chore: 初始化 BlockFlow Workbench 仓库

建立前端与 Tauri 桌面端的首个版本提交，包含核心编辑器、项目文件读写、测试与构建配置。

补充 Git 忽略规则和换行规范，排除依赖、构建产物、本地运行日志与临时验证文件，方便在其他电脑继续开发。

tests/editor.test.tsx

@@ -0,0 +1,62 @@
+import "@testing-library/jest-dom/vitest"
+import { cleanup, fireEvent, render, screen, waitFor } from "@testing-library/react"
+import { afterEach, beforeEach, describe, expect, it } from "vitest"
+import { App } from "../src/app/App"
+import { getCurrentRenderResult, useWorkbenchStore } from "../src/app/store/workbenchStore"
+
+describe("BlockFlowEditor", () => {
+  beforeEach(() => {
+    useWorkbenchStore.getState().resetDemo()
+  })
+
+  afterEach(() => {
+    cleanup()
+  })
+
+  it("renders the demo template in the TipTap editor", () => {
+    render(<App />)
+
+    expect(screen.getByTestId("blockflow-editor")).toHaveTextContent("user.name")
+    expect(screen.getByTestId("blockflow-editor")).toHaveTextContent("fragment_common_footer")
+  })
+
+  it("inserts a variable through the command menu and updates AST", async () => {
+    render(<App />)
+
+    fireEvent.click(screen.getByRole("button", { name: "打开命令菜单" }))
+    fireEvent.click(screen.getByRole("button", { name: "变量 user.email" }))
+
+    await waitFor(() => {
+      const blocks = useWorkbenchStore.getState().snapshot.templates.template_main?.children ?? []
+      expect(JSON.stringify(blocks)).toContain("user.email")
+      expect(useWorkbenchStore.getState().saveStatus).toBe("dirty")
+    })
+  })
+
+  it("inserts condition and loop blocks through the command menu", async () => {
+    render(<App />)
+
+    fireEvent.click(screen.getByRole("button", { name: "打开命令菜单" }))
+    fireEvent.click(screen.getByRole("button", { name: "条件 if user.isVip" }))
+    fireEvent.click(screen.getByRole("button", { name: "打开命令菜单" }))
+    fireEvent.click(screen.getByRole("button", { name: "循环 for item in items" }))
+
+    await waitFor(() => {
+      const blocks = useWorkbenchStore.getState().snapshot.templates.template_main?.children ?? []
+      expect(JSON.stringify(blocks)).toContain("\"type\":\"condition\"")
+      expect(JSON.stringify(blocks)).toContain("\"type\":\"loop\"")
+    })
+  })
+
+  it("keeps render preview connected to the AST after editing", async () => {
+    render(<App />)
+
+    fireEvent.click(screen.getByRole("button", { name: "打开命令菜单" }))
+    fireEvent.click(screen.getByRole("button", { name: "变量 user.email" }))
+
+    await waitFor(() => {
+      const result = getCurrentRenderResult(useWorkbenchStore.getState())
+      expect(result.stats.missingVariables).toContain("user.email")
+    })
+  })
+})