Fix archive card showing "Source" badge for sliced .3mf files

The isSlicedFile() check only matched .gcode or .gcode.3mf extensions,
  so archives from .3mf prints (the standard Bambu slicer output) showed
  a "SOURCE" badge instead of "GCODE". Since .3mf can be either sliced or
  a raw CAD export, now checks the archive's total_layers and
  print_time_seconds metadata to distinguish them. Also passes the
  original filename when creating archives from file manager prints.

backend/app/services/background_dispatch.py

@@ -715,6 +715,7 @@ class BackgroundDispatchService:
             archive = await archive_service.archive_print(
                 printer_id=job.printer_id,
                 source_file=file_path,
+                original_filename=lib_file.filename,
             )
             if not archive:
                 raise RuntimeError("Failed to create archive")