[FEATURE] Add "Unarchive" option to restore archived sessions

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

When managing multiple sessions in Claude Code, it's easy to accidentally archive a session. Once archived, the session can only be viewed through the archived filter but cannot be restored to the active session list. This forces users to start a new session and lose the convenience of resuming the original one, even though the session data still exists. There should be a way to undo an accidental archive action.

Proposed Solution

Add an "Unarchive" or "Restore" option when viewing archived sessions (e.g., via /resume with the archived filter). Ideally, hovering over an archived session would show a restore icon (similar to the existing archive icon), and clicking it would move the session back to the active session list. The restored session should be fully resumable, just as it was before archiving.

Alternative Solutions

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Priority

Medium - Would be very helpful

Feature Category

File operations

Use Case Example

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Additional Context

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