Contact add/delete flow parity - trashcan vs. pencil (iOS + Android)

[piotr-iohk]

Problem or use case

Contact deletion UX is not fully consistent:

• between iOS and Android
• between entry flows (post-add contact details vs existing contact details)

Figma currently shows different variants by flow, and the apps are not aligned on one clear behavior.

Proposed solution

Adopt v61 flow:

• after adding contact land on contact details with trashcan icon (currently we land on contact list)
• on displaying contact details show pencil instead of trashcan

or make it consistent for now across both apps.

Alternatives considered

n/a

Additional context

• Figma references:
  • has trash/delete affordance in post-add flow: https://www.figma.com/design/ltqvnKiejWj0JQiqtDf2JJ/Bitkit-Wallet?node-id=41985-198989&t=wtUXVHelMmLof1ps-0
  • no trash in existing-contact detail flow: https://www.figma.com/design/ltqvnKiejWj0JQiqtDf2JJ/Bitkit-Wallet?node-id=40364-130143&t=wtUXVHelMmLof1ps-0
• Supporting image:
  • https://github.com/user-attachments/assets/4b7a6003-4f8b-4276-b654-1f664e6d98f4
• Related PRs:
  • Resolve iOS pubky parity issues from #902 bitkit-ios#527
  • Resolve android pubky parity issues from #902 #905
• Done when:
  • iOS + Android match the same chosen flow
  • ContactDeletedToast is emitted on successful delete on both apps
  • E2E covers add->delete and existing-contact delete paths