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/safer-buffer/dangerous.js

@@ -0,0 +1,58 @@
+/* eslint-disable node/no-deprecated-api */
+
+'use strict'
+
+var buffer = require('buffer')
+var Buffer = buffer.Buffer
+var safer = require('./safer.js')
+var Safer = safer.Buffer
+
+var dangerous = {}
+
+var key
+
+for (key in safer) {
+  if (!safer.hasOwnProperty(key)) continue
+  dangerous[key] = safer[key]
+}
+
+var Dangereous = dangerous.Buffer = {}
+
+// Copy Safer API
+for (key in Safer) {
+  if (!Safer.hasOwnProperty(key)) continue
+  Dangereous[key] = Safer[key]
+}
+
+// Copy those missing unsafe methods, if they are present
+for (key in Buffer) {
+  if (!Buffer.hasOwnProperty(key)) continue
+  if (Dangereous.hasOwnProperty(key)) continue
+  Dangereous[key] = Buffer[key]
+}
+
+if (!Dangereous.allocUnsafe) {
+  Dangereous.allocUnsafe = function (size) {
+    if (typeof size !== 'number') {
+      throw new TypeError('The "size" argument must be of type number. Received type ' + typeof size)
+    }
+    if (size < 0 || size >= 2 * (1 << 30)) {
+      throw new RangeError('The value "' + size + '" is invalid for option "size"')
+    }
+    return Buffer(size)
+  }
+}
+
+if (!Dangereous.allocUnsafeSlow) {
+  Dangereous.allocUnsafeSlow = function (size) {
+    if (typeof size !== 'number') {
+      throw new TypeError('The "size" argument must be of type number. Received type ' + typeof size)
+    }
+    if (size < 0 || size >= 2 * (1 << 30)) {
+      throw new RangeError('The value "' + size + '" is invalid for option "size"')
+    }
+    return buffer.SlowBuffer(size)
+  }
+}
+
+module.exports = dangerous