fix(db): 合并 3 个 alembic 迁移 head（发车 0.4.4 前置，no-op merge 节点）

alembic/versions/8e04cc13a211_merge_notification_comparison_user_idx_.py

@@ -0,0 +1,26 @@
+"""merge notification/comparison_user_idx/monitoring_audit heads
+
+Revision ID: 8e04cc13a211
+Revises: comparison_user_created_idx, monitoring_audit_rbac, notification_table
+Create Date: 2026-07-23 15:37:26.967540
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '8e04cc13a211'
+down_revision: Union[str, Sequence[str], None] = ('comparison_user_created_idx', 'monitoring_audit_rbac', 'notification_table')
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass