refactor: update temp file names

app/helpers/file_helper.rb

@@ -539,7 +539,7 @@ def line_wrap(path, width: 160)
     dir = File.dirname(path)
     basename = File.basename(path)
     temp_file = Tempfile.new('truncated_file')
-    output = File.join(dir, "WRAPPED-#{basename}")
+    output = File.join(dir, "#{basename}.tmp")
     begin
       logger.debug "Applying hard column width limit of #{hard_limit} to #{path}"
       system("cut -c-#{hard_limit} #{path.shellescape} > #{temp_file.path}", exception: true)

app/models/task.rb

@@ -1017,7 +1017,7 @@ def make_pdf
         next unless f[:type] == "code"
         name = File.basename(f[:path])
         dir = File.dirname(f[:path])
-        tempfile_path = File.join(dir, "WRAPPED-" + name)
+        tempfile_path = File.join(dir, "#{name}.tmp")
         if File.exist? tempfile_path
           File.unlink(tempfile_path)
           logger.debug "Deleted #{tempfile_path}"

app/views/task/task_pdf.pdf.erb

@@ -117,7 +117,7 @@ No Tutor % Supervisor's Name
       dir = File.dirname(file[:path])
       name = File.basename(file[:path])
       pygments_lang = Task.pygments_lang(File.extname(file[:path])[1..-1])
-      wrapped_file = File.join(dir, "WRAPPED-" + name)
+      wrapped_file = File.join(dir, "#{name}.tmp")
   %>
     <% unless File.symlink?(wrapped_file) %>
 \begin{tcolorbox}[colback=blue!5!white,colframe=blue!75!black]