Enhanced global.js and script.js to conditionally load jQuery and Bootstrap only if they are not already present. This change improves loading efficiency and reduces redundant script execution.
Additionally, fixed a bug in renderer.php by removing duplicate Bootstrap loading, which also reduces external dependency.
A new .gitignore file was added to ignore backup files with a .bak extension, helping to keep the repository clean.
Ensured error logging only displays error messages for better clarity.
