chore: 安装 Playwright + 配置 E2E 基础框架

- 安装 @playwright/test 1.60.0
- 创建 e2e/playwright.config.ts（webServer 自动启动 vite dev）
- 创建 e2e/mocks/ipc.ts（Tauri IPC mock）
- 新增 npm run test:e2e 脚本

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
-  "name": "v4.0",
-  "version": "0.0.0",
+  "name": "patheditor",
+  "version": "4.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "v4.0",
-      "version": "0.0.0",
+      "name": "patheditor",
+      "version": "4.0.0",
       "dependencies": {
         "@tailwindcss/vite": "^4.3.0",
         "@tauri-apps/api": "^2.11.0",
@@ -21,6 +21,7 @@
       },
       "devDependencies": {
         "@eslint/js": "^10.0.1",
+        "@playwright/test": "^1.60.0",
         "@tauri-apps/cli": "^2.11.2",
         "@types/node": "^24.12.3",
         "@types/react": "^19.2.14",
@@ -582,6 +583,22 @@
         "url": "https://github.com/sponsors/Boshen"
       }
     },
+    "node_modules/@playwright/test": {
+      "version": "1.60.0",
+      "resolved": "https://registry.npmmirror.com/@playwright/test/-/test-1.60.0.tgz",
+      "integrity": "sha512-O71yZIbAh/PxDMNGns37GHBIfrVkEVyn+AXyIa5dOTfb4/xNvRWV+Vv/NMbNCtODB/pO7vLlF2OTmMVLhmr7Ag==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright": "1.60.0"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@rolldown/binding-android-arm64": {
       "version": "1.0.2",
       "resolved": "https://registry.npmmirror.com/@rolldown/binding-android-arm64/-/binding-android-arm64-1.0.2.tgz",
@@ -3050,6 +3067,53 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
+    "node_modules/playwright": {
+      "version": "1.60.0",
+      "resolved": "https://registry.npmmirror.com/playwright/-/playwright-1.60.0.tgz",
+      "integrity": "sha512-hheHdokM8cdqCb0lcE3s+zT4t4W+vvjpGxsZlDnikarzx8tSzMebh3UiFtgqwFwnTnjYQcsyMF8ei2mCO/tpeA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright-core": "1.60.0"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.60.0",
+      "resolved": "https://registry.npmmirror.com/playwright-core/-/playwright-core-1.60.0.tgz",
+      "integrity": "sha512-9bW6zvX/m0lEbgTKJ6YppOKx8H3VOPBMOCFh2irXFOT4BbHgrx5hPjwJYLT40Lu+4qtD36qKc/Hn56StUW57IA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/playwright/node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmmirror.com/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/postcss": {
       "version": "8.5.15",
       "resolved": "https://registry.npmmirror.com/postcss/-/postcss-8.5.15.tgz",