Introduce centralized model pricing for editor generations: add EditorGenerationPricing types and admin API client methods (GET/POST), backend default config and runtime override support, and server route/handler changes to expose admin editor-generation-pricing. Add an AdminEditorGenerationPricingPage component, styles, route entry, icon, and tests, plus a test for admin routes. Update docs and decision log to describe the pricing contract and management workflow. This enables managing per-model pricing (perGeneration / perSecond, flat or tiered) from the admin panel and exposes runtime pricing to the main site.
Introduce a new UI design asset extraction flow: add POST /api/editor/ui-designs/assets/extractions handler that always uses gpt-image-2 with the fixed prompt "提取画面中的所有独立并整理成spritesheet"; parse Data URL references, call OpenAI image edits, return a spritesheet and sliced icon assets. Increase request body limit for image Data URLs and wire the route with bearer auth. Add platform-image slicing: slice_generated_icon_spritesheet_all_by_connected_components (with auto-naming "素材 1..N", foreground estimation and heuristics) and export it. Add Rust tests for the handler, prompt constant, and slicing behavior. Update frontend client and integration tests to call the new extractEditorUiDesignAssets API and verify spritesheet + icon layers are added to the canvas and persisted. Update multiple docs to describe the extraction UI, toolbar placement, and related audio/playback pitfalls. Minor related updates: toolbar button ordering and audio duration / signed read-url notes.