feat: add nearby social interactions

scenes/ui/ChatUI.gd

@@ -125,6 +125,7 @@ var _send_failure_handled_by_ui: bool = false
 
 # 准备就绪
 func _ready() -> void:
+	add_to_group("whaletown_escape_dismissible")
 	_configure_mouse_focus()
 
 	# 初始隐藏聊天框
@@ -182,6 +183,8 @@ func _get_settings_manager() -> Node:
 
 # 处理全局输入
 func _input(event: InputEvent) -> void:
+	if get_viewport().is_input_handled():
+		return
 	if event is InputEventMouseButton:
 		_handle_global_mouse_button_input(event as InputEventMouseButton)
 		return
@@ -366,6 +369,15 @@ func hide_chat(immediate: bool = false) -> void:
 	_transition_tween.tween_property(chat_panel, "modulate:a", 0.0, CHAT_TRANSITION_DURATION)
 	_transition_tween.finished.connect(_on_hide_transition_finished)
 
+func is_escape_dismissible() -> bool:
+	return _is_chat_visible
+
+func get_escape_priority() -> int:
+	return 480
+
+func request_escape_close() -> void:
+	hide_chat()
+
 # 创建隐藏计时器
 func _create_hide_timer() -> void:
 	_hide_timer = Timer.new()