- 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
- Add 'server-only' import to enforce server-side usage
- Implement cached problem queries with logging:
- Add getProblems/getCachedProblems for all problems
- Add getProblem/getCachedProblem for single problem by ID
- Use React cache and Next.js unstable_cache with tags
- Add detailed logging with timing metrics
- Simplify ProblemLayout to use children prop and remove ProblemStoreProvider
- Replace PlaygroundHeader with dedicated ProblemHeader component
- Streamline ProblemsetLayout with new ProblemsetHeader
- Remove deprecated BackButton in favor of NavigateBackButton
- Delete unused ProblemStoreProvider and related dependencies
- Remove old parallel route implementations (@Description and @Solutions)
- Add new feature-based components for problem description and solution
- Create content and panel components for both features
- Implement skeleton loading states
- Use cached data fetching
- Update MDX rendering and scroll area implementations
- Remove generic dockview store (`src/stores/dockview.tsx`)
- Add problem-specific dockview store (`src/stores/problem-dockview.tsx`)
- Remove submission-related state as it's no longer needed
- Changed --dv-tabs-and-actions-container-height from 44px to 36px
- Added align-items: center to .dv-tabs-container
- Improved CSS formatting for better readability
- Add PrimaryFeatures component with MobileFriendlyCard, DockerCard, and LSPCard.
- Update HomePage to include PrimaryFeatures component between MainView and FAQs.
- Add SubmissionLoginButton component for unauthenticated users
- Modify submissions page to check auth session
- Filter submissions by current user when logged in
