Publish curated MobilityOps source snapshot

backend/alembic/versions/799d8800e241_outbox_last_error_code.py

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+"""outbox last_error_code
+
+Revision ID: 799d8800e241
+Revises: e7b08389f47f
+Create Date: 2026-08-03 10:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision: str = '799d8800e241'
+down_revision: Union[str, None] = 'e7b08389f47f'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.add_column('outbox_events', sa.Column('last_error_code', sa.String(length=60), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column('outbox_events', 'last_error_code')