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/@sinonjs/commons/lib/called-in-order.test.js

@@ -0,0 +1,121 @@
+"use strict";
+
+var assert = require("@sinonjs/referee-sinon").assert;
+var calledInOrder = require("./called-in-order");
+var sinon = require("@sinonjs/referee-sinon").sinon;
+
+var testObject1 = {
+    someFunction: function () {
+        return;
+    },
+};
+var testObject2 = {
+    otherFunction: function () {
+        return;
+    },
+};
+var testObject3 = {
+    thirdFunction: function () {
+        return;
+    },
+};
+
+function testMethod() {
+    testObject1.someFunction();
+    testObject2.otherFunction();
+    testObject2.otherFunction();
+    testObject2.otherFunction();
+    testObject3.thirdFunction();
+}
+
+describe("calledInOrder", function () {
+    beforeEach(function () {
+        sinon.stub(testObject1, "someFunction");
+        sinon.stub(testObject2, "otherFunction");
+        sinon.stub(testObject3, "thirdFunction");
+        testMethod();
+    });
+    afterEach(function () {
+        testObject1.someFunction.restore();
+        testObject2.otherFunction.restore();
+        testObject3.thirdFunction.restore();
+    });
+
+    describe("given single array argument", function () {
+        describe("when stubs were called in expected order", function () {
+            it("returns true", function () {
+                assert.isTrue(
+                    calledInOrder([
+                        testObject1.someFunction,
+                        testObject2.otherFunction,
+                    ])
+                );
+                assert.isTrue(
+                    calledInOrder([
+                        testObject1.someFunction,
+                        testObject2.otherFunction,
+                        testObject2.otherFunction,
+                        testObject3.thirdFunction,
+                    ])
+                );
+            });
+        });
+
+        describe("when stubs were called in unexpected order", function () {
+            it("returns false", function () {
+                assert.isFalse(
+                    calledInOrder([
+                        testObject2.otherFunction,
+                        testObject1.someFunction,
+                    ])
+                );
+                assert.isFalse(
+                    calledInOrder([
+                        testObject2.otherFunction,
+                        testObject1.someFunction,
+                        testObject1.someFunction,
+                        testObject3.thirdFunction,
+                    ])
+                );
+            });
+        });
+    });
+
+    describe("given multiple arguments", function () {
+        describe("when stubs were called in expected order", function () {
+            it("returns true", function () {
+                assert.isTrue(
+                    calledInOrder(
+                        testObject1.someFunction,
+                        testObject2.otherFunction
+                    )
+                );
+                assert.isTrue(
+                    calledInOrder(
+                        testObject1.someFunction,
+                        testObject2.otherFunction,
+                        testObject3.thirdFunction
+                    )
+                );
+            });
+        });
+
+        describe("when stubs were called in unexpected order", function () {
+            it("returns false", function () {
+                assert.isFalse(
+                    calledInOrder(
+                        testObject2.otherFunction,
+                        testObject1.someFunction
+                    )
+                );
+                assert.isFalse(
+                    calledInOrder(
+                        testObject2.otherFunction,
+                        testObject1.someFunction,
+                        testObject3.thirdFunction
+                    )
+                );
+            });
+        });
+    });
+});