Return the combat_turns array even when no combat turn is established. Return
actor, turn_kind, and source_refs for every record. For turn_kind, use exactly
one of: turn, reaction, legendary_action, lair_action, or other. Cite the
transcript ranges that establish both the actor and the combat event. Use the
players, party, and transcript context to map speakers to in-world actors. NPC
names may help disambiguate identity but do not replace transcript evidence.