Changed

• Storage key prefix updated from $NS_ to $OS_ to align with the naming convention of OutSystems Client Variables in localStorage.

• Default mode token renamed from os-default to system-default to avoid ambiguity where OS could be interpreted as OutSystems instead of Operating System, and to improve clarity in Forge documentation.

Fixes:

• GetLayoutColorScheme and GetStoredLayoutColorScheme now always call ensureSeeded(), eliminating the possibility of a missing (null/undefined) stored preference when invoked before Initialize.
• Guarantee that the localStorage key is created (or in-memory fallback used) before any getter logic runs.