Skill Stack Thumbnail Generator Generate on-brand thumbnails for Skill Stack blog posts using Google's Gemini API. Brand Identity Skill Stack is a curated repository of SKILL.md files for content creators. The aesthetic is: - Clean and minimal - Anthropic-adjacent sophistication - Paper/document metaphor - Skills as stackable knowledge artifacts - Terracotta accent - Single warm pop of color - Editorial quality - Think publishing meets productivity Logo Reference The logo is 4 stacked paper documents: - 3 gray layers (light → medium → darker) - 1 terracotta top layer with folded corner - Warm…