Add branch-aware camp conversations

scripts/core/battle_state.gd

@@ -257,6 +257,10 @@ func _normalized_camp_conversations(source) -> Array:
 	for entry in source:
 		if typeof(entry) != TYPE_DICTIONARY:
 			continue
+		if entry.has("campaign_flags"):
+			var required_flags = entry.get("campaign_flags", {})
+			if typeof(required_flags) != TYPE_DICTIONARY or not _campaign_flags_match(required_flags):
+				continue
 		var conversation_id := str(entry.get("id", "")).strip_edges()
 		if conversation_id.is_empty() or seen.has(conversation_id):
 			continue