- 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
- Ran: bun run eslint:fix && bun run lint:fix
- Inserted AGPL license header via eslint-plugin-header
- Enforced no-multiple-empty-lines and other lint rules
- Formatted code using Prettier v3 (@so1ve/prettier-config)
- No functional changes; formatting-only baseline across JS/JSX files
- Rename React components/pages/utilities that contain JSX to `.jsx` across `web/src`
- Update import paths and re-exports to match new `.jsx` extensions
- Fix Vite entry by switching `web/index.html` from `/src/index.js` to `/src/index.jsx`
- Verified remaining `.js` files are plain JS (hooks/helpers/constants) and do not require JSX
- No runtime behavior changes; extension and reference alignment only
Context: Resolves the Vite pre-transform error caused by the stale `/src/index.js` entry after migrating to `.jsx`.
