## Summary
- Move the ActionHeader component from TitleBar into PreviewPanel where
it logically belongs
- Improve component organization by separating preview-related controls
from the global title bar
- Update ActionHeader styling to fit its new location with sidebar
background

## Test plan
- Verify the ActionHeader appears at the top of the PreviewPanel instead
of in the title bar
- Confirm the tab switching (Preview/Code/Console) functionality works
correctly
- Test the refresh and external link buttons work as expected
- Verify the title bar still renders correctly with the spacer element

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Moved the preview action header into the PreviewPanel and added a right
action sidebar for quick mode switching. Maintenance actions moved to a
TitleBar “More” menu so controls are closer to their content.

- New Features
- RightActionSidebar on the chat page with buttons for Preview, Problems
(with count), Code, Configure, Security, Publish.
- TitleBar actions: Chat activity button and a “More” menu for Clean
Rebuild and Clear Preview Data.

- Refactors
- Render ActionHeader at the top of PreviewPanel; remove it from
TitleBar, drop useLocation, and add a spacer.
- Polish styles for ActionHeader (px-2, sidebar background) and sidebar
active/hover states.

<sup>Written for commit 5cc7c53453f280024838a43fdd89a357abca3523.
Summary will update on new commits.</sup>

<!-- End of auto-generated description by cubic. -->

---------
Co-authored-by: Will Chen <willchen90@gmail.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>