- 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)
- Add useModelsStore with 30s cache for model list to reduce API calls
- Refactor SystemPage to use cached models from store
- Shorten ConfigPage search placeholder to prevent text truncation