chore: prepare v4.0.0-beta.6

[susnux]

4.0.0-beta.6 - 2025-12-22

🐛 Fixed bugs

• fix(view): ensure all optional properties are validated #1438 (susnux)

Other changes

• chore: adjust types to only use interfaces if possible #1440 (susnux)
• ci: add workflow to check for Typescript issues #1439 (susnux)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.23%. Comparing base (ce0d836) to head (ddf0282).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1441   +/-   ##
=======================================
  Coverage   89.23%   89.23%           
=======================================
  Files          25       25           
  Lines         706      706           
  Branches      190      190           
=======================================
  Hits          630      630           
  Misses         63       63           
  Partials       13       13           

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