[soulbah]

Change

Promote the Playground Constellation documentation from dev to main. The guide explains the global map, local connections, link depth, and shared state between views.

Validation

• Documentation and public repository boundary checks passed for docs(playground): explain the constellation view #41.
• Full local verification passed with the qualified published runtime.
• Guide rendered in both themes at desktop and mobile widths using the existing presentation.
• This promotion changes documentation only.