docs: add initial README with project overview, features, and setup instructions

README.md

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+# Bikelane
+
+Bikelane is a full-stack web application for managing users and administration tasks for a bike lane system. It features a React-based admin panel, a user-facing frontend, and an Express.js backend with a MySQL database.
+
+## Project Structure
+
+```
+. ├── backend/ # Express.js backend API ├── frontend_admin/ # React admin panel (Vite + Tailwind CSS) ├── frontend_user/ # React user frontend (Vite + Tailwind CSS) ├── scheme.sql # MySQL database schema and mock data ├── docker-compose.yml # Multi-container orchestration └── README.md
+```
+
+## Features
+
+- **Admin Panel:** Manage users, edit user data, and perform admin tasks.
+- **User Frontend:** User-facing interface (work in progress).
+- **Authentication:** JWT-based login for admins and users.
+- **Theming:** Light/dark theme toggle in admin panel.
+- **Dockerized:** Easy setup with Docker and Docker Compose.
+- **MySQL Database:** User data storage and management.
+
+## Getting Started
+
+### Prerequisites
+
+- [Docker](https://www.docker.com/)
+- [Node.js](https://nodejs.org/) (for local development)
+
+### Quick Start with Docker
+
+1. **Clone the repository:**
+   ```sh
+   git clone <your-repo-url>
+   cd bikelane
+   ```
+2. **Start all services:**
+   ```sh
+   docker-compose up --build
+   ```
+   Backend: http://localhost:5002
+   Admin Frontend: http://localhost:5001
+   User Frontend: http://localhost:5003
+   MySQL: localhost:3307
+3. **Database:**
+    The schema and mock data are in scheme.sql.
+    MySQL root password and DB credentials are set in docker-compose.yml and .env.
+
+# Local Development
+### Backend
+1. **Navigate to the backend directory:**
+   ```sh
+    cd backend
+    npm install
+    npm start
+   ```
+   **Backend will run on http://localhost:5002**
+
+### Admin Frontend
+1. **Navigate to the admin frontend directory:**
+   ```sh
+   cd frontend_admin
+   npm install
+   npm run dev
+   ```
+   **Admin Frontend will run on http://localhost:5001**
+
+### User Frontend
+1. **Navigate to the user frontend directory:**
+   ```sh
+   cd frontend_user
+   npm install
+   npm run dev
+   ```
+   **User Frontend will run on http://localhost:5003**
+
+## Usage
+- **Admin Login:** Use credentials from the mock data in scheme.sql (e.g., username: test1, password: 1test).
+- **User Management:** Add, edit, or delete users from the admin panel.
+- **Theme Switch:** Toggle between light and dark mode in the admin panel.
+
+## Technologies
+- **Frontend:** React, Vite, Tailwind CSS, TypeScript
+- **Backend:** Express.js, MySQL, JWT (jose)
+- **DevOps:** Docker, Docker Compose
+
+## Contributing
+Contributions are welcome! Please fork the repo and submit a pull request.
+
+## License
+This project is licensed under the MIT License.
+
+Repository: https://git.the1s.de/theis.gaedigk/bikelane