Add full project README with setup and instructions

Added a complete README file with project overview, tech stack, setup instructions, and next steps.

Author: Syntax-Vibe-Amir

README.md

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+# 🖥️ System Health Dashboard
+
+A lightweight Flask-based dashboard to monitor your system's real-time health — including **CPU**, **RAM**, **Disk usage**, and **system time** — all containerized with **Docker** and powered by **GitHub Actions CI**.
+
+---
+
+## 🚀 Features
+
+- 📊 Real-time system status (CPU, RAM, Disk)
+- 🐍 Backend: Python + Flask + psutil
+- 🌐 Simple HTML frontend
+- 🐳 Docker & docker-compose ready
+- ✅ GitHub Actions CI integrated
+
+---
+
+## 📦 Tech Stack
+
+| Layer     | Technology             |
+|-----------|------------------------|
+| Backend   | Python, Flask, psutil  |
+| Frontend  | HTML                   |
+| Container | Docker, docker-compose |
+| CI/CD     | GitHub Actions         |
+
+---
+
+## 📸 Screenshot
+
+> *(Add a screenshot here once UI is complete)*
+
+---
+
+## ⚙️ How to Run Locally
+
+### 🔧 Using Docker (Recommended)
+
+```bash
+docker-compose up
+```
+
+- **Backend:** [http://localhost:5000/health](http://localhost:5000/health)
+- **Frontend:** Open the file `index.html` in your browser (located at `backend/frontend/index.html`)
+
+---
+
+## 🧪 Health Endpoint Sample Output
+
+```json
+{
+  "cpu": "13%",
+  "ram": "47%",
+  "disk": "62%",
+  "time": "2025-05-29 15:44:01"
+}
+```
+
+---
+
+## 🛠 GitHub Actions CI
+
+- Auto-runs on push to the `main` branch
+- Verifies the `/health` endpoint is working using `curl`
+- Ensures backend boots and responds properly
+
+---
+
+## 🔜 Next Steps
+
+- Add live charts with Chart.js
+- Deploy the project on platforms like Render or Railway
+- Improve the UI and add auto-refresh functionality
+
+---
+
+## 🧑‍💻 Author
+
+**Syntax-Vibe-Amir**  
+🔗 GitHub: [github.com/Syntax-Vibe](https://github.com/Syntax-Vibe)