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/index.js

@@ -0,0 +1,73 @@
+import module from 'node:module';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { parentPort, workerData, } from 'node:worker_threads';
+import { MODULE_REGISTER_SUPPORTED } from './constants.js';
+import { extractProperties, overrideStdio, startWorkerThread, } from './helpers.js';
+export * from './common.js';
+export * from './constants.js';
+export * from './helpers.js';
+export * from './types.js';
+let syncFnCache;
+export function createSyncFn(workerPath, timeoutOrOptions) {
+    syncFnCache ?? (syncFnCache = new Map());
+    if (typeof workerPath !== 'string' || workerPath.startsWith('file://')) {
+        workerPath = fileURLToPath(workerPath);
+    }
+    const cachedSyncFn = syncFnCache.get(workerPath);
+    if (cachedSyncFn) {
+        return cachedSyncFn;
+    }
+    if (!path.isAbsolute(workerPath)) {
+        throw new Error('`workerPath` must be absolute');
+    }
+    const syncFn = startWorkerThread(workerPath, typeof timeoutOrOptions === 'number'
+        ? { timeout: timeoutOrOptions }
+        : timeoutOrOptions);
+    syncFnCache.set(workerPath, syncFn);
+    return syncFn;
+}
+export function runAsWorker(fn) {
+    if (!workerData) {
+        return;
+    }
+    const stdio = [];
+    overrideStdio(stdio);
+    const { workerPort, sharedBufferView, pnpLoaderPath } = workerData;
+    if (pnpLoaderPath && MODULE_REGISTER_SUPPORTED) {
+        module.register(pnpLoaderPath);
+    }
+    parentPort.on('message', ({ id, args }) => {
+        ;
+        (async () => {
+            let isAborted = false;
+            const handleAbortMessage = (msg) => {
+                if (msg.id === id && msg.cmd === 'abort') {
+                    isAborted = true;
+                }
+            };
+            workerPort.on('message', handleAbortMessage);
+            let msg;
+            try {
+                msg = { id, stdio, result: await fn(...args) };
+            }
+            catch (error) {
+                msg = { id, stdio, error, properties: extractProperties(error) };
+            }
+            workerPort.off('message', handleAbortMessage);
+            if (isAborted) {
+                stdio.length = 0;
+                return;
+            }
+            try {
+                workerPort.postMessage(msg);
+                Atomics.add(sharedBufferView, 0, 1);
+                Atomics.notify(sharedBufferView, 0);
+            }
+            finally {
+                stdio.length = 0;
+            }
+        })();
+    });
+}
+//# sourceMappingURL=index.js.map