Function getArchetypeAssets

getArchetypeAssets(
    archetype: PlayerArchetype,
): {
    id: string;
    image: string;
    name_english: string;
    name_korean: string;
    textureKey: string;
    theme: string;
    themeId: string;
}
Get archetype asset paths (image, theme music, etc.)

Note: PlayerArchetype enum values are already lowercase (e.g., MUSA = "musa"), so the toLowerCase() call is defensive programming for type safety.
Parameters
- archetype: PlayerArchetype
Returns {
    id: string;
    image: string;
    name_english: string;
    name_korean: string;
    textureKey: string;
    theme: string;
    themeId: string;
}
- Defined in utils/playerUtils.ts:311