Added event listener for id=extract-btn and enhanced the contributing…

CONTRIBUTING.md

@@ -43,6 +43,17 @@ Welcome to GSSoC! Here's how the contribution flow works for this project:
    ```bash
    git checkout -b your-feature-name
    ```
+5. **Install Dependencies**
+   ```bash
+   npm install
+   ```
+6. Create a .env file and copy paste everything from .env.example and replace your api key there.
+
+7. **Run the backend** (Backend serves Frontend)
+   ```bash
+   npm start
+   ```
+8. Start [Local Host 3000](http://localhost:3000/)
 
 ---
 

js/app.js

@@ -65,6 +65,18 @@ const addItemsBtn = document.getElementById('add-btn');
 const downloadBtn = document.getElementById('download-btn');
 const newTaskBtn = document.getElementById('add-task-btn');
 
+// Event listener for extract-btn
+pasteInput.addEventListener('keydown', (e) => {
+  if (e.key === 'Enter' && !e.shiftKey) {
+    e.preventDefault();
+
+    if (!pasteInput.value.trim()) return;
+    if (extractBtn.disabled) return;
+
+    extractBtn.click();
+  }
+});
+
 
 
 const SUBJECT_COLORS = [