- Add page title (h1) to all main pages for consistent hierarchy
- Wrap page content in container/content div structure
- Handle 404 error for unsupported OAuth excluded models API
- Add cache price input field in usage page model pricing
- Add upgrade required i18n messages for older CPA versions
- Import mixins in page-level SCSS modules
- Add cache price field to ModelPrice interface
- Support both cached_tokens and cache_tokens fields for compatibility
- Separate prompt, cache, and completion pricing in cost calculation
- Deduct cached tokens from input tokens before prompt pricing
- Refactor getApiStats/getModelStats to reuse calculateCost function
- Update i18n labels for model pricing
- 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
