docs: remove mentions to Nextjs in docs

docs/how-to/agent-instructions.md

@@ -30,8 +30,8 @@ Here's what you need to know to navigate and contribute effectively.
    - Visualizes emission data from CSV files
    - Run with: `uv run task carbonboard`
 
-4. **🌐 webapp/** - Next.js Web Dashboard
-   - Modern React/Next.js web application
+4. **🌐 webapp/** -  Web Dashboard
+   - Modern React web application
    - Connects to the API backend
    - Run with: `cd webapp && pnpm dev`
 
@@ -83,7 +83,7 @@ Here's what you need to know to navigate and contribute effectively.
    # Python dashboard
    uv run task carbonboard
 
-   # Next.js webapp
+   # Js webapp
    cd webapp
    pnpm install
    pnpm dev
@@ -122,7 +122,7 @@ Here's what you need to know to navigate and contribute effectively.
 
 ### Dashboard Development
 1. **Python Dashboard**: Uses Dash + Plotly, see `codecarbon/viz`
-2. **Next.js Dashboard**: Modern React components in `webapp/src/`
+2. **React Dashboard**: Modern React components in `webapp/src/`
 3. **Connect to API**: Set `CODECARBON_API_URL=http://localhost:8008` for local development
 
 ## Environment Management
@@ -155,7 +155,7 @@ uv run task -l
 - **[CONTRIBUTING.md](https://docs.codecarbon.io/latest/how-to/contributing/)**: Detailed contribution guidelines and setup
 - **[README.md](https://github.com/mlco2/codecarbon/blob/master/README.md)**: Project overview and quickstart
 - **[carbonserver/README.md](https://github.com/mlco2/codecarbon/blob/master/carbonserver/README.md)**: API architecture and database schema
-- **[webapp/README.md](https://github.com/mlco2/codecarbon/blob/master/webapp/README.md)**: Next.js dashboard setup
+- **[webapp/README.md](https://github.com/mlco2/codecarbon/blob/master/webapp/README.md)**: React dashboard setup
 - **[carbonserver/tests/TESTING.md](https://github.com/mlco2/codecarbon/blob/master/carbonserver/tests/TESTING.md)**: Comprehensive testing guide
 
 ### VS Code Debugging
@@ -177,7 +177,7 @@ The repository includes VS Code launch configurations in `docs/how-to/contributi
 │   (package)     │───▶│     (API)       │◀───│  (2 versions)   │
 │                 │    │                 │    │                 │
 │ • CLI tools     │    │ • FastAPI       │    │ • Dash (Python) │
-│ • Tracking core │    │ • PostgreSQL    │    │ • Next.js (Web) │
+│ • Tracking core │    │ • PostgreSQL    │    │ • React   (Web) │
 │ • Data output   │    │ • Authentication│    │ • Visualization │
 └─────────────────┘    └─────────────────┘    └─────────────────┘
 ```

webapp/README.md

@@ -1,63 +1,56 @@
-# Next.js Code Carbon Web Application Project
+# Code Carbon Web Application Project
 
-Welcome to the Code Carbon Next.js Project! This README will guide you through the process of setting up and running the project on your local machine.
+Welcome to the Code Carbon Project! This README will guide you through the process of setting up and running the project on your local machine.
 
 ## Prerequisites
 
 Before you begin, ensure you have the following installed on your system:
 
--   Node.js (version 14 or later)
--   pnpm (better alternative to npm)
--   Git
+- Node.js (version 14 or later)
+- pnpm (better alternative to npm)
+- Git
 
 ## Getting Started
 
 Follow these steps to get the project up and running on your local machine:
 
 1. **Open a terminal and go to the /webapp folder**
 
-    ```bash
-    cd webapp
-    ```
+   ```bash
+   cd webapp
+   ```
 
 2. **Install dependencies**
 
-    ```bash
-    pnpm install
-    ```
+   ```bash
+   pnpm install
+   ```
 
 3. **Set up environment variables**
 
-    This project uses environment variables for configuration. You need to create a `.env` file in the root directory of the project.
+   This project uses environment variables for configuration. You need to create a `.env` file in the root directory of the project.
 
-    - Copy the `.env.example` file and rename it to `.env`:
+   - Copy the `.env.example` file and rename it to `.env`:
 
-        ```bash
-        cp .env.example .env
-        ```
+     ```bash
+     cp .env.example .env
+     ```
 
-    - Open the `.env` file and fill in the necessary values for your local environment.
+   - Open the `.env` file and fill in the necessary values for your local environment.
 
 4. **Run the development server**
 
-    ```bash
-    pnpm dev
-    ```
+   ```bash
+   pnpm dev
+   ```
 
-    The application should now be running on [http://localhost:3000](http://localhost:3000).
+   The application should now be running on [http://localhost:3000](http://localhost:3000).
 
 ## Available Scripts
 
 In the project directory, you can run:
 
--   `pnpm dev`: Runs the app in development mode
--   `pnpm build`: Builds the app for production
--   `pnpm start`: Runs the built app in production mode
--   `pnpm lint`: Runs the linter to check for code style issues
-
-## Learn More
-
-To learn more about Next.js, check out the following resources:
-
--   [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
--   [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+- `pnpm dev`: Runs the app in development mode
+- `pnpm build`: Builds the app for production
+- `pnpm start`: Runs the built app in production mode
+- `pnpm lint`: Runs the linter to check for code style issues