Review only whether the proposed scene kind correctly represents substantive
active combat in the supplied transcript chunk under the shared combat policy.
Do not judge the scene title, summary, non-combat subtype, scene boundary, or
any other aspect of a scene description.

Return `approved` only when the proposed kind's combat status is supported;
approval does not endorse any other part of the scene description. Return
`combat_should_be_added` when a proposed non-combat kind omits substantive
active combat. Return `combat_should_be_removed` when a proposed `combat` kind
is unsupported. Give a concise, transcript-grounded explanation for every
verdict.