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/onetime/index.d.ts

@@ -0,0 +1,64 @@
+declare namespace onetime {
+	interface Options {
+		/**
+		Throw an error when called more than once.
+
+		@default false
+		*/
+		throw?: boolean;
+	}
+}
+
+declare const onetime: {
+	/**
+	Ensure a function is only called once. When called multiple times it will return the return value from the first call.
+
+	@param fn - Function that should only be called once.
+	@returns A function that only calls `fn` once.
+
+	@example
+	```
+	import onetime = require('onetime');
+
+	let i = 0;
+
+	const foo = onetime(() => ++i);
+
+	foo(); //=> 1
+	foo(); //=> 1
+	foo(); //=> 1
+
+	onetime.callCount(foo); //=> 3
+	```
+	*/
+	<ArgumentsType extends unknown[], ReturnType>(
+		fn: (...arguments: ArgumentsType) => ReturnType,
+		options?: onetime.Options
+	): (...arguments: ArgumentsType) => ReturnType;
+
+	/**
+	Get the number of times `fn` has been called.
+
+	@param fn - Function to get call count from.
+	@returns A number representing how many times `fn` has been called.
+
+	@example
+	```
+	import onetime = require('onetime');
+
+	const foo = onetime(() => {});
+	foo();
+	foo();
+	foo();
+
+	console.log(onetime.callCount(foo));
+	//=> 3
+	```
+	*/
+	callCount(fn: (...arguments: any[]) => unknown): number;
+
+	// TODO: Remove this for the next major release
+	default: typeof onetime;
+};
+
+export = onetime;

frontend/node_modules/onetime/index.js

@@ -0,0 +1,44 @@
+'use strict';
+const mimicFn = require('mimic-fn');
+
+const calledFunctions = new WeakMap();
+
+const onetime = (function_, options = {}) => {
+	if (typeof function_ !== 'function') {
+		throw new TypeError('Expected a function');
+	}
+
+	let returnValue;
+	let callCount = 0;
+	const functionName = function_.displayName || function_.name || '<anonymous>';
+
+	const onetime = function (...arguments_) {
+		calledFunctions.set(onetime, ++callCount);
+
+		if (callCount === 1) {
+			returnValue = function_.apply(this, arguments_);
+			function_ = null;
+		} else if (options.throw === true) {
+			throw new Error(`Function \`${functionName}\` can only be called once`);
+		}
+
+		return returnValue;
+	};
+
+	mimicFn(onetime, function_);
+	calledFunctions.set(onetime, callCount);
+
+	return onetime;
+};
+
+module.exports = onetime;
+// TODO: Remove this for the next major release
+module.exports.default = onetime;
+
+module.exports.callCount = function_ => {
+	if (!calledFunctions.has(function_)) {
+		throw new Error(`The given function \`${function_.name}\` is not wrapped by the \`onetime\` package`);
+	}
+
+	return calledFunctions.get(function_);
+};

frontend/node_modules/onetime/license

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

frontend/node_modules/onetime/package.json

@@ -0,0 +1,43 @@
+{
+	"name": "onetime",
+	"version": "5.1.2",
+	"description": "Ensure a function is only called once",
+	"license": "MIT",
+	"repository": "sindresorhus/onetime",
+	"funding": "https://github.com/sponsors/sindresorhus",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=6"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"once",
+		"function",
+		"one",
+		"onetime",
+		"func",
+		"fn",
+		"single",
+		"call",
+		"called",
+		"prevent"
+	],
+	"dependencies": {
+		"mimic-fn": "^2.1.0"
+	},
+	"devDependencies": {
+		"ava": "^1.4.1",
+		"tsd": "^0.7.1",
+		"xo": "^0.24.0"
+	}
+}

frontend/node_modules/onetime/readme.md

@@ -0,0 +1,94 @@
+# onetime [![Build Status](https://travis-ci.com/sindresorhus/onetime.svg?branch=master)](https://travis-ci.com/github/sindresorhus/onetime)
+
+> Ensure a function is only called once
+
+When called multiple times it will return the return value from the first call.
+
+*Unlike the module [once](https://github.com/isaacs/once), this one isn't naughty and extending `Function.prototype`.*
+
+## Install
+
+```
+$ npm install onetime
+```
+
+## Usage
+
+```js
+const onetime = require('onetime');
+
+let i = 0;
+
+const foo = onetime(() => ++i);
+
+foo(); //=> 1
+foo(); //=> 1
+foo(); //=> 1
+
+onetime.callCount(foo); //=> 3
+```
+
+```js
+const onetime = require('onetime');
+
+const foo = onetime(() => {}, {throw: true});
+
+foo();
+
+foo();
+//=> Error: Function `foo` can only be called once
+```
+
+## API
+
+### onetime(fn, options?)
+
+Returns a function that only calls `fn` once.
+
+#### fn
+
+Type: `Function`
+
+Function that should only be called once.
+
+#### options
+
+Type: `object`
+
+##### throw
+
+Type: `boolean`\
+Default: `false`
+
+Throw an error when called more than once.
+
+### onetime.callCount(fn)
+
+Returns a number representing how many times `fn` has been called.
+
+Note: It throws an error if you pass in a function that is not wrapped by `onetime`.
+
+```js
+const onetime = require('onetime');
+
+const foo = onetime(() => {});
+
+foo();
+foo();
+foo();
+
+console.log(onetime.callCount(foo));
+//=> 3
+```
+
+#### fn
+
+Type: `Function`
+
+Function to get call count from.
+
+## onetime for enterprise
+
+Available as part of the Tidelift Subscription.
+
+The maintainers of onetime and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-onetime?utm_source=npm-onetime&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)