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9209badd37
## Summary Show live KSampler previews on active job cards/list items in the Assets sidebar, while preserving existing fallback behavior. ## Changes - **What**: - Added a prompt-scoped job preview store (`jobPreviewStore`) gated by `Comfy.Execution.PreviewMethod`. - Wired `b_preview_with_metadata` handling to map previews by `promptId`. - Extended queue job view model with `livePreviewUrl` and consumed it in both sidebar list and grid active job UIs. - Cleared prompt previews on execution reset. - Added ref-counted shared blob URL lifecycle utility (`objectUrlUtil`) and updated preview stores to retain/release shared URLs so each preview event creates one object URL. - Added/updated unit coverage in `useJobList.test.ts` for preview enable/disable mapping. ## Review Focus - Object URL lifecycle correctness across node previews and job previews (retain/release behavior). - Preview gating behavior when `Comfy.Execution.PreviewMethod` is `none`. - Active job UI fallback behavior (`livePreviewUrl` -> `iconImageUrl`). ## Screenshots (if applicable) <img width="808" height="614" alt="image" src="https://github.com/user-attachments/assets/37c66eb2-8c28-4eb4-bb86-5679cb77d740" /> <img width="775" height="345" alt="image" src="https://github.com/user-attachments/assets/aa420642-b0d4-4ae6-b94a-e7934b5df9d6" /> ┆Issue is synchronized with this [Notion page](https://www.notion.so/PR-8723-feat-add-KSampler-live-previews-to-assets-sidebar-jobs-3006d73d365081aeb81dd8279bf99f94) by [Unito](https://www.unito.io)