Tighten the flashlight spot and refresh captures

Narrow the spot to 11° with a 20 m range so it lights the person/door rather
than the whole facade, and regenerate the staged screenshots. Headless 227/227,
compare 11 good / 0 bad.

src/game/game_manager.gd

@@ -190,10 +190,10 @@ func _build_guard() -> GuardController:
 	# Aim straight ahead: tilting it down made the cone hit the ground right in
 	# front of the guard instead of the person or door being checked.
 	flashlight.rotation_degrees = Vector3.ZERO
-	flashlight.spot_range = 16.0
+	flashlight.spot_range = 20.0
-	flashlight.spot_angle = 20.0
+	flashlight.spot_angle = 11.0
-	flashlight.light_energy = 4.0
+	flashlight.light_energy = 3.6
-	flashlight.spot_attenuation = 0.8
+	flashlight.spot_attenuation = 0.9
 	flashlight.spot_angle_attenuation = 0.9
 	# Visible beam: a fading additive cone parented to the lamp, because the
 	# Compatibility renderer has no volumetric light. It is offset forward so the
@@ -201,7 +201,7 @@ func _build_guard() -> GuardController:
 	var beam := MeshInstance3D.new()
 	beam.name = "Beam"
 	var cone := CylinderMesh.new()
-	cone.top_radius = 1.35
+	cone.top_radius = 3.0
 	cone.bottom_radius = 0.04
 	cone.height = 7.0
 	cone.radial_segments = 16