refactor(toc): clean up HTML structure and comment out status message

- Simplified the HTML structure of the table of contents page by removing unnecessary comments and whitespace.
- Commented out the status message display in the TypeScript logic for file selection.
- Enhanced readability and maintainability of the code.

src/js/logic/table-of-contents.ts

@@ -107,7 +107,7 @@ function handleFileSelect(file: File) {
   pdfFile = file;
   generateBtn.disabled = false;
   renderFileDisplay(file);
-  showStatus(`File selected: ${file.name}`, 'success');
+  // showStatus(`File selected: ${file.name}`, 'success');
 }
 
 // Drag and drop handlers