v0.8.7

New features:
- Added HTTP Basic Auth and API key authentication support
- Added offline mode: browse cached data without network connection
- Added workflow notes with Markdown support
- Added node groups with grid layout and renaming
- Added ComfyChair JSON workflow import/export
- Added initial drawing animation to workflow graphs

Improvements:
- Refined App Settings layout with organized sections
- Added helpful notes to built-in workflows
- Improved reconnection handling and per-server gallery caching

Bug fixes:
- Fixed workflow saving with multiple required field candidates
- Fixed Workflow Editor state persistence during theme changes
- Fixed JSON deserialization for node group restoration
