~anthropic/claude-sonnet-latest → B (6:4)

Side B fixes a real functional bug (Reddit children imports bypassing ensure_path and showing raw IDs instead of titles), threading tree context through several call sites and updating integration tests to verify the fix. Side A tightens validation constraints (0:0 handling, max 100) which is useful but more incremental/policy-level, with much of its diff being test churn and message-text changes rather than new behavior.