Enhancement: long text custom field (#10846)

---------

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

src/documents/migrations/1070_customfieldinstance_value_long_text_and_more.py

@@ -0,0 +1,39 @@
+# Generated by Django 5.2.6 on 2025-09-13 17:11
+
+from django.db import migrations
+from django.db import models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("documents", "1069_workflowtrigger_filter_has_storage_path_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="customfieldinstance",
+            name="value_long_text",
+            field=models.TextField(null=True),
+        ),
+        migrations.AlterField(
+            model_name="customfield",
+            name="data_type",
+            field=models.CharField(
+                choices=[
+                    ("string", "String"),
+                    ("url", "URL"),
+                    ("date", "Date"),
+                    ("boolean", "Boolean"),
+                    ("integer", "Integer"),
+                    ("float", "Float"),
+                    ("monetary", "Monetary"),
+                    ("documentlink", "Document Link"),
+                    ("select", "Select"),
+                    ("longtext", "Long Text"),
+                ],
+                editable=False,
+                max_length=50,
+                verbose_name="data type",
+            ),
+        ),
+    ]