Canonical examples for creating and editing Roo Code modes. Each example demonstrates structured workflows, least-privilege configuration, contradiction resolution, and completion formatting, without referencing runtime implementation details. Edit the Test mode to add benchmark testing and performance guidance using Vitest's bench API. I want to edit the test mode to add benchmark testing support. Clarify scope and features Ask the user a focused clarifying question to confirm which scope/features to include; provide 2–4 actionable options. Outcome: selected scope. User selects: Add benchmark testing with Vitest bench API Immerse in current mode config and instructions Review .roomodes, inventory .roo/rules-test recursively, and review .roo/rules-test/1_workflow.xml. Outcome: confirm roleDefinition, file restrictions, and existing workflows. Confirm roleDefinition, file restrictions, and existing workflows. Update roleDefinition in .roomodes Edit .roomodes to update the roleDefinition, adding benchmark testing and performance guidance topics. Outcome: roleDefinition updated to include performance/bench themes. Extend file restrictions to include .bench files Edit .roomodes to extend the fileRegex to include .bench.(ts|tsx|js|jsx) and update the description accordingly. Outcome: file restrictions now cover benchmark files. Create benchmark guidance file Create a new file at .roo/rules-test/5_benchmark_testing.xml with guidance and examples. Outcome: new guidance file available to the mode. Guidelines for performance benchmarks using Vitest bench API Basic structure import { bench, describe } from 'vitest'; describe('Array operations', () => { bench('Array.push', () => { const arr: number[] = []; for (let i = 0; i < 1000; i++) arr.push(i); }); bench('Array spread', () => { let arr: number[] = []; for (let i = 0; i < 1000; i++) arr = [...arr, i]; }); }); Use meaningful names and isolate benchmarks Document expectations and thresholds Provide a concise summary of what was accomplished and how it addresses the user's request. Important lesson from this example Pattern that can be reused