fix: 修复聊天系统编译错误

- 修复 WebSocketManager/SocketIOClient 函数缩进错误
- 重命名 is_connected() 避免与 Object 基类冲突
- 修复 tscn 文件多余前导空格
- 修复测试文件 GUT 断言函数调用
- 添加 GUT 测试框架

addons/gut/gui/RunResults.tscn

@@ -0,0 +1,109 @@
+[gd_scene load_steps=4 format=3 uid="uid://4gyyn12um08h"]
+
+[ext_resource type="Script" uid="uid://chnko3073tkcv" path="res://addons/gut/gui/RunResults.gd" id="1"]
+[ext_resource type="Texture2D" uid="uid://bvo0uao7deu0q" path="res://addons/gut/icon.png" id="2_1k8e0"]
+[ext_resource type="PackedScene" uid="uid://dls5r5f6157nq" path="res://addons/gut/gui/ResultsTree.tscn" id="2_o808v"]
+
+[node name="RunResults" type="Control"]
+custom_minimum_size = Vector2(345, 0)
+layout_mode = 3
+anchors_preset = 0
+offset_right = 709.0
+offset_bottom = 321.0
+script = ExtResource("1")
+
+[node name="VBox" type="VBoxContainer" parent="."]
+layout_mode = 0
+anchor_right = 1.0
+anchor_bottom = 1.0
+
+[node name="Toolbar" type="HBoxContainer" parent="VBox"]
+layout_mode = 2
+size_flags_horizontal = 0
+
+[node name="Expand" type="Button" parent="VBox/Toolbar"]
+visible = false
+layout_mode = 2
+icon = ExtResource("2_1k8e0")
+
+[node name="Collapse" type="Button" parent="VBox/Toolbar"]
+visible = false
+layout_mode = 2
+icon = ExtResource("2_1k8e0")
+
+[node name="Sep" type="ColorRect" parent="VBox/Toolbar"]
+visible = false
+custom_minimum_size = Vector2(2, 0)
+layout_mode = 2
+
+[node name="LblAll" type="Label" parent="VBox/Toolbar"]
+visible = false
+layout_mode = 2
+text = "All:"
+
+[node name="ExpandAll" type="Button" parent="VBox/Toolbar"]
+layout_mode = 2
+icon = ExtResource("2_1k8e0")
+
+[node name="CollapseAll" type="Button" parent="VBox/Toolbar"]
+layout_mode = 2
+icon = ExtResource("2_1k8e0")
+
+[node name="Sep2" type="ColorRect" parent="VBox/Toolbar"]
+custom_minimum_size = Vector2(2, 0)
+layout_mode = 2
+
+[node name="HidePassing" type="CheckBox" parent="VBox/Toolbar"]
+layout_mode = 2
+size_flags_horizontal = 4
+text = "Passing"
+
+[node name="Sep3" type="ColorRect" parent="VBox/Toolbar"]
+custom_minimum_size = Vector2(2, 0)
+layout_mode = 2
+
+[node name="LblSync" type="Label" parent="VBox/Toolbar"]
+layout_mode = 2
+text = "Sync:"
+
+[node name="ShowScript" type="Button" parent="VBox/Toolbar"]
+layout_mode = 2
+toggle_mode = true
+button_pressed = true
+icon = ExtResource("2_1k8e0")
+
+[node name="ScrollOutput" type="Button" parent="VBox/Toolbar"]
+layout_mode = 2
+toggle_mode = true
+button_pressed = true
+icon = ExtResource("2_1k8e0")
+
+[node name="Output" type="Panel" parent="VBox"]
+self_modulate = Color(1, 1, 1, 0.541176)
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+
+[node name="Scroll" type="ScrollContainer" parent="VBox/Output"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="Tree" parent="VBox/Output/Scroll" instance=ExtResource("2_o808v")]
+layout_mode = 2
+
+[node name="FontSampler" type="Label" parent="."]
+visible = false
+layout_mode = 0
+offset_right = 40.0
+offset_bottom = 14.0
+text = "000 of 000 passed"
+
+[connection signal="pressed" from="VBox/Toolbar/Expand" to="." method="_on_Expand_pressed"]
+[connection signal="pressed" from="VBox/Toolbar/Collapse" to="." method="_on_Collapse_pressed"]
+[connection signal="pressed" from="VBox/Toolbar/ExpandAll" to="." method="_on_ExpandAll_pressed"]
+[connection signal="pressed" from="VBox/Toolbar/CollapseAll" to="." method="_on_CollapseAll_pressed"]
+[connection signal="pressed" from="VBox/Toolbar/HidePassing" to="." method="_on_Hide_Passing_pressed"]