React Web Skill --- Test-First Development (MANDATORY) CRITICAL: Tests MUST be written BEFORE implementation code. This is non-negotiable for frontend components. The TFD Workflow Component Development Order Test File Structure (Create First) Hook Test First Pattern Enforcement Checklist Before writing ANY component/hook implementation: - [ ] Test file exists: - [ ] All expected behaviors have test cases - [ ] Tests run and FAIL (proves tests are valid) - [ ] Only THEN create implementation file If tests are skipped, Claude MUST: --- Project Structure --- Component Patterns Functional Compone…