Initial commit: Transcience MVP

Top-down twin-stick bullet-hell, Godot 4.7, server-authoritative dedicated
server with client-side prediction. Clients send input only; the server
resolves every hit for both players and enemies (no PvP).

- SimWorld: whole simulation as plain RefCounted objects (no nodes, no
  physics server), ~0.24ms/tick at peak load -- runs headless for free and
  drives 78 tests in under a second
- BulletPool: struct-of-arrays bullet storage, replicated as spawn/despawn
  events rather than per-tick state
- Emitter framework (Ring/AimedSpread/WallGap/ArcSweep) shared by trash
  enemies and bosses -- a new boss is data in src/content/content.gd, no
  simulation changes
- The Warden of the Fold: stationary 4-phase boss built entirely on that
  format
- Lobby hub with a portal into on-demand dungeon instances; one process
  hosts the hub plus every concurrent dungeon
- Emergency escape: 3s server-owned channel, cancelled by damage
- tools/check.sh, test.sh (GUT), smoke.sh (real server + bot clients over
  ENet), bench.gd; git hooks wired to the same scripts
- docs/ARCHITECTURE.md, NETCODE.md, WORKFLOW.md, ROADMAP.md

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"]