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/console/build/index.d.ts

@@ -0,0 +1,131 @@
+/**
+ * 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 {Console as Console_2} from 'console';
+import {WriteStream} from 'tty';
+import {InspectOptions} from 'util';
+import {Config} from '@jest/types';
+import {StackTraceConfig} from 'jest-message-util';
+
+export declare class BufferedConsole extends Console_2 {
+  private readonly _buffer;
+  private _counters;
+  private _timers;
+  private _groupDepth;
+  Console: typeof Console_2;
+  constructor();
+  static write(
+    this: void,
+    buffer: ConsoleBuffer,
+    type: LogType,
+    message: LogMessage,
+    stackLevel?: number,
+  ): ConsoleBuffer;
+  private _log;
+  assert(value: unknown, message?: string | Error): void;
+  count(label?: string): void;
+  countReset(label?: string): void;
+  debug(firstArg: unknown, ...rest: Array<unknown>): void;
+  dir(firstArg: unknown, options?: InspectOptions): void;
+  dirxml(firstArg: unknown, ...rest: Array<unknown>): void;
+  error(firstArg: unknown, ...rest: Array<unknown>): void;
+  group(title?: string, ...rest: Array<unknown>): void;
+  groupCollapsed(title?: string, ...rest: Array<unknown>): void;
+  groupEnd(): void;
+  info(firstArg: unknown, ...rest: Array<unknown>): void;
+  log(firstArg: unknown, ...rest: Array<unknown>): void;
+  time(label?: string): void;
+  timeEnd(label?: string): void;
+  timeLog(label?: string, ...data: Array<unknown>): void;
+  warn(firstArg: unknown, ...rest: Array<unknown>): void;
+  getBuffer(): ConsoleBuffer | undefined;
+}
+
+export declare type ConsoleBuffer = Array<LogEntry>;
+
+export declare class CustomConsole extends Console_2 {
+  private readonly _stdout;
+  private readonly _stderr;
+  private readonly _formatBuffer;
+  private _counters;
+  private _timers;
+  private _groupDepth;
+  Console: typeof Console_2;
+  constructor(
+    stdout: WriteStream,
+    stderr: WriteStream,
+    formatBuffer?: Formatter,
+  );
+  private _log;
+  private _logError;
+  assert(value: unknown, message?: string | Error): asserts value;
+  count(label?: string): void;
+  countReset(label?: string): void;
+  debug(firstArg: unknown, ...args: Array<unknown>): void;
+  dir(firstArg: unknown, options?: InspectOptions): void;
+  dirxml(firstArg: unknown, ...args: Array<unknown>): void;
+  error(firstArg: unknown, ...args: Array<unknown>): void;
+  group(title?: string, ...args: Array<unknown>): void;
+  groupCollapsed(title?: string, ...args: Array<unknown>): void;
+  groupEnd(): void;
+  info(firstArg: unknown, ...args: Array<unknown>): void;
+  log(firstArg: unknown, ...args: Array<unknown>): void;
+  time(label?: string): void;
+  timeEnd(label?: string): void;
+  timeLog(label?: string, ...data: Array<unknown>): void;
+  warn(firstArg: unknown, ...args: Array<unknown>): void;
+  getBuffer(): undefined;
+}
+
+declare type Formatter = (type: LogType, message: LogMessage) => string;
+
+export declare function getConsoleOutput(
+  buffer: ConsoleBuffer,
+  config: StackTraceConfig,
+  globalConfig: Config.GlobalConfig,
+): string;
+
+export declare type LogEntry = {
+  message: LogMessage;
+  origin: string;
+  type: LogType;
+};
+
+export declare type LogMessage = string;
+
+export declare type LogType =
+  | 'assert'
+  | 'count'
+  | 'debug'
+  | 'dir'
+  | 'dirxml'
+  | 'error'
+  | 'group'
+  | 'groupCollapsed'
+  | 'info'
+  | 'log'
+  | 'time'
+  | 'warn';
+
+export declare class NullConsole extends CustomConsole {
+  assert(): void;
+  debug(): void;
+  dir(): void;
+  error(): void;
+  info(): void;
+  log(): void;
+  time(): void;
+  timeEnd(): void;
+  timeLog(): void;
+  trace(): void;
+  warn(): void;
+  group(): void;
+  groupCollapsed(): void;
+  groupEnd(): void;
+}
+
+export {};