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/pattern/build/index.d.ts

@@ -0,0 +1,65 @@
+/**
+ * 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.
+ */
+
+export declare class TestPathPatterns {
+  readonly patterns: Array<string>;
+  constructor(patterns: Array<string>);
+  /**
+   * Return true if there are any patterns.
+   */
+  isSet(): boolean;
+  /**
+   * Return true if the patterns are valid.
+   */
+  isValid(): boolean;
+  /**
+   * Return a human-friendly version of the pattern regex.
+   */
+  toPretty(): string;
+  /**
+   * Return a TestPathPatternsExecutor that can execute the patterns.
+   */
+  toExecutor(
+    options: TestPathPatternsExecutorOptions,
+  ): TestPathPatternsExecutor;
+  /** For jest serializers */
+  toJSON(): any;
+}
+
+export declare class TestPathPatternsExecutor {
+  readonly patterns: TestPathPatterns;
+  private readonly options;
+  constructor(
+    patterns: TestPathPatterns,
+    options: TestPathPatternsExecutorOptions,
+  );
+  private toRegex;
+  /**
+   * Return true if there are any patterns.
+   */
+  isSet(): boolean;
+  /**
+   * Return true if the patterns are valid.
+   */
+  isValid(): boolean;
+  /**
+   * Return true if the given ABSOLUTE path matches the patterns.
+   *
+   * Throws an error if the patterns form an invalid regex (see `validate`).
+   */
+  isMatch(absPath: string): boolean;
+  /**
+   * Return a human-friendly version of the pattern regex.
+   */
+  toPretty(): string;
+}
+
+export declare type TestPathPatternsExecutorOptions = {
+  rootDir: string;
+};
+
+export {};