{"id":"build-tree-is-shared-infra","text":"`TreeNode` and `build_tree` defined in `sum-of-root-to-leaf-binary-numbers/solution.py` are imported by hundreds of test files across the repository, making that file load-bearing shared infrastructure despite being a solution file.","truth_value":"IN","source":"entries/2026/06/06/sum-of-root-to-leaf-binary-numbers-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"build-tree-is-shared-infra","truth_value":"IN","reason":"premise"}]}}