Добавлена отправка накладных на почту

alembic/versions/20260524_035_add_waybill_email_sent_at.py

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+"""Add waybill_email_sent_at column to orders table."""
+
+from collections.abc import Sequence
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision: str = "20260524_035"
+down_revision: str | None = "20260524_034"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "orders",
+        sa.Column(
+            "waybill_email_sent_at",
+            sa.DateTime(timezone=True),
+            nullable=True,
+        ),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("orders", "waybill_email_sent_at")