Expand description
Planner for CREATE ARRAY and DROP ARRAY.
Validation is engine-agnostic: name non-empty, dims non-empty, attrs
non-empty, tile_extents.len() == dims.len(), no duplicate dim/attr
names, and per-dim domain bounds are well formed (lo <= hi). The
schema-hash + the typed ArraySchema are computed in the Origin
converter where nodedb-array is available.