- Changed all toolbar action components from named exports with curly braces to default exports
- Simplified ResetButton by moving template logic to useProblemEditorActions hook
- Updated useProblemEditorActions to handle template selection internally using store data
- Renamed problem-editor-store import to problem-editor for consistency
- Remove old language selector from `src/components/features/playground/workspace/editor/components`
- Add new implementation in `src/features/problems/code/components/toolbar/controls`
- Update toolbar exports to include the new selector
- Moved all editor action buttons (copy, format, undo, redo, reset) from `src/components/features/playground/workspace/editor/components/` to new location `src/features/problems/code/components/toolbar/actions/`
- Introduced shared `TooltipButton` component to reduce duplication
- Created centralized `useProblemEditorActions` hook for common editor operations
- Updated imports and exports through new index file
- Maintained all existing functionality while improving code organization
