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。

src-tauri/tauri.conf.json

@@ -0,0 +1,31 @@
+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "BlockFlow Workbench",
+  "version": "0.1.0",
+  "identifier": "com.blockflow.workbench",
+  "build": {
+    "beforeDevCommand": "npm run dev",
+    "beforeBuildCommand": "npm run build",
+    "devUrl": "http://localhost:5173",
+    "frontendDist": "../dist"
+  },
+  "app": {
+    "windows": [
+      {
+        "label": "main",
+        "title": "BlockFlow Workbench",
+        "width": 1280,
+        "height": 800,
+        "minWidth": 960,
+        "minHeight": 640
+      }
+    ],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": "all"
+  }
+}