db: add depends_on_workflow_run_id index (#4037)

alembic/versions/2025_11_19_1929-1001a00ed620_add_depends_on_workflow_run_id_index.py

@@ -0,0 +1,34 @@
+"""add depends_on_workflow_run_id index
+
+Revision ID: 1001a00ed620
+Revises: 39e16cf92225
+Create Date: 2025-11-19 19:29:00.404890+00:00
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "1001a00ed620"
+down_revision: Union[str, None] = "39e16cf92225"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_index(
+        op.f("ix_workflow_runs_depends_on_workflow_run_id"),
+        "workflow_runs",
+        ["depends_on_workflow_run_id"],
+        unique=False,
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f("ix_workflow_runs_depends_on_workflow_run_id"), table_name="workflow_runs")
+    # ### end Alembic commands ###