feat(mobile): 区分移动端token存储键名并添加Playwright测试

修改mobile端token存储键名为'mobile_token'以区分不同客户端
添加Playwright测试套件用于知识库管理功能测试
更新.gitignore忽略node_modules和test-results目录

test/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "test",
+  "version": "1.0.0",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "dependencies": {
+    "@playwright/test":"1.51.1"
+  },
+  "author": "",
+  "license": "ISC",
+  "description": ""
+}