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/playwright/lib/common/expectBundle.js

@@ -0,0 +1,49 @@
+"use strict";
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var expectBundle_exports = {};
+__export(expectBundle_exports, {
+  EXPECTED_COLOR: () => EXPECTED_COLOR,
+  INVERTED_COLOR: () => INVERTED_COLOR,
+  RECEIVED_COLOR: () => RECEIVED_COLOR,
+  asymmetricMatchers: () => asymmetricMatchers,
+  expect: () => expect,
+  matcherUtils: () => matcherUtils,
+  mock: () => mock,
+  printReceived: () => printReceived
+});
+module.exports = __toCommonJS(expectBundle_exports);
+const expect = require("./expectBundleImpl").expect;
+const mock = require("./expectBundleImpl").mock;
+const asymmetricMatchers = require("./expectBundleImpl").asymmetricMatchers;
+const matcherUtils = require("./expectBundleImpl").matcherUtils;
+const EXPECTED_COLOR = require("./expectBundleImpl").EXPECTED_COLOR;
+const INVERTED_COLOR = require("./expectBundleImpl").INVERTED_COLOR;
+const RECEIVED_COLOR = require("./expectBundleImpl").RECEIVED_COLOR;
+const printReceived = require("./expectBundleImpl").printReceived;
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  EXPECTED_COLOR,
+  INVERTED_COLOR,
+  RECEIVED_COLOR,
+  asymmetricMatchers,
+  expect,
+  matcherUtils,
+  mock,
+  printReceived
+});