perf: 优化智能体与工作流幕布渲染性能

- 分阶段加载智能体配置并按需缓存 MCP 工具

- 合并画布状态更新与节点尺寸监听，启用大图可视区域渲染和静态连线

- 隔离 Tinyflow Store 实例并补充数据同步与回归测试

easyflow-ui-admin/packages/tinyflow-vue/src/dataSync.test.ts

@@ -0,0 +1,76 @@
+import { describe, expect, it } from 'vitest';
+
+import { createTinyflowDataSync } from './dataSync';
+
+describe('createTinyflowDataSync', () => {
+  it('克隆真正的外部数据并跳过相同内容', () => {
+    const sync = createTinyflowDataSync();
+    const data = {
+      edges: [],
+      nodes: [{ data: { title: '开始' }, id: 'start', position: { x: 0, y: 0 } }],
+    };
+
+    const cloned = sync.cloneExternalDataIfChanged(data);
+
+    expect(cloned).toEqual(data);
+    expect(cloned).not.toBe(data);
+    expect(sync.cloneExternalDataIfChanged(data)).toBeNull();
+  });
+
+  it('跳过原生画布回传后由父组件形成的属性回声', () => {
+    const sync = createTinyflowDataSync();
+    const emitted = {
+      edges: [],
+      nodes: [{ data: { title: '开始' }, id: 'start', position: { x: 12, y: 8 } }],
+      viewport: { x: 20, y: 30, zoom: 1 },
+    };
+
+    sync.markNativeData(emitted);
+
+    expect(
+      sync.cloneExternalDataIfChanged(structuredClone(emitted)),
+    ).toBeNull();
+  });
+
+  it('原生回传后仍应用内容不同的外部更新', () => {
+    const sync = createTinyflowDataSync();
+    const emitted = {
+      edges: [],
+      nodes: [{ data: { title: '开始' }, id: 'start', position: { x: 12, y: 8 } }],
+    };
+    sync.markNativeData(emitted);
+
+    const external = {
+      ...emitted,
+      nodes: [
+        {
+          ...emitted.nodes[0],
+          data: { title: '已更新' },
+        },
+      ],
+    };
+
+    expect(sync.cloneExternalDataIfChanged(external)).toEqual(external);
+  });
+
+  it('画布变化后允许重新应用曾经加载过的外部版本', () => {
+    const sync = createTinyflowDataSync();
+    const initial = {
+      edges: [],
+      nodes: [{ data: { title: '初始' }, id: 'start', position: { x: 0, y: 0 } }],
+    };
+    expect(sync.cloneExternalDataIfChanged(initial)).toEqual(initial);
+
+    sync.markNativeData({
+      ...initial,
+      nodes: [
+        {
+          ...initial.nodes[0],
+          position: { x: 120, y: 80 },
+        },
+      ],
+    });
+
+    expect(sync.cloneExternalDataIfChanged(initial)).toEqual(initial);
+  });
+});