WIP checkpoint: PC2: Wire "Enter World" from the browse list to the playable level

scripts/player.gd

@@ -79,13 +79,11 @@ func _unhandled_input(event: InputEvent) -> void:
 			_update_input_direction(key)
 		elif not key.pressed:
 			_clear_input_direction(key)
-		# Release the mouse so the player can get back to a menu/cursor.
+		# Escape exits the level back to the world browse list, mirroring
+		# the Back button pattern already used in world_list.gd/main_menu.gd.
 		if key.pressed and key.keycode == KEY_ESCAPE:
 			Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
-	elif event is InputEventMouseButton and event.pressed:
-		# Clicking back into the viewport re-captures the mouse.
-		if Input.mouse_mode == Input.MOUSE_MODE_VISIBLE and DisplayServer.get_name() != "headless":
-			Input.mouse_mode = Input.MOUSE_MODE_CAPTURED
+			get_tree().change_scene_to_file("res://scenes/world_list.tscn")
 	elif event is InputEventMouseMotion and Input.mouse_mode == Input.MOUSE_MODE_CAPTURED:
 		_handle_mouse_look(event as InputEventMouseMotion)
 

scripts/world_list.gd

@@ -135,8 +135,23 @@ func _create_world_card(world_dict: Dictionary) -> Control:
 	meta_label.add_theme_font_size_override("font_size", 12)
 	meta_label.add_theme_color_override("font_color", Color(0.5, 0.5, 0.5, 1.0))
 
+	# PC2: the only thing a world actually loads into right now is the one
+	# shared playable test level (scenes/game.tscn) -- there's no per-world
+	# content yet, so "Enter" doesn't need the world's id for anything.
+	# Real per-world level loading is a later concern once worlds actually
+	# have their own content to load.
+	var enter_button := Button.new()
+	enter_button.text = "Enter World"
+	enter_button.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
+	enter_button.pressed.connect(_on_enter_world_pressed)
+
 	card.add_child(name_label)
 	card.add_child(desc_label)
 	card.add_child(meta_label)
+	card.add_child(enter_button)
 
 	return panel
+
+
+func _on_enter_world_pressed() -> void:
+	get_tree().change_scene_to_file("res://scenes/game.tscn")