feat(readme): revert to screenshot for now

Author: ItzCrazyKns

README.md

@@ -10,7 +10,7 @@
 
 Perplexica is a **privacy-focused AI answering engine** that runs entirely on your own hardware. It combines knowledge from the vast internet with support for **local LLMs** (Ollama) and cloud providers (OpenAI, Claude, Groq), delivering accurate answers with **cited sources** while keeping your searches completely private.
 
-![preview](.assets/demo.gif)
+![preview](.assets/perplexica-screenshot.png)
 
 Want to know more about its architecture and how it works? You can read it [here](https://github.com/ItzCrazyKns/Perplexica/tree/master/docs/architecture/README.md).