Topic: Follow the range scan code path to see how it walks the leaf chain using next_sibling, which is the actual use of the sibling links

Date: 2026-05-29

Time: 10:52

The observations only show the first 200 lines of btree.py (which is 612 lines total), so I'm missing the rangescan implementation at line 486 and the end of deserialize_leaf. Let me work with what we have and note what's missing.