Generate Ad Image Variations Using GPT-4, Dumpling AI & Google Drive

### 🖼️ Ad Image Variation Generator (Using GPT-4 + Dumpling AI)

This workflow creates 10 subtle creative variations of a reference ad image  
to test performance across visual styles, lighting, background, and tone —  
while preserving the product's framing and subject.

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### 🔧 How It Works

1. User submits brand name, website, and reference ad image via a form.
2. The image is uploaded to Google Drive.
3. GPT-4o analyzes the image’s visual style (composition, subject, lighting).
4. GPT-4 analyzes the brand website to understand overall visual identity.
5. A LangChain AI Agent uses both to generate 10 variation prompts.
6. Each prompt is passed to Dumpling AI to generate a new ad image.
7. All image URLs are logged in Google Sheets.