Feature request: ability to unarchive archived sessions (Claude Code tab, macOS desktop app)

Feature request

Platform: Claude Code tab in the Claude desktop app (macOS)

Problem:
Sometimes after archiving a session, I realize I want to continue working on it. Currently there's no way to restore/unarchive an archived session.

Proposed solution:
Add an "unarchive" option that allows users to restore a previously archived session back to the active sessions list, so they can resume working on it.

Use case:
Sessions may be archived prematurely or the context they contain may become relevant again later. Being able to unarchive would avoid having to start a fresh session and re-establish context.