Ma77Ball opened a new issue, #5703:
URL: https://github.com/apache/texera/issues/5703
### Feature Summary
Workflow cards in the dashboard all share one default background image, so
there is no way to visually distinguish workflows at a glance. This adds an
optional per-workflow cover image that an owner can set or reset from the card,
stored on the backend so it syncs across browsers and devices for anyone with
access.
### Proposed Solution or Design
- Add a `workflow_cover_image(wid, image)` table (image stored as a
downscaled JPEG data URL, FK to `workflow` with `ON DELETE CASCADE`), plus a
`sql/updates` migration.
- Add access-gated `GET`/`PUT`/`DELETE /workflow/{wid}/cover` endpoints on
`WorkflowResource` (read access to fetch, write access to set/delete; data-URL
and size validation on set).
- Add a `WorkflowCoverService` that downscales/re-encodes the chosen file to
a small JPEG data URL before upload.
- Add hover controls on the workflow card (camera to pick an image, rollback
to reset to default), shown only to the owner in private search; `previewImage`
prefers the stored cover.
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