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backend/alembic/versions/a9f2d4e7c301_add_shards_to_users.py

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+"""add shards to users
+
+Revision ID: a9f2d4e7c301
+Revises: f3a1c8e2b950
+Create Date: 2026-03-25 00:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision: str = 'a9f2d4e7c301'
+down_revision: Union[str, Sequence[str], None] = 'f3a1c8e2b950'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.add_column('users', sa.Column('shards', sa.Integer(), nullable=False, server_default='0'))
+
+
+def downgrade() -> None:
+    op.drop_column('users', 'shards')