Allow deleting archived sessions in Claude Code iOS app

Description

Currently, archived sessions in the Claude Code iOS app (under "アーカイブ済み") can only be viewed but not deleted.

Expected Behavior

Users should be able to delete archived sessions — for example, via swipe-to-delete or a long-press context menu.

Steps to Reproduce

1. Open Claude Code iOS app
2. Scroll to "アーカイブ済み" section
3. Tap into the archived device (e.g., outannoMacBook-Pro)
4. No option to delete any archived session

Platform

• iOS app