- Add 409 conflict handling for duplicate iFlow config files
- Add key creation hint in cookie login section
- Move extra actions button after delete button for consistency
- Improve OAuth status badge display logic (hide when idle)
- Add config toggle enable/disable i18n translations
- Adjust item-actions spacing from sm to md
- Add ampcodeApi service for upstream URL, API key, and model mappings management
- Implement Ampcode configuration modal in AiProvidersPage
- Add complete i18n translations for Ampcode features (en and zh-CN)
- Enhance UsagePage with mobile-responsive chart improvements and legend display
- Optimize chart rendering for smaller screens
- Improve page layout styles (SystemPage, AiProvidersPage alignment)
- Remove inset box-shadow from stat badges for cleaner appearance
- Add modelCountLabel style for consistent model count display
- Refactor model count layout in AiProvidersPage
- Add openaiTestButton style for proper button height alignment
- Add item-actions flexbox utility style to layout.scss
- Add excludedModels field to ProviderKeyConfig type for Codex and Claude providers
- Add excluded models textarea input in Codex/Claude edit modal
- Display excluded models badges in Codex and Claude provider cards
- Fix header connection status badge vertical alignment with IP address
- Update dark theme to use pure black color scheme
