docs: add landing repository readme

Author: aleksnick

README.md

@@ -0,0 +1,44 @@
+# Selflify Landing
+
+This repository contains the static marketing site for Selflify.
+
+Website:
+- https://selflify.github.io/
+
+## What is here
+
+- `index.html` — landing page markup
+- `styles.css` — visual styles
+- `app.js` — small client-side interactions
+- `assets/` — screenshots and other static assets
+- `robots.txt`, `sitemap.xml`, `llms.txt` — crawl and discovery files
+
+## Local preview
+
+From the repository root:
+
+```bash
+python3 -m http.server 4173
+```
+
+Then open:
+
+```text
+http://127.0.0.1:4173
+```
+
+## Publishing
+
+GitHub Pages serves this repository directly.
+
+Any push to `main` updates:
+
+```text
+https://selflify.github.io/
+```
+
+## Main project
+
+The application source code lives in:
+
+- https://github.com/Selflify/Selflify