Add profile README for public page

profile/README.md

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+<p align="center">
+  <img src="cartsnitch-logo.png" alt="CartSnitch" width="400" />
+</p>
+
+<div align="center">
+
+![GitHub Org stars](https://img.shields.io/github/stars/cartsnitch)
+![GitHub followers](https://img.shields.io/github/followers/cartsnitch)
+![License](https://img.shields.io/github/license/cartsnitch/.github)
+![Profile views](https://komarev.com/ghpvc/?username=cartsnitch&color=brightgreen)
+
+</div>
+
+<h3 align="center">Your vigilant shopping companion.</h3>
+
+<p align="center">
+  <a href="#">Documentation</a>
+  ·
+  <a href="https://github.com/cartsnitch/.github/issues">Report an Issue</a>
+  ·
+  <a href="#">Contributing</a>
+</p>
+
+---
+
+## Overview
+
+CartSnitch is a modern, TypeScript-powered tool for monitoring and tracking shopping carts, price changes, and availability across multiple retailers.
+
+## Tech Stack
+
+| Category | Technologies |
+|----------|-------------|
+| Language | TypeScript |
+| Runtime | Node.js |
+| Testing | Vitest, Playwright |
+| Infrastructure | Docker, Kubernetes |
+
+## Our Projects
+
+| Project | Description |
+|---------|-------------|
+| [cartsnitch](https://github.com/cartsnitch/cartsnitch) | Main application |
+| [api](https://github.com/cartsnitch/api) | Backend API |
+| [agents](https://github.com/cartsnitch/agents) | Agent services |
+| [receiptwitness](https://github.com/cartsnitch/receiptwitness) | Receipt validation |
+
+---
+
+<p align="center">
+  Built with ❤️ by the CartSnitch team
+</p>