Adds Seedance 2.0 reference-media constraints and forbids video data URLs; updates docs/decision-log and pitfalls to record the new rules. Introduces typed audio params (type: one-shot|loop, tempo: number|null), generator-specific placeholder styles/avoidance and UI changes for generation panels. Implements related front-end changes (new crop/ raster edit components, many image-editor models, tests and workflow hooks) and server-side contract/handler updates across api-server, shared-contracts, platform-audio, platform-image and vector_engine_audio_generation to support the new submission/asset flow and validations.
Remove backend-assembled raw Prompt and copy action from image info; render a lightweight generationInputs snapshot (user panel inputs + reference thumbnails) stored on canvas layers and shown in the image info dialog. Unify canvas display and info to use originalWidth/originalHeight (Resolution) instead of saved Size and hydrate legacy layout width/height only as fallback. Add model/aspectRatio/imageSize options for character/icon generation (frontend state, tests, and client payloads). Increase Axum JSON body limit for character animation endpoint to 12MB for compatibility and prefer submitting persisted objectKey over large Data URLs. Update tests, docs, and related server/frontend code to reflect these behaviors and validations.