## Summary
Reverts #10849 (per-instance promoted widget value storage) and its
companion test-pinning PR #11697. The fix in #10849 caused regressions
in promoted-widget serialization (notably the Z-Image-Turbo template,
see #10146 follow-up). A replacement fix is being developed on
`fix/subgraph-promoted-widget-inline-state` and will land separately.
## Changes
- **Revert #11697** — drops the `it.fails`-marked tests that pin the
#10849 corruption symptom. With #10849 reverted, those markers would
falsely flip to passing.
- **Revert #10849** — removes per-instance `_instanceWidgetValues` map,
`_pendingWidgetsValues` configure-time hydration, the `widgets_values`
write path in `SubgraphNode.serialize()`, the `sourceSerialize` field on
`PromotedWidgetView`, the multi-instance Vitest suite, and the
multi-instance E2E test + asset.
- **Conflict resolution** in
`browser_tests/tests/subgraph/subgraphSerialization.spec.ts`: kept the
restored test coverage from #11579 (which is post-#10849 on main) and
removed only the now-unreachable multi-instance test, its helper, and
its workflow constant. Auto-merge with #11698 (`incrementVersion`) and
#11699 (ID type aliases) was clean.
## Review Focus
- Confirm no other on-main code path has come to depend on
`PromotedWidgetView.sourceSerialize` or
`SubgraphNode._instanceWidgetValues` since #10849 (grep is clean
locally).
- Confirm we want to land this revert before the replacement fix on
`fix/subgraph-promoted-widget-inline-state` is ready — this leaves the
original #10146 (multi-instance widget value collision) unfixed in the
meantime.
- The retained #11579 test coverage now exercises pre-#10849 behavior;
some of those assertions were written expecting the #10849 code path. CI
will surface any that need adjustment.
┆Issue is synchronized with this [Notion
page](https://app.notion.com/p/PR-11790-revert-roll-back-10849-11697-per-instance-promoted-widget-values-3536d73d3650814094abd58b6b712d8d)
by [Unito](https://www.unito.io)
73d4e24ffa