Benchmark — Performance Baseline & Regression Detection When to Use - Before and after a PR to measure performance impact - Setting up performance baselines for a project - When users report "it feels slow" - Before a launch — ensure you meet performance targets - Comparing your stack against alternatives How It Works Mode 1: Page Performance Measures real browser metrics via browser MCP: Mode 2: API Performance Benchmarks API endpoints: Mode 3: Build Performance Measures development feedback loop: Mode 4: Before/After Comparison Run before and after a change to measure impact: Output: Output…