Interstellar Spaceship Robot Transformation Prompt

An enormous interstellar spaceship floats silently above Earth with glowing blue engines. Its kilometer-long hull separates into interlocking armor plates, enormous mechanical limbs emerge, and giant energy reactors ignite across its body. The ship's wings rotate into armored shoulders while its engines transform into glowing propulsion systems along its back. A colossal guardian robot unfolds against the planet, opens its radiant eyes, and slowly turns toward a distant alien fleet.