Unordered does not mean duplicate-free
This route uses multiset semantics: object key order does not matter, array values nested inside an item still keep their order, and duplicates are counted rather than collapsed.
Each document is capped at 512 KiB, combined input at 1 MiB, traversal at 100,000 values and 100 levels, reports at 10,000 entries, and output at 1 MiB. Source and results stay in the active browser tab.