Set up comprehensive frontend testing infrastructure

- Install Jest for unit testing with React Testing Library
- Install Playwright for end-to-end testing
- Configure Jest with proper TypeScript support and module mapping
- Create test setup files and utilities for both unit and e2e tests

Components:
* Jest configuration with coverage thresholds
* Playwright configuration with browser automation
* Unit tests for LoginForm, AuthContext, and useSocketIO hook
* E2E tests for authentication, dashboard, and agents workflows
* GitHub Actions workflow for automated testing
* Mock data and API utilities for consistent testing
* Test documentation with best practices

Testing features:
- Unit tests with 70% coverage threshold
- E2E tests with API mocking and user journey testing
- CI/CD integration for automated test runs
- Cross-browser testing support with Playwright
- Authentication system testing end-to-end

🚀 Generated with [Claude Code](https://claude.ai/code)

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

frontend/node_modules/jest-environment-jsdom/build/index.d.mts

@@ -0,0 +1,11 @@
+import BaseEnv from "@jest/environment-jsdom-abstract";
+import { EnvironmentContext, JestEnvironmentConfig } from "@jest/environment";
+
+//#region src/index.d.ts
+
+declare class JSDOMEnvironment extends BaseEnv {
+  constructor(config: JestEnvironmentConfig, context: EnvironmentContext);
+}
+declare const TestEnvironment: typeof JSDOMEnvironment;
+//#endregion
+export { TestEnvironment, JSDOMEnvironment as default };

frontend/node_modules/jest-environment-jsdom/build/index.d.ts

@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {EnvironmentContext, JestEnvironmentConfig} from '@jest/environment';
+import BaseEnv from '@jest/environment-jsdom-abstract';
+
+declare class JSDOMEnvironment extends BaseEnv {
+  constructor(config: JestEnvironmentConfig, context: EnvironmentContext);
+}
+export default JSDOMEnvironment;
+
+export declare const TestEnvironment: typeof JSDOMEnvironment;
+
+export {};

frontend/node_modules/jest-environment-jsdom/build/index.js

@@ -0,0 +1,55 @@
+/*!
+ * /**
+ *  * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *  *
+ *  * This source code is licensed under the MIT license found in the
+ *  * LICENSE file in the root directory of this source tree.
+ *  * /
+ */
+/******/ (() => { // webpackBootstrap
+/******/ 	"use strict";
+var __webpack_exports__ = {};
+// This entry needs to be wrapped in an IIFE because it uses a non-standard name for the exports (exports).
+(() => {
+var exports = __webpack_exports__;
+
+
+Object.defineProperty(exports, "__esModule", ({
+  value: true
+}));
+exports["default"] = exports.TestEnvironment = void 0;
+function JSDOM() {
+  const data = _interopRequireWildcard(require("jsdom"));
+  JSDOM = function () {
+    return data;
+  };
+  return data;
+}
+function _environmentJsdomAbstract() {
+  const data = _interopRequireDefault(require("@jest/environment-jsdom-abstract"));
+  _environmentJsdomAbstract = function () {
+    return data;
+  };
+  return data;
+}
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+class JSDOMEnvironment extends _environmentJsdomAbstract().default {
+  constructor(config, context) {
+    super(config, context, JSDOM());
+  }
+}
+exports["default"] = JSDOMEnvironment;
+const TestEnvironment = exports.TestEnvironment = JSDOMEnvironment;
+})();
+
+module.exports = __webpack_exports__;
+/******/ })()
+;

frontend/node_modules/jest-environment-jsdom/build/index.mjs

@@ -0,0 +1,4 @@
+import cjsModule from './index.js';
+
+export const TestEnvironment = cjsModule.TestEnvironment;
+export default cjsModule.default;