Capacitor App Upgrade v5 to v6

Move a Capacitor 5 app to Capacitor 6. Source of truth: https://capacitorjs.com/docs/updating/6-0

When to Use

• @capacitor/core in the snapshot below is 5.x and the user wants 6.x.
• After upgrading: Android users lose localStorage/cookies, a local (non-npm) iOS plugin reports "<Name>" plugin is not implemented on ios, pinch-zoom stopped working on iOS, or TypeScript errors around addListener.
• The user asks for the exact 5 -> 6 checklist.

Do not use:

• App on 4.x -> capacitor-app-upgrade-v4-to-v5 first. On 6.x -> capacitor-app-upgrade-v6-to-v7. Multi-hop planning -> capacitor-app-upgrades.
• Plugin library upgrade -> capacitor-plugin-upgrade-v5-to-v6.
• Moving iOS from CocoaPods to SPM (experimental in 6) -> cocoapods-to-spm.

Live Project Snapshot