add manual validation request on the submission form

opus_submitter/submissions/migrations/0007_submission_manual_validation_requested.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.7 on 2025-10-30 11:05
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('submissions', '0006_remove_puzzleresponse_ocr_confidence_score_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='submission',
+            name='manual_validation_requested',
+            field=models.BooleanField(default=False, help_text='Whether the user specifically requested manual validation'),
+        ),
+    ]