Cowork: Add ability to remove individual entries from the recent folders list

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

Summary

In the Cowork desktop app, the folder picker shows a list of recently mounted directories. There is currently no way to remove individual stale entries from this list — e.g., old project folders that no longer exist, or paths that are no longer relevant.

Desired Behavior

A simple way to remove individual entries from the recent folders list in the Cowork folder picker — ideally a right-click context menu option ("Remove from recents") or an ✕ button on hover next to each entry.

Current Workaround

The only known workaround is deleting the entire LevelDB database at %APPDATA%\Claude\Local Storage\leveldb, which clears all app state and forces re-authentication. This is heavy-handed for what should be a simple UX action.

Why This Matters

As Cowork users work across multiple projects over time, the recent list accumulates stale paths. A bloated or outdated recents list degrades the experience without any path to clean it up short of nuking the whole database.

Prior Art

Related requests were previously filed (#19474, #35187) and closed. This is a reopen specifically for the Cowork app context, where the folder picker is a core part of the mounting workflow on every session start.

Proposed Solution

A right-click context menu on each recent entry with a "Remove from recents" option, or an ✕ button that appears on hover next to each item in the list. No confirmation dialog needed — it's not a destructive action on the underlying folder, just the reference to it.

Alternative Solutions

The only known workaround is deleting %APPDATA%\Claude\Local Storage\leveldb entirely, which wipes all app state and requires re-authentication. There's no way to selectively remove individual entries.

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

1. I've been using Cowork across several projects over several months.
2. The recent folders list now contains 8+ stale paths — old project folders that no longer exist or are no longer active.
3. Every time I open the folder picker, I scroll past irrelevant entries to find my current workspace.
4. With this feature, I'd right-click the stale entry and hit "Remove" — done in two seconds.

Additional Context

_No response_