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/package.json

@@ -0,0 +1,57 @@
+{
+  "name": "@sinonjs/commons",
+  "version": "3.0.1",
+  "description": "Simple functions shared among the sinon end user libraries",
+  "main": "lib/index.js",
+  "types": "./types/index.d.ts",
+  "scripts": {
+    "build": "rm -rf types && tsc",
+    "lint": "eslint .",
+    "precommit": "lint-staged",
+    "test": "mocha --recursive -R dot \"lib/**/*.test.js\"",
+    "test-check-coverage": "npm run test-coverage && nyc check-coverage --branches 100 --functions 100 --lines 100",
+    "test-coverage": "nyc --reporter text --reporter html --reporter lcovonly npm run test",
+    "prepublishOnly": "npm run build",
+    "prettier:check": "prettier --check '**/*.{js,css,md}'",
+    "prettier:write": "prettier --write '**/*.{js,css,md}'",
+    "preversion": "npm run test-check-coverage",
+    "version": "changes --commits --footer",
+    "postversion": "git push --follow-tags && npm publish",
+    "prepare": "husky install"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/sinonjs/commons.git"
+  },
+  "files": [
+    "lib",
+    "types"
+  ],
+  "author": "",
+  "license": "BSD-3-Clause",
+  "bugs": {
+    "url": "https://github.com/sinonjs/commons/issues"
+  },
+  "homepage": "https://github.com/sinonjs/commons#readme",
+  "lint-staged": {
+    "*.{js,css,md}": "prettier --check",
+    "*.js": "eslint"
+  },
+  "devDependencies": {
+    "@sinonjs/eslint-config": "^4.0.6",
+    "@sinonjs/eslint-plugin-no-prototype-methods": "^0.1.0",
+    "@sinonjs/referee-sinon": "^10.1.0",
+    "@studio/changes": "^2.2.0",
+    "husky": "^6.0.0",
+    "jsverify": "0.8.4",
+    "knuth-shuffle": "^1.0.8",
+    "lint-staged": "^13.0.3",
+    "mocha": "^10.1.0",
+    "nyc": "^15.1.0",
+    "prettier": "^2.7.1",
+    "typescript": "^4.8.4"
+  },
+  "dependencies": {
+    "type-detect": "4.0.8"
+  }
+}