feat(workflow): add execution configuration and structured execution state to workflow

database/versions/7c1a2b3d4e5f_2_2_9.py

@@ -0,0 +1,45 @@
+"""2.2.9
+为工作流增加执行配置和结构化执行状态
+
+Revision ID: 7c1a2b3d4e5f
+Revises: d5e6f7a8b9c0
+Create Date: 2026-06-04
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+revision = "7c1a2b3d4e5f"
+down_revision = "d5e6f7a8b9c0"
+branch_labels = None
+depends_on = None
+
+
+def _has_column(inspector: sa.Inspector, table_name: str, column_name: str) -> bool:
+    """检查数据表是否已存在指定列。"""
+    if table_name not in inspector.get_table_names():
+        return False
+    return any(column["name"] == column_name for column in inspector.get_columns(table_name))
+
+
+def _add_json_column_if_missing(table_name: str, column_name: str) -> None:
+    """缺失时为数据表新增 JSON 列。"""
+    inspector = sa.inspect(op.get_bind())
+    if not _has_column(inspector, table_name, column_name):
+        op.add_column(table_name, sa.Column(column_name, sa.JSON(), nullable=True))
+
+
+def upgrade() -> None:
+    """升级数据库结构。"""
+    _add_json_column_if_missing("workflow", "execution_config")
+    _add_json_column_if_missing("workflow", "execution_state")
+
+
+def downgrade() -> None:
+    """回滚数据库结构。"""
+    inspector = sa.inspect(op.get_bind())
+    if _has_column(inspector, "workflow", "execution_state"):
+        op.drop_column("workflow", "execution_state")
+    inspector = sa.inspect(op.get_bind())
+    if _has_column(inspector, "workflow", "execution_config"):
+        op.drop_column("workflow", "execution_config")