phsl / new-api

Add visual status indicators and improve user experience for the upstream ratio sync channel selector modal.

Features:
- Add status-based avatar indicators for channels (enabled/disabled/auto-disabled)
- Implement search functionality with text highlighting
- Add endpoint configuration input for each channel
- Optimize component structure with reusable ChannelInfo component

UI Improvements:
- Custom styling for transfer component items
- Hide scrollbars for cleaner appearance in transfer lists
- Responsive layout adjustments for channel information display
- Color-coded avatars: green (enabled), red (disabled), amber (auto-disabled), grey (unknown)

Code Quality:
- Extract channel status configuration to constants
- Create reusable ChannelInfo component to reduce code duplication
- Implement proper search filtering for both channel names and URLs
- Add consistent styling classes for transfer demo components

Files modified:
- web/src/components/settings/ChannelSelectorModal.js
- web/src/pages/Setting/Ratio/UpstreamRatioSync.js
- web/src/index.css

This enhancement provides better visual feedback for channel status and improves the overall user experience when selecting channels for ratio synchronization.