Revert "mercore starter"

This reverts commit 8bb5ce69e2.

migrations/versions/b3a5e10bc77e_.py

@@ -0,0 +1,32 @@
+"""empty message
+
+Revision ID: b3a5e10bc77e
+Revises: e8dd9b841ad7
+Create Date: 2025-05-27 01:52:48.538333
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'b3a5e10bc77e'
+down_revision = 'e8dd9b841ad7'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('loans', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('reference', sa.String(length=50), nullable=True))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('loans', schema=None) as batch_op:
+        batch_op.drop_column('reference')
+
+    # ### end Alembic commands ###