* fix: channel affinity log styles
* fix: Issue with incorrect data storage when switching key sources
* feat: support not retrying after a single rule configuration fails
* fix: render channel affinity tooltip as multiline content
* feat: channel affinity cache hit
* fix: prevent ChannelAffinityUsageCacheModal infinite loading and hide data before fetch
* chore: format backend with gofmt and frontend with prettier/eslint autofix
- Add SSEViewer component for interactive SSE message inspection
* Display SSE data stream with collapsible panels
* Show parsed JSON with syntax highlighting
* Display key information badges (content, tokens, finish reason)
* Support copy individual or all SSE messages
* Show error messages with detailed information
- Support Ctrl+V to paste images in chat input
* Enable image paste in CustomInputRender component
* Auto-detect and add pasted images to image list
* Show toast notifications for paste results
- Add complete i18n support for 6 languages
* Chinese (zh): Complete translations
* English (en): Complete translations
* Japanese (ja): Add 28 new translations
* French (fr): Add 28 new translations
* Russian (ru): Add 28 new translations
* Vietnamese (vi): Add 32 new translations
- Update .gitignore to exclude data directory
