fix jsonl.d output.

src/wikiq/__init__.py

@@ -527,6 +527,7 @@ class WikiqParser:
         headings: bool = False,
         time_limit_seconds: Union[float, None] = None,
         max_revisions_per_file: int = 0,
+        input_filename: Union[str, None] = None,
     ):
         """
         Parameters:
@@ -535,8 +536,10 @@ class WikiqParser:
                           or a dict mapping namespace -> (pageid, revid) for partitioned output.
                           For single-file: skip all revisions up to and including this point.
            max_revisions_per_file : if > 0, close and rotate output files after this many revisions
+           input_filename : original input filename (needed for .jsonl.d output to derive output filename)
         """
         self.input_file = input_file
+        self.input_filename = input_filename
 
         self.collapse_user: bool = collapse_user
         self.persist: int = persist
@@ -845,13 +848,12 @@ class WikiqParser:
             if self.output_jsonl_dir:
                 # Create directory for JSONL output
                 Path(self.output_file).mkdir(parents=True, exist_ok=True)
-                part_num = 0
-                if self.resume_point is not None and len(self.resume_point) > 2:
-                    part_num = self.resume_point[2]
-                part_numbers[None] = part_num
-                jsonl_path = self._get_part_path(
-                    Path(self.output_file) / "data.jsonl", part_num
-                )
+                # Derive JSONL filename from input filename
+                if self.input_filename:
+                    jsonl_basename = os.path.basename(get_output_filename(self.input_filename, 'jsonl'))
+                else:
+                    jsonl_basename = "data.jsonl"
+                jsonl_path = Path(self.output_file) / jsonl_basename
                 writer = JSONLWriter(str(jsonl_path), schema, append=append_mode)
             else:
                 writer = JSONLWriter(self.output_file, schema, append=append_mode)
@@ -1527,6 +1529,7 @@ def main():
                 headings=args.headings,
                 time_limit_seconds=time_limit_seconds,
                 max_revisions_per_file=args.max_revisions_per_file,
+                input_filename=filename,
             )
 
             # Register signal handlers for graceful shutdown (CLI only)