Problem:
- Home folder could not expand (children_json was empty)
- UI tree view showed flat structure
Solution:
- Add step [5/5] to update children_json for all folders
- Use SQL: json_group_array(node_id) to collect child IDs
- Update 802 folders after node insertion
Performance:
- Children JSON update: 1.55s (74% of total time)
- Total scan time: 2.08s (vs 0.89s without children)
Result:
- Home folder has 805 children ✅
- Tree structure fully functional ✅
- API returns correct children array ✅
Files:
- src/scan.rs (added children_json update step)
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