Add interactive digital business card PWA with user engagement features

[Copilot]

This PR implements a complete Progressive Web App (PWA) for a digital business card with interactive user engagement features.

Features Implemented

Core Functionality

• Digital Business Card: Professional layout displaying contact information for Stacey Williams, Certified Service Technician at Mercedes Benz Of Collierville
• Click-to-Copy: Users can click any contact field (phone, email, website) to copy it to clipboard
• Toast Notifications: Visual feedback system confirming successful copy operations
• QR Code Generation: Automatic vCard QR code generation for easy contact saving
• PWA Installation: Native app installation capability with install prompt handling

Technical Implementation

• Offline Support: Service worker integration for offline functionality
• Responsive Design: Mobile-first design with smooth animations and hover effects
• Security: Subresource Integrity (SRI) for CDN resources to prevent tampering
• Accessibility: Semantic HTML structure with proper ARIA considerations
• Maintainability: Centralized contact data configuration for easy updates

Files Changed

• index.html: Main business card interface with all interactive features
• style.css: Enhanced styles including toast notification styling
• sw.js: Updated service worker with relative paths for portability
• manifest.json: Updated PWA manifest with relative start URL

Testing & Quality

• ✅ Security scan passed (0 vulnerabilities found)
• ✅ Code review feedback addressed
• ✅ Relative paths used for cross-environment portability
• ✅ Modern clipboard API with legacy browser fallback
• ✅ Responsive design tested across different viewport sizes

The implementation provides a complete, production-ready PWA that works offline and can be installed as a native app on supported devices.

Original prompt

https://github.com/copilot/tasks/pull/PR_kwDOO8v_is62emxh?session_id=9fba2a05-7070-4bcd-8e01-41f23b036281

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[Stacey77]

@copilot CONTINUE

[Copilot]

@copilot CONTINUE

I've completed the implementation of the user interaction features for the digital business card PWA. The changes include:

✅ Created index.html with a professional business card layout
✅ Click-to-copy functionality for all contact information
✅ PWA install button with native prompt handling
✅ QR code generation for vCard data
✅ Toast notifications for user feedback
✅ Service worker for offline capability
✅ Responsive design with smooth animations
✅ Security improvements (SRI for CDN resources)
✅ Centralized contact data for easy maintenance

All code review feedback has been addressed and security checks have passed. The implementation is ready for review. (Commits: 2025b24, 16564d4, da09262, bb52535)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• cdnjs.cloudflare.com
  • Triggering command: /usr/bin/curl curl -s REDACTED (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)