pwa-developmentlisted

# PWA Development Skill **Purpose:** Build Progressive Web Apps that work offline, install like native apps, and deliver fast, reliable experiences across all devices. --- ## Core PWA Requirements ``` ┌─────────────────────────────────────────────────────────────────┐ │ THE THREE PILLARS OF PWA │ │ ───────────────────────────────────────────────────────────── │ │ │ │ 1. HTTPS │ │ Required for service workers and security. │ │ localhost allowed for development. │ │ │ │ 2. SERVICE WORKER │ │ JavaScript that runs in background. │ │ Enables offline, caching, push notifications. │ │ │ │ 3. WEB APP MANIFEST │ │ JSON file describing app metadata. │ │ Enables installation and app-like experience. │ ├─────────────────────────────────────────────────────────────────┤ │ INSTALLABILITY CRITERIA (Chrome) │ │ ───────────────────────────────────────────────────────────── │ │ • HTTPS (or localhost) │ │