{"id":"de-facto-treenode-infra-efficient","text":"The TreeNode infrastructure (shared via inline copies across 400+ test files) provides both correct and efficient tree construction from level-order arrays.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["treenode-shared-definition-in-preorder","build-tree-level-order-convention","build-tree-level-order"],"outlist":["build-helper-uses-list-pop-zero"],"label":"Tree construction is correct but O(n^2) due to list.pop(0); replacing with deque.popleft() would validate this claim"}],"dependents":[],"metadata":{"last_reviewed":"2026-06-07T22:02:22","review_result":"unnecessary"},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"de-facto-treenode-infra-efficient","truth_value":"IN","reason":"SL justification valid","antecedents":["treenode-shared-definition-in-preorder","build-tree-level-order-convention","build-tree-level-order"],"label":"Tree construction is correct but O(n^2) due to list.pop(0); replacing with deque.popleft() would validate this claim","outlist":["build-helper-uses-list-pop-zero"]},{"node":"treenode-shared-definition-in-preorder","truth_value":"IN","reason":"premise"},{"node":"build-tree-level-order-convention","truth_value":"IN","reason":"premise"},{"node":"build-tree-level-order","truth_value":"IN","reason":"premise"}]}}