feat(cockpit): replace procedural cockpit with twelve scripted models

Instance twelve Blender-scripted glTF models in the cockpit scene and
rebuild the cabin around them: gauge panel, sonar, switch panel, alert
box, speaker, porthole, hull wall, caged lamps, gas bottle, handrails
and side consoles. Presentation only; no domain, application or world
rule changes beyond enabling glow in the test environment.

- Needles, alert lamps and sonar screen are driven by the existing
  snapshots; the alert box now carries SYS/ATTN/ALRM.
- Depth dial reads percent of certified depth.
- Sonar display restyled as a turquoise holographic relief with a
  shader grid and height scale; SubViewport matches the glass (960x604).
- Cabin lighting retuned: warm pooled lamp light, cool porthole rim,
  lamp shadows, dial backlight.
- Procedural stand-ins removed (bulkhead, tanks, consoles, levers,
  indicator columns, placeholder pipe run, dial face PNGs).
- Tests adapted where nodes disappeared; one assertion removed
  (pipe_segment_count) until the pipe kit is placed.
- Model .glb files are committed without LFS; textures Godot extracts
  next to them at import are ignored.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

game/presentation/cockpit/cockpit_pressure_bulkhead.gd

@@ -1,192 +1,57 @@
 class_name CockpitPressureBulkhead
 extends Node3D
 
-const CockpitMaterialPalette = preload(
-	"res://game/presentation/cockpit/cockpit_material_palette.gd"
-)
-const CockpitMeshFactory = preload(
-	"res://game/presentation/cockpit/cockpit_mesh_factory.gd"
-)
+## Imported pressure hull (end cap, knuckle and barrel in one shell) and the
+## porthole bolted into it. Both models are instanced by `cockpit_interior.tscn`.
 
-const PANEL_COUNT := 1
-const FASTENER_COUNT := 16
-const ANGULAR_STEPS := 64
-const RADIAL_STEPS := 4
-const INNER_RADIUS := 0.72
-const OUTER_RADIUS := 1.11
+const WHITEBOX_NAMES: Array[String] = [
+	"LeftBulkhead",
+	"RightBulkhead",
+	"TopBulkhead",
+	"BottomBulkhead",
+]
 
-var _materials: CockpitMaterialPalette
-var _panel_count := 0
+var _hull_shells: Array[Node] = []
+var _porthole_frame: MeshInstance3D
+var _porthole_glass: MeshInstance3D
 
 
 func _ready() -> void:
-	_materials = CockpitMaterialPalette.new()
-	_hide_rectangular_whitebox()
-	_style_existing_frame()
-	_build_curved_panels()
-	_build_outer_rib()
-	_build_fasteners()
-	_build_clamp_plates()
+	var hull := get_node_or_null("HullWall")
+	if hull != null:
+		_hull_shells = hull.find_children("*", "MeshInstance3D", true, false)
+	_porthole_frame = _find_mesh("Porthole")
+	_porthole_glass = _find_mesh("PortholeGlass")
+	if _hull_shells.is_empty() or _porthole_frame == null or _porthole_glass == null:
+		push_error("Pressure hull or porthole model is missing a node")
+		return
+	_porthole_glass.cast_shadow = GeometryInstance3D.SHADOW_CASTING_SETTING_OFF
 
 
 func panel_count() -> int:
-	return _panel_count
+	return _hull_shells.size()
+
+
+func hull_shell() -> MeshInstance3D:
+	return null if _hull_shells.is_empty() else _hull_shells[0] as MeshInstance3D
+
+
+func porthole_frame() -> MeshInstance3D:
+	return _porthole_frame
+
+
+func porthole_glass() -> MeshInstance3D:
+	return _porthole_glass
 
 
 func rectangular_whitebox_is_hidden() -> bool:
-	for node_name: String in ["LeftBulkhead", "RightBulkhead", "TopBulkhead", "BottomBulkhead"]:
+	for node_name: String in WHITEBOX_NAMES:
 		var whitebox := get_parent().get_node_or_null(node_name) as MeshInstance3D
 		if whitebox != null and whitebox.visible:
 			return false
 	return true
 
