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/@adobe/css-tools/package.json

@@ -0,0 +1,61 @@
+{
+  "name": "@adobe/css-tools",
+  "version": "4.4.3",
+  "description": "CSS parser / stringifier",
+  "source": "src/index.ts",
+  "main": "./dist/index.cjs",
+  "module": "./dist/index.mjs",
+  "exports": {
+    "import": "./dist/index.mjs",
+    "types": "./dist/types.d.ts",
+    "require": "./dist/index.cjs"
+  },
+  "types": "./dist/types.d.ts",
+  "type": "module",
+  "files": [
+    "dist",
+    "Readme.md"
+  ],
+  "devDependencies": {
+    "@parcel/packager-ts": "2.15.0",
+    "@parcel/transformer-typescript-types": "2.15.0",
+    "@types/benchmark": "^2.1.1",
+    "@types/bytes": "^3.1.5",
+    "@types/jest": "^29.5.3",
+    "@types/node": "^22.15.18",
+    "benchmark": "^2.1.4",
+    "bytes": "^3.1.0",
+    "gts": "^6.0.2",
+    "jest": "^29.6.2",
+    "parcel": "^2.15.0",
+    "ts-jest": "^29.1.1",
+    "typescript": "^5.7.3"
+  },
+  "scripts": {
+    "benchmark": "node benchmark/index.mjs",
+    "test": "jest",
+    "clean": "gts clean && rm -rf ./dist",
+    "build": "parcel build && node ./utils/fix-type-generation.cjs",
+    "fix": "gts fix",
+    "lint": "gts lint",
+    "prepack": "npm run build",
+    "prepare": "npm run build",
+    "pretest": "npm run build",
+    "posttest": "npm run lint"
+  },
+  "author": "TJ Holowaychuk <tj@vision-media.ca>",
+  "contributors": [
+    "Jean-Philippe Zolesio <holblin@gmail.com>"
+  ],
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/adobe/css-tools.git"
+  },
+  "keywords": [
+    "css",
+    "parser",
+    "stringifier",
+    "stylesheet"
+  ]
+}