fixing ls logic that doesn't grab expected files

src/server/parse_archive.py

@@ -28,7 +28,7 @@ class ArchiveParser:
         try:
             # Use ls with tail and head commands for efficient pagination
             # Get all directories, skip the first start_index, then get count number of entries
-            cmd = f"ls -1 {self.archive_dir} | tail -n +{start_index + 1} | head -n {count}"
+            cmd = f"ls -1 {self.archive_dir} | tail -{start_index + 1} | head -{count}"
             print("Running cmd: " + cmd)
             result = subprocess.run(
                 cmd, shell=True, capture_output=True, text=True, check=True, timeout=30