# Visual Preview

Visual preview extends the base diff for category changes and shows `before/after`.

## Preview data
- Product lists per category before and after position updates.
- SKU cards: `thumbnail`, `name`, `sku`, `price`, `special_price`, `position`.
- Badges: `moved`, `new`, `dropped`, `unchanged`.
- Summary: `moved_up`, `moved_down`, `new_in_topN`, `dropped_from_topN`.

## Storage
- `merch_plan_previews.preview_visual_json`.

## Export
- MVP includes a print-friendly preview page (browser print flow).