fix#14433
#### PR Dependency Tree
* **PR #14442** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
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## Summary by CodeRabbit
* **New Features**
* Level-of-detail thumbnails for large images.
* Adaptive pacing for snapping, distribution and other alignment work.
* RAF coalescer utility to batch high-frequency updates.
* Operation timing utility to measure synchronous work.
* **Improvements**
* Batch group/ungroup reparenting that preserves element order and
selection.
* Coalesced panning and drag updates to reduce jitter.
* Connector/group indexing for more reliable updates, deletions and
sync.
* Throttled viewport refresh behavior.
* **Documentation**
* Docs added for RAF coalescer and measureOperation.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
fix#14296fix#14289
#### PR Dependency Tree
* **PR #14315** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved inline editor stability for selection edge cases and
beforeinput handling, with better recovery and native-input protection.
* Fixed potential crashes when deleting with selections outside the
editor bounds, including Firefox-specific scenarios.
* **Tests**
* Added unit tests covering beforeinput behavior and added Firefox
end-to-end regression tests.
* **Chores**
* Reduced CI test parallelism to streamline pipeline.
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DarkSky