feat: update UI components and styles for improved user experience

- Removed obsolete PDF file from the mock directory.
- Updated index.html to change the favicon and title for the application.
- Deleted unused vite.svg file and replaced it with shapes.svg.
- Enhanced App component layout and styling.
- Refined Form1 component with better spacing and updated styles.
- Improved Form2 component to enhance item selection UI and responsiveness.
- Updated Form4 component to improve loan display and interaction.
- Enhanced Header component styling for better visibility.
- Refined LoginForm component for a more modern look.
- Updated Object component styles for better text visibility.
- Improved Sidebar component layout and item display.
- Updated global CSS for better touch target improvements.
- Enhanced Layout component for better responsiveness and structure.
- Updated main.tsx to change toast notification theme.
- Updated tailwind.config.js to include index.html for Tailwind CSS processing.

frontend/tailwind.config.js

@@ -1,5 +1,6 @@
 module.exports = {
   content: [
+    "./index.html",
     "./src/**/*.{js,jsx,ts,tsx}",
     // add other paths if needed
   ],