~anthropic/claude-sonnet-latest → A (3:1)

Side A fixes real application behavior (correct sibling-grouping logic for unranked items) and adds a targeted regression test validating the new grouping semantics. Side B is a useful but narrow CI/test-config simplification (collapsing two enumerated kaocha suites into one glob-based suite) with no logic or test coverage changes, and even introduces a stray indentation inconsistency in the edn file.