Slate v2 Op-family Thirtieth Slice

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

Goal

• Land the first honest range/current-selection liftNodes(...) cut for top-level wrapper-child spans.

Scope

• Keep exact Path lifting intact.
• Support:
  • exact Path
  • explicit Range
  • current selection when at is omitted
• For Range or current selection, lift intersected child blocks out of one top-level wrapper parent.
• Keep the slice to wrapper-child spans only.
• Avoid deeper arbitrary range lifting in this slice.

Phases

• Confirm the wrapper-child range-lift semantics and current structural seams
• Add focused failing tests for path/range/current-selection lifting
• Implement the smallest honest range-based liftNodes(...) follow-on
• Sync package/public docs
• Verify the touched package/docs