## Summary
Fix connection links rendering at wrong positions when nodes are
collapsed in Vue nodes mode.
## Changes
- **What**: Fall back to `clientPosToCanvasPos` for collapsed node slot
positioning since DOM-relative scale derivation is invalid when layout
store preserves expanded size. Clear stale `cachedOffset` on collapse
and defer sync when canvas is not yet initialized.
- 3 unit tests for collapsed node slot sync fallback
(clientPosToCanvasPos, cachedOffset clearing, canvas-not-initialized
deferral)
- 3 E2E tests for collapsed node link positions (within bounds, after
position change, after expand recovery)
## Review Focus
- `clientPosToCanvasPos` fallback is safe for collapsed nodes because
collapse is user-initiated (no loading-time transform desync risk that
#9121 originally fixed)
- `cachedOffset` clearing prevents stale expanded-state offsets during
collapsed node drag
- Regression from #9121 (DOM-relative scale) combined with #9680
(collapsed node ResizeObserver skip)
## Screenshots
Before
<img width="1030" height="434" alt="image"
src="https://github.com/user-attachments/assets/2f8b8a1f-ed22-4588-ab62-72b89880e53f"
/>
After
<img width="1029" height="476" alt="image"
src="https://github.com/user-attachments/assets/52dbbf7c-61ed-465b-ae19-a9781513e7e8"
/>
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10641-fix-collapsed-node-connection-link-positions-3316d73d365081f4aee3fecb92c83b91)
by [Unito](https://www.unito.io)
---------
Co-authored-by: Alexander Brown <drjkl@comfy.org>
Co-authored-by: Alexander Brown <DrJKL0424@gmail.com>
