📱 Mobile: Capacitor integration and native iOS/Android builds

[shard-c6]

Description

As part of the GreenGuard Mobile Transition, we need to wrap our responsive Next.js frontend into native mobile applications using Capacitor.

Tasks

• Initialize Capacitor in the frontend repository (npx cap init).
• Build and sync the iOS and Android projects.
• Implement Capacitor plugins for native device features (Camera for visual diagnosis, Haptics for micro-interactions).
• Setup a CI/CD pipeline step to build the mobile artifacts (.apk, .ipa).