[add] migration script

api/migrations/versions/9ab9b6393f32_20261511.py

@@ -0,0 +1,30 @@
+"""20261511
+
+Revision ID: 9ab9b6393f32
+Revises: 793c31683aa5
+Create Date: 2026-01-13 15:14:54.708405
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '9ab9b6393f32'
+down_revision: Union[str, None] = '793c31683aa5'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(op.f('tool_executions_user_id_fkey'), 'tool_executions', type_='foreignkey')
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_foreign_key(op.f('tool_executions_user_id_fkey'), 'tool_executions', 'users', ['user_id'], ['id'])
+    # ### end Alembic commands ###