feat: 归档L03与L09审批发布能力

- 新增统一审批中心与审批管理页面，支持流程配置、审批详情与角色/用户审批对象

- 接入聊天助手、知识库、工作流的发布与删除审批，并补齐发布态校验与快照展示

easyflow-ui-admin/packages/tinyflow-ui/src/store/stores.svelte.ts

@@ -1,17 +1,20 @@
 import { type Edge, type Node, type Viewport } from '@xyflow/svelte';
 
+const DEFAULT_VIEWPORT: Viewport = { x: 250, y: 100, zoom: 1 };
+
 const createStore = () => {
   let nodesInternal = $state.raw([] as Node[]);
   let edgesInternal = $state.raw([] as Edge[]);
-  let viewport = $state.raw({ x: 250, y: 100, zoom: 1 } as Viewport);
+  let viewport = $state.raw({ ...DEFAULT_VIEWPORT } as Viewport);
 
   return {
     // nodes: nodesInternal,
     // edges: edgesInternal,
     // viewport,
-    init: (nodes: Node[], edges: Edge[]) => {
+    init: (nodes: Node[], edges: Edge[], nextViewport?: Viewport | null) => {
       nodesInternal = nodes;
       edgesInternal = edges;
+      viewport = nextViewport ? { ...nextViewport } : { ...DEFAULT_VIEWPORT };
     },
 
     getNodes: () => nodesInternal,