Patch v202510251620

Fix intermittent freezing and audio loss.

Use only one shade of blue to depict part selections in the editor to avoid confusion about what is selected.

Do not change the default pivot point of copied sub-assemblies to the last hovered-over part when holding ctrl as that behaviour was undocumented and confusing.

Simplify the copy-paste manual section.

Update Unity version for security patch.

Update FMOD and Rewired middleware.

French and Chinese translation fixes.