Slate v2 Op-family Twenty-ninth Slice

Supporting plan. For current queue and roadmap truth, see master-roadmap.md.

Goal

• Land the first honest range-based unwrapNodes(...) cut for top-level wrapper block spans.

Scope

• Keep exact Path unwrapping intact.
• Support:
  • exact Path
  • explicit Range
  • current selection when at is omitted
• For Range or current selection, unwrap intersected top-level wrapper blocks.
• Keep the slice to top-level wrappers whose direct children are elements.
• Avoid mixed-inline partial-range unwrapping in this slice.

Phases

• Confirm the top-level range-unwrap semantics and current structural seams
• Add focused failing tests for path/range/current-selection unwrapping
• Implement the smallest honest range-based unwrapNodes(...) follow-on
• Sync package/public docs
• Verify the touched package/docs