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/reporters/multiplexer.js

@@ -0,0 +1,104 @@
+"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 multiplexer_exports = {};
+__export(multiplexer_exports, {
+  Multiplexer: () => Multiplexer
+});
+module.exports = __toCommonJS(multiplexer_exports);
+class Multiplexer {
+  constructor(reporters) {
+    this._reporters = reporters;
+  }
+  version() {
+    return "v2";
+  }
+  onConfigure(config) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onConfigure?.(config));
+  }
+  onBegin(suite) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onBegin?.(suite));
+  }
+  onTestBegin(test, result) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onTestBegin?.(test, result));
+  }
+  onStdOut(chunk, test, result) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onStdOut?.(chunk, test, result));
+  }
+  onStdErr(chunk, test, result) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onStdErr?.(chunk, test, result));
+  }
+  onTestEnd(test, result) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onTestEnd?.(test, result));
+  }
+  async onEnd(result) {
+    for (const reporter of this._reporters) {
+      const outResult = await wrapAsync(() => reporter.onEnd?.(result));
+      if (outResult?.status)
+        result.status = outResult.status;
+    }
+    return result;
+  }
+  async onExit() {
+    for (const reporter of this._reporters)
+      await wrapAsync(() => reporter.onExit?.());
+  }
+  onError(error) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onError?.(error));
+  }
+  onStepBegin(test, result, step) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onStepBegin?.(test, result, step));
+  }
+  onStepEnd(test, result, step) {
+    for (const reporter of this._reporters)
+      wrap(() => reporter.onStepEnd?.(test, result, step));
+  }
+  printsToStdio() {
+    return this._reporters.some((r) => {
+      let prints = false;
+      wrap(() => prints = r.printsToStdio ? r.printsToStdio() : true);
+      return prints;
+    });
+  }
+}
+async function wrapAsync(callback) {
+  try {
+    return await callback();
+  } catch (e) {
+    console.error("Error in reporter", e);
+  }
+}
+function wrap(callback) {
+  try {
+    callback();
+  } catch (e) {
+    console.error("Error in reporter", e);
+  }
+}
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  Multiplexer
+});