 
-func _hide_rectangular_whitebox() -> void:
-	for node_name: String in ["LeftBulkhead", "RightBulkhead", "TopBulkhead", "BottomBulkhead"]:
-		var whitebox := get_parent().get_node_or_null(node_name) as MeshInstance3D
-		if whitebox != null:
-			whitebox.visible = false
-
-
-func _style_existing_frame() -> void:
-	var frame := get_parent().get_node_or_null("WindowFrame") as MeshInstance3D
-	if frame != null:
-		frame.material_override = _materials.brushed_steel
-	for child: Node in get_parent().get_children():
-		if child is MeshInstance3D and child.name.begins_with("Bolt"):
-			(child as MeshInstance3D).material_override = _materials.brass
-
-
-func _build_curved_panels() -> void:
-	var panel_angle := TAU / float(PANEL_COUNT)
-	for panel_index in PANEL_COUNT:
-		var start_angle := panel_index * panel_angle
-		var end_angle := (panel_index + 1) * panel_angle
-		var panel := MeshInstance3D.new()
-		panel.name = "PressurePanel%02d" % (panel_index + 1)
-		panel.mesh = _create_curved_panel_mesh(start_angle, end_angle)
-		panel.material_override = _materials.overhead_steel
-		panel.cast_shadow = GeometryInstance3D.SHADOW_CASTING_SETTING_ON
-		add_child(panel)
-		_panel_count += 1
-
-
-func _create_curved_panel_mesh(start_angle: float, end_angle: float) -> ArrayMesh:
-	var surface := SurfaceTool.new()
-	surface.begin(Mesh.PRIMITIVE_TRIANGLES)
-	for angular_index in ANGULAR_STEPS:
-		var angle_ratio_0 := float(angular_index) / float(ANGULAR_STEPS)
-		var angle_ratio_1 := float(angular_index + 1) / float(ANGULAR_STEPS)
-		var angle_0 := lerpf(start_angle, end_angle, angle_ratio_0)
-		var angle_1 := lerpf(start_angle, end_angle, angle_ratio_1)
-		for radial_index in RADIAL_STEPS:
-			var radial_ratio_0 := float(radial_index) / float(RADIAL_STEPS)
-			var radial_ratio_1 := float(radial_index + 1) / float(RADIAL_STEPS)
-			_add_panel_quad(
-				surface,
-				angle_0,
-				angle_1,
-				angle_ratio_0,
-				angle_ratio_1,
-				radial_ratio_0,
-				radial_ratio_1
-			)
-	surface.generate_normals()
-	return surface.commit()
-
-
-func _add_panel_quad(
-	surface: SurfaceTool,
-	angle_0: float,
-	angle_1: float,
-	angle_ratio_0: float,
-	angle_ratio_1: float,
-	radial_ratio_0: float,
-	radial_ratio_1: float
-) -> void:
-	_add_panel_vertex(surface, angle_0, angle_ratio_0, radial_ratio_0)
-	_add_panel_vertex(surface, angle_1, angle_ratio_1, radial_ratio_0)
-	_add_panel_vertex(surface, angle_0, angle_ratio_0, radial_ratio_1)
-	_add_panel_vertex(surface, angle_0, angle_ratio_0, radial_ratio_1)
-	_add_panel_vertex(surface, angle_1, angle_ratio_1, radial_ratio_0)
-	_add_panel_vertex(surface, angle_1, angle_ratio_1, radial_ratio_1)
-
-
-func _add_panel_vertex(
-	surface: SurfaceTool,
-	angle: float,
-	angle_ratio: float,
-	radial_ratio: float
-) -> void:
-	var radius := lerpf(INNER_RADIUS, OUTER_RADIUS, radial_ratio)
-	var convex_depth := sin(radial_ratio * PI) * 0.075
-	surface.set_uv(Vector2(angle_ratio, radial_ratio))
-	surface.add_vertex(
-		Vector3(cos(angle) * radius, sin(angle) * radius, 0.045 + convex_depth)
-	)
-
-
-func _build_outer_rib() -> void:
-	var rib := MeshInstance3D.new()
-	rib.name = "OuterPressureRib"
-	var torus := TorusMesh.new()
-	torus.inner_radius = 1.055
-	torus.outer_radius = 1.125
-	torus.rings = 64
-	torus.ring_segments = 12
-	rib.mesh = torus
-	rib.material_override = _materials.dark_steel
-	rib.rotation_degrees.x = 90.0
-	rib.position.z = 0.025
-	add_child(rib)
-	var inner_rib := MeshInstance3D.new()
-	inner_rib.name = "InnerPressureRib"
-	var inner_torus := TorusMesh.new()
-	inner_torus.inner_radius = 0.695
-	inner_torus.outer_radius = 0.755
-	inner_torus.rings = 64
-	inner_torus.ring_segments = 12
-	inner_rib.mesh = inner_torus
-	inner_rib.material_override = _materials.brushed_steel
-	inner_rib.rotation_degrees.x = 90.0
-	inner_rib.position.z = 0.075
-	add_child(inner_rib)
-
-
-func _build_fasteners() -> void:
-	for fastener_index in FASTENER_COUNT:
-		var angle := (fastener_index + 0.5) * TAU / float(FASTENER_COUNT)
-		var fastener_position := Vector3(
-			cos(angle) * 0.96,
-			sin(angle) * 0.96,
-			0.12
-		)
-		CockpitMeshFactory.add_cylinder(
-			"OuterFastener",
-			self,
-			fastener_position,
-			0.020,
-			0.018,
-			_materials.brass,
-			Vector3(90.0, 0.0, 0.0)
-		)
-		CockpitMeshFactory.add_sphere(
-			"FastenerCap",
-			self,
-			fastener_position + Vector3(0.0, 0.0, 0.012),
-			0.017,
-			_materials.brushed_steel
-		)
-
-
-func _build_clamp_plates() -> void:
-	for plate_index in 12:
-		var angle := (plate_index + 0.5) * TAU / 12.0
-		var plate := CockpitMeshFactory.add_box(
-			"PressureClamp",
-			self,
-			Vector3(cos(angle) * 0.88, sin(angle) * 0.88, 0.105),
-			Vector3(0.11, 0.055, 0.028),
-			_materials.brushed_steel
-		)
-		plate.rotation_degrees.z = rad_to_deg(angle) + 90.0
+func _find_mesh(mesh_name: String) -> MeshInstance3D:
+	var matches := find_children(mesh_name, "MeshInstance3D", true, false)
+	return null if matches.is_empty() else matches[0] as MeshInstance3D