,7 @@ export default function ChatComposer({
           </div>
         )}
 
-        <AnyCommandMenu
+        <CommandMenu
           commands={filteredCommands}
           selectedIndex={selectedCommandIndex}
           onSelect={onCommandSelect}