refactor: remove unused components and styles; consolidate password handling in new components

- Deleted ProtectedRoute, ContentWrapper, CustomCarousel, CustomContainer, CustomModal, Footer, Header, and Building components as they were no longer needed.
- Removed associated CSS files for the deleted components.
- Introduced PasswordInput and PasswordModal components to handle password input and modal display for protected pastes.
- Updated PastePanel to utilize new PasswordInput and PasswordModal components for better password management.
- Refactored Home component to streamline data fetching and improve readability.
- Enhanced error handling in useData hook and improved session management logic.

src/components/Pastes/PublicPasteItem.jsx

@@ -9,7 +9,7 @@ const trimContent = (text, maxLength = 80) => {
 const PublicPasteItem = ({ paste, onSelect }) => {
   return (
     <div className="public-paste-item p-2 mb-2 rounded custom-border" style={{ cursor: "pointer" }} onClick={() => onSelect(paste.pasteKey)}>
-      <h5 className="m-0">{paste.title}</h5>
+      <h5 className="m-0">{(paste.title ?? "").trim() || "Sin título"}</h5>
       <p className="m-0 text-truncate">{trimContent(paste.content, 100)}</p>
       <small className="custom-text-muted">
         {new Date(paste.createdAt).toLocaleString()}