Simplify D&D combat turn extraction contract

internal/modules/dnd/extract/combatturns/assets/prompts/instructions.md

@@ -1,7 +1,6 @@
 Return the combat_turns array even when no combat turn is established. Return
-one or more actions for every turn. For turn_kind, use exactly one of: turn,
-reaction, legendary_action, lair_action, or other. For each action category,
-use exactly one of: attack, spell, movement, item, ability_check, saving_throw,
-condition, or other. Set round to null when the transcript does not state an
-explicit or unambiguous positive round number. Set resolution to null when the
-transcript establishes the declaration but not an immediate resolution.
+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.