P08-03: 配置の通常操作受入

scenes/main/main.gd

@@ -2124,7 +2124,19 @@ func _preview_failure_message(report: Dictionary) -> String:
 	var codes_value: Variant = report.get(&"error_codes", [])
 	if codes_value is Array and not codes_value.is_empty():
 		var code := String(codes_value[0])
-		return "配置不可: %s" % PREVIEW_REASON_NAMES.get(code, code)
+		if PREVIEW_REASON_NAMES.has(code):
+			return "配置不可: %s" % PREVIEW_REASON_NAMES[code]
+		var code_reasons: Variant = report.get(&"reasons", [])
+		if code_reasons is Array and not code_reasons.is_empty():
+			var reason: Variant = code_reasons[0]
+			for candidate: Variant in code_reasons:
+				if candidate is Dictionary and String(candidate.get(&"code", "")) == code:
+					reason = candidate
+					break
+			if reason is Dictionary:
+				var message := String(reason.get(&"message", ""))
+				if not message.is_empty():
+					return "配置不可: %s" % message
 	var reasons_value: Variant = report.get(&"reasons", [])
 	if reasons_value is Array and not reasons_value.is_empty() and reasons_value[0] is Dictionary:
 		return "配置不可: %s" % String(reasons_value[0].get(&"message", "条件を満たしていません"))

scenes/main/world_preview.gd

@@ -202,6 +202,12 @@ func get_build_preview_report(cell: Variant = null) -> Dictionary:
 	var target: Variant = _hovered_cell if cell == null else cell
 	if build_definition == null or not target is Vector3i:
 		return INVALID_PREVIEW.duplicate(true)
+	if _runtime != null and _runtime.has_method(&"preview_build_facility"):
+		var result: Dictionary = _runtime.call(&"preview_build_facility", build_definition.id, Vector3i(target.x, target.y, layer_mode), build_rotation)
+		result[&"connection"] = _build_connection_report(
+			_cells_from_serialized(result.get(&"cells", [])),
+			Vector3i(target.x, target.y, layer_mode))
+		return result
 	var construction: Variant = _service(&"construction_service")
 	if construction != null and construction.has_method(&"validate_placement"):
 		var report: Variant = construction.call(