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backend/alembic/versions/033_chat_origin_ddl.py

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+"""033_chat_origin_ddl
+
+Revision ID: 3cb5d6a54f2e
+Revises: 6549e47f9adc
+Create Date: 2025-07-22 22:00:48.599729
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = '3cb5d6a54f2e'
+down_revision = '6549e47f9adc'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('chat', sa.Column('origin', sa.Integer(), nullable=True, default=0))  # 0: default, 1: mcp, 2: assistant
+    op.execute('UPDATE chat SET origin = 0 WHERE origin IS NULL')
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('chat', 'origin')
+    # ### end Alembic commands ###