Hide the debug fly and level skip behind a 房★主★有★神★器★ easter-egg panel

cheat_panel replaces the level_skip autoload: a single small button in the top-right opens a panel holding the fly toggle and the level jump buttons, so nothing that looks like leftover debug UI is on screen. The fly is no longer gated behind OS.is_debug_build, so the easter egg works in exported builds too, and the 1/2/3 shortcuts only fire while the panel is open so they cannot be hit by accident. Space stays unbound and no gameplay content was touched.

scripts/player_controller.gd

@@ -357,7 +357,8 @@ func _build_throw_visuals() -> void:
 # ---------------------------------------------------------------- 测试用飞行
 
 func fly_available() -> bool:
-	return debug_fly and OS.is_debug_build()
+	# 这是藏在「房★主★有★神★器★」面板里的隐藏技能，正式版里也能用
+	return debug_fly
 
 
 func set_flying(on: bool) -> void:
@@ -368,10 +369,13 @@ func set_flying(on: bool) -> void:
 
 
 func handle_fly_movement() -> void:
-	# get_axis(负方向, 正方向)，屏幕坐标里 y 向下为正，所以空格(跳跃)要放在负方向
+	# 跳跃键已经停用了，所以调试飞行改用方向键上下（S 也保留作下降）来控制升降
+	var vertical := Input.get_axis("ui_up", "ui_down")
+	if is_zero_approx(vertical) and Input.is_action_pressed("squat"):
+		vertical = 1.0
 	var direction := Vector2(
 			Input.get_axis("move_left", "move_right"),
-			Input.get_axis("jump", "squat")
+			vertical
 	)
 	if direction == Vector2.ZERO:
 		velocity = Vector2.ZERO