chore(config): add initial project configuration and setup files

- Add .env.example with Microsoft Azure AD and Google Cloud OAuth client ID placeholders
- Create .gitignore to exclude node_modules, build output, env files, IDE, OS, logs, and test coverage
- Add .prettierrc for consistent code formatting rules
- Add README.md with project overview, features, setup instructions, project structure, and technologies used
- Add components.json with UI framework and alias configuration
- Configure eslint.config.js for linting TypeScript and React code with recommended settings
- Add index.html as application entry point with root div and main script reference
- Add package-lock.json capturing full dependency tree and versions for reproducible installs

README.md

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+# OneDrive ↔ Google Drive Streamer
+
+A secure, high-performance application to stream files bidirectionally between Microsoft OneDrive and Google Drive. 
+Now powered by a **Node.js Express backend** for reliable server-side streaming and token management.
+
+## Features
+
+- <20> **Bidirectional Transfers**: Move files from OneDrive to Google Drive AND Google Drive to OneDrive.
+- 🚀 **Server-Side Streaming**: Files are piped directly between cloud providers on the server, ensuring faster and more reliable transfers for large files.
+- <20> **Secure OAuth 2.0**: Implements robust Authorization Code Flow via the backend.
+- 📊 **Real-time Progress**: Track transfer status with live progress updates.
+- 📁 **File Management**: Browse and select files from your connected cloud storage.
+
+## Prerequisites
+
+- Node.js (v18 or higher)
+- npm or yarn
+
+## Setup
+
+### 1. Clone the repository
+```bash
+git clone <repository-url>
+cd <repository-directory>
+```
+
+### 2. Install Dependencies
+You need to install dependencies for both the frontend and the backend.
+
+**Frontend:**
+```bash
+npm install
+```
+
+**Backend:**
+```bash
+cd server
+npm install
+cd ..
+```
+
+### 3. Configure Environment Variables
+
+**Frontend (`.env`):**
+Create a `.env` file in the root directory:
+```env
+VITE_MS_CLIENT_ID=your_microsoft_client_id
+VITE_GOOGLE_CLIENT_ID=your_google_client_id
+```
+
+**Backend (`server/.env`):**
+Create a `.env` file in the `server` directory:
+```env
+PORT=3001
+# Microsoft Graph Credentials
+VITE_MS_CLIENT_ID=your_microsoft_client_id
+MS_CLIENT_SECRET=your_microsoft_client_secret
+
+# Google Drive Credentials
+VITE_GOOGLE_CLIENT_ID=your_google_client_id
+GOOGLE_CLIENT_SECRET=your_google_client_secret
+REDIRECT_URI=http://localhost:5173/auth/callback
+```
+
+> **Note:** You must register applications in both Azure Portal and Google Cloud Console. 
+> Ensure the Redirect URI is set to `http://localhost:5173/auth/callback`.
+
+### 4. Run the Application
+
+You need to run both the backend server and the frontend client.
+
+**Start Backend (Terminal 1):**
+```bash
+cd server
+npm run dev
+```
+*Server runs on http://localhost:3001*
+
+**Start Frontend (Terminal 2):**
+```bash
+npm run dev
+```
+*Frontend runs on http://localhost:5173*
+
+## Project Structure
+
+- **`/server`**: Node.js Express Backend
+  - `src/routes`: API endpoints (`/auth`, `/transfer`)
+  - `src/services`: Cloud provider integration (`onedrive.ts`, `googledrive.ts`)
+- **`/src`**: React Frontend
+  - `components`: UI components (Cards, Progress, Alerts)
+  - `lib/api.ts`: API client for communicating with the backend
+  - `App.tsx`: Main application logic and state management
+
+## Technologies
+
+- **Frontend**: React, TypeScript, Vite, Tailwind CSS, Lucide Icons, Shadcn UI
+- **Backend**: Node.js, Express, TypeScript, Axios, Microsoft Graph Client, Google APIs
+
+## License
+
+ISC