docs: add README with stack overview and Coolify deploy steps

README.md

@@ -0,0 +1,36 @@
+# QR Code Studio
+
+Browser app to generate styled QR codes from a URL with a center logo, custom
+body (dot) style, custom corner edges, and adjustable logo padding.
+
+## Stack
+
+- Vue 3 + Vite + TypeScript
+- [`qr-code-styling`](https://github.com/kozakdenys/qr-code-styling) for rendering
+
+## Development
+
+```bash
+npm install
+npm run dev
+```
+
+## Production build
+
+```bash
+npm run build
+npm run preview
+```
+
+## Deploy to Coolify
+
+The repo ships a multi-stage `Dockerfile` (Node build → nginx serve) and an
+`nginx.conf`. In Coolify:
+
+1. Create a new resource → **Application** → **Dockerfile** (or Git-based).
+2. Point it at this repository / branch.
+3. Coolify auto-detects the `Dockerfile`. Container exposes port **80**.
+4. Set a domain in Coolify — it handles TLS via Traefik/Caddy.
+5. Deploy.
+
+No environment variables are required; the app is fully client-side.