~anthropic/claude-sonnet-latest → B (60:40)

Side B fixes a concrete functional bug (Reddit child imports bypassing ensure_path and mislabeled unranked children) with a small, well-targeted change plus new test coverage validating the corrected behavior. Side A is a large, backward-incompatible DSL syntax rework (trailing to leading explanation blocks) that adds real parser complexity but the bulk of its diff is mechanical fixture/test reformatting rather than fixing a defect, making its net lasting value less clear-cut than B's targeted correctness fix.