Create one production-ready image asset for the StoryVault mobile app.
Persona: Captain Nova (space_adventure_captain).
Asset name: setting_moonbay.
Asset label for prompt context only: Moonbay.
Step: setting.
Usage: choice_icon.
Target size/aspect intent: 512x512.

Image description:
A friendly moon world with soft gray craters, tiny glowing houses, a blue bay, and a calm crescent glow.

Art direction:
- Style: premium children storybook, cinematic space adventure, soft 3D illustration, high contrast, cheerful, safe, magical
- Palette: deep navy, cosmic purple, electric blue, warm yellow, emerald green, coral red
- Lighting: soft glow, rim light, star sparkle highlights
- Character consistency: Captain Nova is a warm childlike astronaut guide with a round helmet, star headphones, blue-gold suit accents, and a friendly expression.
- Safety: No weapons, no frightening aliens, no realistic danger, no sharp horror elements.

Hard requirements:
- Do not include any readable text, letters, numbers, captions, logos, watermarks, labels, UI text, or signage inside the image.
- Use a transparent background if the image format supports alpha. If true alpha is not possible, use a clean plain dark navy background with the object fully isolated and centered.
- Keep the subject centered with comfortable padding for a rounded choice card.
- Use a kid-safe, cheerful expression and soft forms.
- Avoid horror, weapons, realistic danger, or aggressive expressions.
- Output a single image asset, not a collage or mock phone screenshot.