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/@testing-library/user-event/dist/esm/utils/pointer/cssPointerEvents.js

@@ -0,0 +1,100 @@
+import { PointerEventsCheckLevel } from '../../options.js';
+import { getWindow } from '../misc/getWindow.js';
+import { isElementType } from '../misc/isElementType.js';
+import { ApiLevel, getLevelRef } from '../misc/level.js';
+
+function hasPointerEvents(instance, element) {
+    var _checkPointerEvents;
+    return ((_checkPointerEvents = checkPointerEvents(instance, element)) === null || _checkPointerEvents === undefined ? undefined : _checkPointerEvents.pointerEvents) !== 'none';
+}
+function closestPointerEventsDeclaration(element) {
+    const window = getWindow(element);
+    for(let el = element, tree = []; el === null || el === undefined ? undefined : el.ownerDocument; el = el.parentElement){
+        tree.push(el);
+        const pointerEvents = window.getComputedStyle(el).pointerEvents;
+        if (pointerEvents && ![
+            'inherit',
+            'unset'
+        ].includes(pointerEvents)) {
+            return {
+                pointerEvents,
+                tree
+            };
+        }
+    }
+    return undefined;
+}
+const PointerEventsCheck = Symbol('Last check for pointer-events');
+function checkPointerEvents(instance, element) {
+    const lastCheck = element[PointerEventsCheck];
+    const needsCheck = instance.config.pointerEventsCheck !== PointerEventsCheckLevel.Never && (!lastCheck || hasBitFlag(instance.config.pointerEventsCheck, PointerEventsCheckLevel.EachApiCall) && lastCheck[ApiLevel.Call] !== getLevelRef(instance, ApiLevel.Call) || hasBitFlag(instance.config.pointerEventsCheck, PointerEventsCheckLevel.EachTrigger) && lastCheck[ApiLevel.Trigger] !== getLevelRef(instance, ApiLevel.Trigger));
+    if (!needsCheck) {
+        return lastCheck === null || lastCheck === undefined ? undefined : lastCheck.result;
+    }
+    const declaration = closestPointerEventsDeclaration(element);
+    element[PointerEventsCheck] = {
+        [ApiLevel.Call]: getLevelRef(instance, ApiLevel.Call),
+        [ApiLevel.Trigger]: getLevelRef(instance, ApiLevel.Trigger),
+        result: declaration
+    };
+    return declaration;
+}
+function assertPointerEvents(instance, element) {
+    const declaration = checkPointerEvents(instance, element);
+    if ((declaration === null || declaration === undefined ? undefined : declaration.pointerEvents) === 'none') {
+        throw new Error([
+            `Unable to perform pointer interaction as the element ${declaration.tree.length > 1 ? 'inherits' : 'has'} \`pointer-events: none\`:`,
+            '',
+            printTree(declaration.tree)
+        ].join('\n'));
+    }
+}
+function printTree(tree) {
+    return tree.reverse().map((el, i)=>[
+            ''.padEnd(i),
+            el.tagName,
+            el.id && `#${el.id}`,
+            el.hasAttribute('data-testid') && `(testId=${el.getAttribute('data-testid')})`,
+            getLabelDescr(el),
+            tree.length > 1 && i === 0 && '  <-- This element declared `pointer-events: none`',
+            tree.length > 1 && i === tree.length - 1 && '  <-- Asserted pointer events here'
+        ].filter(Boolean).join('')).join('\n');
+}
+function getLabelDescr(element) {
+    var _element_labels;
+    let label;
+    if (element.hasAttribute('aria-label')) {
+        label = element.getAttribute('aria-label');
+    } else if (element.hasAttribute('aria-labelledby')) {
+        var _element_ownerDocument_getElementById_textContent, _element_ownerDocument_getElementById;
+        label = (_element_ownerDocument_getElementById = element.ownerDocument.getElementById(element.getAttribute('aria-labelledby'))) === null || _element_ownerDocument_getElementById === undefined ? undefined : (_element_ownerDocument_getElementById_textContent = _element_ownerDocument_getElementById.textContent) === null || _element_ownerDocument_getElementById_textContent === undefined ? undefined : _element_ownerDocument_getElementById_textContent.trim();
+    } else if (isElementType(element, [
+        'button',
+        'input',
+        'meter',
+        'output',
+        'progress',
+        'select',
+        'textarea'
+    ]) && ((_element_labels = element.labels) === null || _element_labels === undefined ? undefined : _element_labels.length)) {
+        label = Array.from(element.labels).map((el)=>{
+            var _el_textContent;
+            return (_el_textContent = el.textContent) === null || _el_textContent === undefined ? undefined : _el_textContent.trim();
+        }).join('|');
+    } else if (isElementType(element, 'button')) {
+        var _element_textContent;
+        label = (_element_textContent = element.textContent) === null || _element_textContent === undefined ? undefined : _element_textContent.trim();
+    }
+    label = label === null || label === undefined ? undefined : label.replace(/\n/g, '  ');
+    if (Number(label === null || label === undefined ? undefined : label.length) > 30) {
+        label = `${label === null || label === undefined ? undefined : label.substring(0, 29)}…`;
+    }
+    return label ? `(label=${label})` : '';
+}
+// With the eslint rule and prettier the bitwise operation isn't nice to read
+function hasBitFlag(conf, flag) {
+    // eslint-disable-next-line no-bitwise
+    return (conf & flag) > 0;
+}
+
+export { assertPointerEvents, hasPointerEvents };