Fix: rename and retag documents one file move at a time

document_renamer sent a fake post_save per document to trigger the move, and document_retagger moved a document once for each field it assigned.

The renamer calls move_files_for_document directly for each document, so progress reflects real work. The retagger opens a file move scope per document, so each document is moved once after all of its assignments.

src/documents/management/commands/document_renamer.py

@@ -1,5 +1,4 @@
-from django.db.models.signals import post_save
-
+from documents.file_moves import move_files_for_document
 from documents.management.commands.base import PaperlessCommand
 from documents.models import Document
 
@@ -11,5 +10,8 @@ class Command(PaperlessCommand):
     supports_multiprocessing = False
 
     def handle(self, *args, **options):
-        for document in self.track(Document.objects.all(), description="Renaming..."):
-            post_save.send(Document, instance=document, created=False)
+        for document in self.track(
+            Document.objects.only("pk"),
+            description="Renaming...",
+        ):
+            move_files_for_document(document.pk)