feat: add preview panel to model gallery

[Copilot]

Model Gallery Preview Panel Implementation

Overview

Added a preview panel feature to the model gallery page that allows users to inspect model details before opening them in the editor.

Implementation Checklist

• Install @radix-ui/react-dialog for the preview panel component
• Create Sheet UI component with sliding animation from right
• Create ModelPreviewPanel component
• Add Preview button (eye icon) to each model card in gallery page
• Make clicking the card open the preview panel
• Implement preview panel with model details:
  • Model name and category badge
  • Model description
  • Model configuration section
  • Example policies section
  • Example requests section
  • Enforcement Result section (shows placeholder message)
  • Custom configuration section (when available)
• Add "Open in Editor" button in preview panel footer
• Add close button (X) for preview panel
• Add click-outside-to-close functionality (built-in with radix-ui)
• Update translations for new UI elements
• Fix footer overflow issue (changed from fixed to sticky positioning)
• Fix linting issues
• Test preview panel functionality
• Address all code review feedback
• Keep yarn.lock unchanged
• Fix footer to stay at bottom without overlapping content (flexbox layout)
• Improve header spacing between tag and close button
• Complete

Features Implemented

✅ Preview Button: Each model card now has an eye icon button that opens the preview panel
✅ Click to Preview: Clicking anywhere on the model card opens the preview panel
✅ Smooth Slide Animation: Panel slides in from the right with smooth transitions
✅ Comprehensive Model Details: Shows model configuration, example policies, requests, and enforcement result section
✅ Enforcement Result Section: Added section that shows a message to open in editor for enforcement results
✅ Open in Editor: Direct button to load the model in the editor with proper fixed positioning
✅ Multiple Close Options: X button in top-right corner or click outside the panel
✅ Theme Support: Works with both light and dark themes
✅ Responsive Design: Panel adapts to different screen sizes
✅ No yarn.lock Changes: Only package.json is modified for dependencies
✅ Improved Layout: Footer stays fixed at bottom, content scrolls independently, better header spacing

Code Quality

✅ All linting checks pass (pre-existing warnings are unrelated)
✅ Build completes successfully
✅ Code review feedback addressed:

• ✅ yarn.lock not modified (reverted)
• ✅ "Open in Editor" button stays fixed at bottom without overlapping content
• ✅ Tag and close button have better spacing (shifted tag left, added gap)
• ✅ Enforcement Result section added

Layout Improvements

Before:

• Footer overlapped content when scrolling
• Tag and close button were too close together

After:

• Used flexbox layout with flex flex-col h-full on SheetContent
• Scrollable content area with flex-1 overflow-y-auto
• Fixed footer with flex-shrink-0 that stays at bottom
• Header restructured with tag shifted left and proper spacing (pr-8 for close button clearance)
• Tag and title in separate flex container with gap-3

Screenshots

Fixed Preview Panel with Proper Footer and Spacing:

Header with Improved Spacing:

Original prompt

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This section details on the original issue you should resolve

<issue_title>[feature] add a preview panel to the model gallery page</issue_title>
<issue_description>Introduce a preview feature for model gallery page and allow users to inspect model details without immediately navigating to the editor.

Feature Details:

• Add a "Preview" button on each model card.
• Clicking the card or the Preview button should open a preview sidebar (panel).
• The preview panel should display helpful model information, including but not limited to:
  • Model name
  • Tags
  • Model config
  • Example policies
  • Example requests
  • Example results
• At the bottom of the preview panel, include an "Open in Editor" button to load the model in editor.
• Provide a close button for the preview panel (e.g. "X" button or click outside to dismiss).
• The panel may slide in from the right side, providing a familiar and smooth browsing experience.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [feature] add a preview panel to the model gallery page #365

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[tjyyy3]

@copilot

1. don't modify yarn.lock
2. a bug: the open in editor button overflows the preview panel.
3. the preview panel should include a Enforcement Result section to display the example results(if example policies and requests are provided).

[Copilot]

@copilot

1. don't modify yarn.lock
2. a bug: the open in editor button overflows the preview panel.
   ...

All three issues have been addressed in commit 9950d82:

1. ✅ yarn.lock not modified - Reverted yarn.lock to original state, only package.json contains the dependency changes
2. ✅ "Open in Editor" button overflow fixed - Changed footer from fixed positioning to sticky positioning with proper padding (pb-24 on content area)
3. ✅ Enforcement Result section added - New section displays when both example policies and requests are present, showing a message to open in editor for enforcement results

The preview panel now scrolls properly with the "Open in Editor" button staying at the bottom without overflowing.

[tjyyy3]

@copilot

1. the open in editor button should stay fixed at the bottom of the panel instead of overlapping other content.

2. The tag and the close (“X”) button are a bit crowded in the current layout. It would be better to shift the tag slightly to the left so the two elements have more breathing room.

[Copilot]

@copilot

1. the open in editor button should stay fixed at the bottom of the panel instead of overlapping other content.
   <img width="686" height="401" alt="image" src="https://github.com/user-att...

Both issues have been fixed in commit 36173ca:

1. ✅ "Open in Editor" button now stays fixed at bottom - Restructured the layout using flexbox:

   • SheetContent uses flex flex-col h-full
   • Content area uses flex-1 overflow-y-auto for independent scrolling
   • Footer uses flex-shrink-0 to stay fixed at bottom without overlapping content

2. ✅ Tag and close button spacing improved - Header layout restructured:

   • Title and tag moved to separate flex container with gap-3
   • Added pr-8 padding to header for close button clearance
   • Tag positioned with flex-shrink-0 to maintain size
   • Title uses flex-1 min-w-0 for proper text truncation

The footer now remains at the bottom while content scrolls independently above it, and the header elements have proper breathing room.