Contact add/delete flow parity (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

[piotr-iohk]

Additionally we should make validation on adding contacts consistent between iOS and Android as per comments:

• Resolve android pubky parity issues from #902 #905 (comment)
• Resolve android pubky parity issues from #902 #905 (review)
• Resolve iOS pubky parity issues from #902 bitkit-ios#527 (comment)

Make validation on adding duplicate contact / self profile / invalid pubky consistent:

• when adding contact by pasting pubky (inline validation)

• when adding contact when scanning/pasting QR code (retry screen - with working retry button)

---

What is currently consistent on iOS and Andrid:

• validation on self profile/invalid pubky addition by pasting pubky -> inline validation

What is currently not consistent on iOS and Andrid:

• there's no duplicate contact validation. (on pasting pubky and scaning/pasting QR code)
• the self profile/invalid pubky validation differs on iOS from Android when scanning/pasting QR code. There's no "Retry" screen on iOS, but invalid QR code toast. Would be good to make it consistent.
• ContactsIntro behavior on iOS vs. Android, see: Resolve iOS pubky parity issues from #902 bitkit-ios#527 (comment)