Tune and optimize boss encounter

tests/_boss_planet_preview.gd

@@ -35,15 +35,18 @@ func _process(_delta: float) -> void:
 	var boss: Node2D = encounter.get_node("Boss")
 	boss.wave_timer = 999.0
 	boss.laser_timer = 999.0
-	boss.phase = boss.Phase.LASER_STORM
 	for i in range(3):
 		boss.eyes[i].open_eye()
 		boss.eyes_opened += 1
+		boss.eyes[i].take_damage(999)
+	# Show one of the remaining weak points in its attackable state while the
+	# aggregate bar truthfully sits at half health.
+	boss.open_next_eye()
 	boss.spawn_wave()
 	for minion in get_tree().get_nodes_in_group("boss_minions"):
 		minion.speed = 0.0
 		minion.acceleration = 0.0
 	boss.laser_charge_time = 999.0
 	boss.fire_laser_volley()
-	encounter._process(0.0)
+	encounter._refresh_status()
 	get_tree().paused = true