#### PR Dependency Tree
* **PR #14569** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
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## Summary by CodeRabbit
* **Chores**
* Upgraded development test tooling to Vitest v4 and added Playwright
browser test integration; normalized test configurations and CI shard
matrix.
* **Tests**
* Added a large suite of new integration tests covering editor flows
(edgeless, database, embeds, images, latex, code, clipboard,
multi-editor, presentation, undo/redo, etc.).
* Removed numerous end-to-end Playwright test suites across the same
feature areas.
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## Summary by CodeRabbit
- **New Features**
- Added new admin routes: "auth", "setup", and "notFound" for improved navigation and access within the admin interface.
- Introduced a utility for simplified and flexible lazy loading of React components with fallback support.
- **Improvements**
- Updated routing structure in the admin frontend for clearer route management and enhanced Sentry integration.
- Centralized route definitions for easier maintenance and consistency.
- Upgraded dependencies to support the latest React Router and React versions.
- Enhanced asynchronous handling in setup form navigation.
- **Chores**
- Updated project references and workspace dependencies for better package management.
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