0.27.0-beta.6

fix(core): version guard (#15226)

fix #15225



#### PR Dependency Tree


* **PR #15226** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

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## Summary by CodeRabbit

* **Bug Fixes**
  * Improved self-hosted server version validation.
  * Correctly supports compatible beta and release-candidate versions.
  * Rejects outdated pre-release versions consistently.
* Provides the appropriate unsupported-version guidance when
compatibility requirements are not met.

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