refactor: 重构 schemas 结构，统一枚举定义

backend/alembic/versions/20260325_0001_schedule_item_status_converge.py

@@ -0,0 +1,54 @@
+"""converge schedule item status to active or archived
+
+Revision ID: 202603250001
+Revises: 202603240001
+Create Date: 2026-03-25 10:00:00
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+
+revision: str = "202603250001"
+down_revision: Union[str, Sequence[str], None] = "202603240001"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.execute(
+        """
+        UPDATE public.schedule_items
+        SET status = 'archived'
+        WHERE status IN ('completed', 'canceled')
+        """
+    )
+    op.execute(
+        """
+        ALTER TABLE public.schedule_items
+        DROP CONSTRAINT IF EXISTS chk_schedule_item_status
+        """
+    )
+    op.execute(
+        """
+        ALTER TABLE public.schedule_items
+        ADD CONSTRAINT chk_schedule_item_status
+        CHECK (status IN ('active', 'archived'))
+        """
+    )
+
+
+def downgrade() -> None:
+    op.execute(
+        """
+        ALTER TABLE public.schedule_items
+        DROP CONSTRAINT IF EXISTS chk_schedule_item_status
+        """
+    )
+    op.execute(
+        """
+        ALTER TABLE public.schedule_items
+        ADD CONSTRAINT chk_schedule_item_status
+        CHECK (status IN ('active', 'completed', 'canceled', 'archived'))
+        """
+    )