[Infrastructure] Production Readiness - Phase 3: Performance & Monitoring Framework

[marcusrbrown]

Overview

Establish comprehensive performance monitoring and Core Web Vitals tracking system with real-time monitoring, error tracking, and accessibility auditing automation.

Phase Goals

• GOAL-003: Establish comprehensive performance monitoring and Core Web Vitals tracking system

Tasks

• TASK-015: Implement Core Web Vitals monitoring system in src/modules/performance-monitoring.ts with real-time tracking
• TASK-016: Create performance budget enforcement in scripts/performance-budget-check.js with automated CI/CD integration
• TASK-017: Implement error tracking integration in src/modules/error-tracking.ts using Sentry or similar privacy-preserving service
• TASK-018: Create network monitoring system in src/modules/network-monitoring.ts with offline detection and user feedback
• TASK-019: Implement accessibility auditing automation in test/production/accessibility-audit.spec.ts using axe-core and Pa11y
• TASK-020: Create production analytics framework in src/modules/production-analytics.ts with privacy-first data collection
• TASK-021: Implement real user monitoring (RUM) system with Core Web Vitals reporting and performance insights dashboard

Key Requirements

• REQ-006: Create performance budgets and Core Web Vitals tracking with automated regression detection
• REQ-008: Establish automated accessibility auditing and WCAG 2.1 AA compliance verification
• PERF-001: Maintain Core Web Vitals scores (LCP < 2.5s, FID < 100ms, CLS < 0.1) across all device types and network conditions
• SEC-002: Establish error tracking integration with privacy-preserving data collection

Dependencies

• Completion of Phase 1: Core Infrastructure Validation and Phase 2: Feature Integration Testing
• Performance monitoring tools (Lighthouse CI, Web Vitals library) for automated testing
• Privacy-preserving error tracking service or self-hosted solution
• Accessibility testing tools (axe-core, Pa11y) for automated compliance validation

Acceptance Criteria

• Core Web Vitals monitoring system tracks LCP, FID, and CLS in real-time
• Performance budget enforcement automatically detects and prevents regressions
• Error tracking integration provides privacy-preserving production error monitoring
• Network monitoring system detects offline states and provides user feedback
• Accessibility auditing automation ensures WCAG 2.1 AA compliance across all pages
• Production analytics framework collects privacy-first usage data and insights
• Real user monitoring (RUM) system provides comprehensive performance insights dashboard

Related Files

• src/modules/performance-monitoring.ts
• src/modules/error-tracking.ts
• src/modules/network-monitoring.ts
• src/modules/production-analytics.ts
• scripts/performance-budget-check.js
• test/production/accessibility-audit.spec.ts