feat: move export/sync buttons to workbench and standardize styling

- Move Export and Sync buttons from header to workbench editor panel
- Position buttons in front of Toggle Terminal button
- Standardize button styling with consistent:
  * Accent colored background and white text
  * Same padding (px-3 py-1.5) and font size (text-xs)
  * Consistent border styling and hover states
- Fix font size conflicts by removing parent text-sm classes
- Clean up unused imports and fix prettier formatting
- Ensure dropdown items have consistent text-sm font size

Resolves button styling inconsistencies and improves UX

app/components/chat/chatExportAndImport/ExportChatButton.tsx

@@ -4,7 +4,7 @@ import { classNames } from '~/utils/classNames';
 
 export const ExportChatButton = ({ exportChat }: { exportChat?: () => void }) => {
   return (
-    <div className="flex border border-bolt-elements-borderColor rounded-md overflow-hidden mr-2 text-sm">
+    <div className="flex border border-bolt-elements-borderColor rounded-md overflow-hidden">
       <DropdownMenu.Root>
         <DropdownMenu.Trigger className="rounded-md items-center justify-center [&:is(:disabled,.disabled)]:cursor-not-allowed [&:is(:disabled,.disabled)]:opacity-60 px-3 py-1.5 text-xs bg-accent-500 text-white hover:text-bolt-elements-item-contentAccent [&:not(:disabled,.disabled)]:hover:bg-bolt-elements-button-primary-backgroundHover outline-accent-500 flex gap-1.7">
           Export