graph TD A[Pre-designed birthday card layout template] --> B{Silo 1: Card Design Instructions} C[AI-generated image] --> B D[Slogan] --> B B -->|Card design description| E{Silo 2: Card Assembly} C --> E D --> E E -->|Assembled birthday card design| F{Silo 3: Output Management} F -->|Collected birthday card designs| G[Output Renderer ImageFinalizer subagent]