Generate high-quality images via Gemini models with structured prompts, aspect ratios, and brand validation.

• Supports multiple Gemini models (gemini-3-pro-image, gemini-2.5-flash-image, gemini-2.5-pro-image) optimized for different quality and speed tradeoffs
• Enforces structured prompt format covering subject, style, lighting, mood, composition, aspect ratio, and brand colors to ensure consistent outputs
• Includes validation workflows across multiple agents for prompt completeness, style consistency, and brand alignment before generation
• Generates 2-4 image variants per request with metadata tracking (prompts, model, ratio, timestamp) for reproducibility and iteration