merge: M-3迭代7魔法道具内容+元进度数值标定 T0-T8全落——AuxItemTable六行+掉落投放(解锁门控空集零投放)+库存四步受理+三选一奖励节点+HUD两步交互+叠加层呈现+工坊封存呈现+换算率复核读数(6/9/1 vs 实测1.7/4.1/0.0 U1呈报);重闸全绿(冒烟577/0+五探针+单测12套+doc三闸熵增零新增+机检11/11+MC剥additive 0/400逐位);出口=T9目检(检查单已交);台账259-263

# Conflicts:
#	game/presentation/views/node_overlay.gd

game/presentation/views/node_overlay.gd

@@ -6,9 +6,11 @@ class_name NodeOverlay
 extends Control
 
 signal continue_pressed
+signal item_chosen(item_id: String)             # 迭代 7 T5——奖励节点三选一兑付（拍板②丙：奖励屏=小构筑点）
 
 var _label: Label
 var _btn: Button
+var _choice_box: HBoxContainer                  # 道具三选一按钮区（show_reward_items 时呈现）
 
 
 func _init() -> void:
@@ -28,6 +30,10 @@ func _init() -> void:
 	box.add_child(_label)
 	_btn = UiKit.button("继续")
 	_btn.pressed.connect(_emit_continue_pressed)
+	_choice_box = HBoxContainer.new()
+	_choice_box.add_theme_constant_override("separation", 12)
+	_choice_box.alignment = BoxContainer.ALIGNMENT_CENTER
+	box.add_child(_choice_box)
 	box.add_child(_btn)
 	visible = false
 
@@ -46,6 +52,12 @@ func show_rest(healed: int, hp_after: int, max_hp: int) -> void:
 	visible = true
 
 
+# 选择完成收屏（组合根在 item_chosen 处理毕调——入库存+确认后回选路由同拍）
+func close_reward() -> void:
+	_choice_box.visible = false
+	_btn.visible = true
+	visible = false
+
 # 探针复用：以真实按钮路径触发继续
 func press_continue() -> void:
 	_btn.pressed.emit()