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/common.js

@@ -0,0 +1,22 @@
+const NODE_OPTIONS = process.env.NODE_OPTIONS?.split(/\s+/);
+export const hasFlag = (flag) => NODE_OPTIONS?.includes(flag) || process.argv.includes(flag);
+export const parseVersion = (version) => version.split('.').map(Number.parseFloat);
+export const compareVersion = (version1, version2) => {
+    const versions1 = parseVersion(version1);
+    const versions2 = parseVersion(version2);
+    const length = Math.max(versions1.length, versions2.length);
+    for (let i = 0; i < length; i++) {
+        const v1 = versions1[i] || 0;
+        const v2 = versions2[i] || 0;
+        if (v1 > v2) {
+            return 1;
+        }
+        if (v1 < v2) {
+            return -1;
+        }
+    }
+    return 0;
+};
+export const NODE_VERSION = process.versions.node;
+export const compareNodeVersion = (version) => compareVersion(NODE_VERSION, version);
+//# sourceMappingURL=common.js.map