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/pure-rand/lib/esm/distribution/UnsafeUniformIntDistribution.js

@@ -0,0 +1,30 @@
+import { unsafeUniformIntDistributionInternal } from './internals/UnsafeUniformIntDistributionInternal.js';
+import { fromNumberToArrayInt64, substractArrayInt64 } from './internals/ArrayInt64.js';
+import { unsafeUniformArrayIntDistributionInternal } from './internals/UnsafeUniformArrayIntDistributionInternal.js';
+var safeNumberMaxSafeInteger = Number.MAX_SAFE_INTEGER;
+var sharedA = { sign: 1, data: [0, 0] };
+var sharedB = { sign: 1, data: [0, 0] };
+var sharedC = { sign: 1, data: [0, 0] };
+var sharedData = [0, 0];
+function uniformLargeIntInternal(from, to, rangeSize, rng) {
+    var rangeSizeArrayIntValue = rangeSize <= safeNumberMaxSafeInteger
+        ? fromNumberToArrayInt64(sharedC, rangeSize)
+        : substractArrayInt64(sharedC, fromNumberToArrayInt64(sharedA, to), fromNumberToArrayInt64(sharedB, from));
+    if (rangeSizeArrayIntValue.data[1] === 0xffffffff) {
+        rangeSizeArrayIntValue.data[0] += 1;
+        rangeSizeArrayIntValue.data[1] = 0;
+    }
+    else {
+        rangeSizeArrayIntValue.data[1] += 1;
+    }
+    unsafeUniformArrayIntDistributionInternal(sharedData, rangeSizeArrayIntValue.data, rng);
+    return sharedData[0] * 0x100000000 + sharedData[1] + from;
+}
+export function unsafeUniformIntDistribution(from, to, rng) {
+    var rangeSize = to - from;
+    if (rangeSize <= 0xffffffff) {
+        var g = unsafeUniformIntDistributionInternal(rangeSize + 1, rng);
+        return g + from;
+    }
+    return uniformLargeIntInternal(from, to, rangeSize, rng);
+}