feat: add selective vCard batch workflows

src/govoplan_addresses/backend/migrations/versions/d6e8f9a0b1c2_vcard_batch_runs.py

@@ -0,0 +1,34 @@
+"""Allow profile-free persisted vCard batch runs.
+
+Revision ID: d6e8f9a0b1c2
+Revises: c5d7e8f9a0b1
+"""
+
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "d6e8f9a0b1c2"
+down_revision = "c5d7e8f9a0b1"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("addresses_import_runs") as batch:
+        batch.alter_column(
+            "profile_id",
+            existing_type=sa.String(length=36),
+            nullable=True,
+        )
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("addresses_import_runs") as batch:
+        batch.alter_column(
+            "profile_id",
+            existing_type=sa.String(length=36),
+            nullable=False,
+        )