Initial commit — Station 0 vertical slice in progress

Includes full design documentation (ARCHITECTURE, DESIGN_NOTES, CONTENT_SPEC, PRODUCTION_NOTES)
and active Godot 4 / GDScript codebase. Core systems built: player, floor generation,
room system, enemy base, body part upgrades, run manager, save system, HUD, EventBus.

scenes/enemies/supervisor.tscn

@@ -0,0 +1,34 @@
+[gd_scene load_steps=5 format=3]
+
+[ext_resource type="Script" path="res://scripts/enemies/supervisor.gd" id="1"]
+
+[sub_resource type="CircleShape2D" id="1"]
+radius = 22.0
+
+[sub_resource type="CircleShape2D" id="2"]
+radius = 26.0
+
+[node name="Supervisor" type="CharacterBody2D"]
+collision_layer = 8
+collision_mask = 1
+script = ExtResource("1")
+
+[node name="Collision" type="CollisionShape2D" parent="."]
+shape = SubResource("1")
+
+[node name="Visual" type="Node2D" parent="."]
+
+[node name="Body" type="Polygon2D" parent="Visual"]
+polygon = PackedVector2Array(22, 0, 11, -19, -11, -19, -22, 0, -11, 19, 11, 19)
+color = Color(0.2, 0.25, 0.45, 1)
+
+[node name="Eye" type="Polygon2D" parent="Visual"]
+polygon = PackedVector2Array(12, -5, 22, -5, 22, 5, 12, 5)
+color = Color(1.0, 0.7, 0.1, 1)
+
+[node name="ContactArea" type="Area2D" parent="."]
+collision_layer = 0
+collision_mask = 2
+
+[node name="ContactCollision" type="CollisionShape2D" parent="ContactArea"]
+shape = SubResource("2")