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/synckit/lib/constants.js

@@ -0,0 +1,54 @@
+import { compareNodeVersion, hasFlag } from './common.js';
+export const TsRunner = {
+    Node: 'node',
+    Bun: 'bun',
+    TsNode: 'ts-node',
+    EsbuildRegister: 'esbuild-register',
+    EsbuildRunner: 'esbuild-runner',
+    OXC: 'oxc',
+    SWC: 'swc',
+    TSX: 'tsx',
+};
+const { NODE_OPTIONS: NODE_OPTIONS_ = '', SYNCKIT_EXEC_ARGV = '', SYNCKIT_GLOBAL_SHIMS, SYNCKIT_TIMEOUT, SYNCKIT_TS_RUNNER, } = process.env;
+export const TS_ESM_PARTIAL_SUPPORTED = compareNodeVersion('16') >= 0 &&
+    compareNodeVersion('18.19') < 0;
+export const MTS_SUPPORTED = compareNodeVersion('20.8') >= 0;
+export const MODULE_REGISTER_SUPPORTED = MTS_SUPPORTED ||
+    compareNodeVersion('18.19') >= 0;
+export const STRIP_TYPES_NODE_VERSION = '22.6';
+export const TRANSFORM_TYPES_NODE_VERSION = '22.7';
+export const FEATURE_TYPESCRIPT_NODE_VERSION = '22.10';
+export const DEFAULT_TYPES_NODE_VERSION = '23.6';
+export const STRIP_TYPES_FLAG = '--experimental-strip-types';
+export const TRANSFORM_TYPES_FLAG = '--experimental-transform-types';
+export const NO_STRIP_TYPES_FLAG = '--no-experimental-strip-types';
+export const NODE_OPTIONS = NODE_OPTIONS_.split(/\s+/);
+export const NO_STRIP_TYPES = hasFlag(NO_STRIP_TYPES_FLAG) &&
+    (compareNodeVersion(FEATURE_TYPESCRIPT_NODE_VERSION) >= 0
+        ? process.features.typescript === false
+        : !hasFlag(STRIP_TYPES_FLAG) && !hasFlag(TRANSFORM_TYPES_FLAG));
+export const DEFAULT_TIMEOUT = SYNCKIT_TIMEOUT ? +SYNCKIT_TIMEOUT : undefined;
+export const DEFAULT_EXEC_ARGV = SYNCKIT_EXEC_ARGV.split(',');
+export const DEFAULT_TS_RUNNER = SYNCKIT_TS_RUNNER;
+export const DEFAULT_GLOBAL_SHIMS = ['1', 'true'].includes(SYNCKIT_GLOBAL_SHIMS);
+export const DEFAULT_GLOBAL_SHIMS_PRESET = [
+    {
+        moduleName: 'node-fetch',
+        globalName: 'fetch',
+    },
+    {
+        moduleName: 'node:perf_hooks',
+        globalName: 'performance',
+        named: 'performance',
+    },
+];
+export const IMPORT_FLAG = '--import';
+export const REQUIRE_FLAG = '--require';
+export const REQUIRE_ABBR_FLAG = '-r';
+export const REQUIRE_FLAGS = new Set([REQUIRE_FLAG, REQUIRE_ABBR_FLAG]);
+export const LOADER_FLAG = '--loader';
+export const EXPERIMENTAL_LOADER_FLAG = '--experimental-loader';
+export const LOADER_FLAGS = new Set([LOADER_FLAG, EXPERIMENTAL_LOADER_FLAG]);
+export const IMPORT_FLAG_SUPPORTED = compareNodeVersion('20.6') >= 0;
+export const INT32_BYTES = 4;
+//# sourceMappingURL=constants.js.map