Allow configuring LocalCache/Cowork VM data location on Windows (MSIX install)

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

On Windows, Claude Desktop installed via MSIX/Microsoft Store stores all Cowork VM data
in C:\Users\<user>\AppData\Local\Packages\Claude_pzs8sxrjxfjjc\LocalCache

This folder grows to 10-12GB with normal Cowork usage (creating apps, running tasks)
and cannot be moved to another drive. Attempts to use symbolic links or junctions
break the app entirely.

Users with small C: drives (117GB with Windows + other apps) run out of space quickly.
The "Move" button in Windows Settings only moves the executable, not LocalCache.

Users with limited C: drives run out of space quickly with no official workaround.

Proposed Solution

Add a setting in Claude Desktop to configure the data/cache directory location,
similar to how other Electron apps (VS Code, etc.) allow custom data paths.

Alternatively, document an official supported method to move LocalCache to another drive.

Alternative Solutions

• OS: Windows 11
• Install method: MSIX / Microsoft Store
• LocalCache grew to 12GB in 2 days of Cowork usage
• C: drive: 117GB total, leaving only ~30GB free after Claude
• Symbolic links and junctions to D: break the app on startup
• Related issues: #29792, #28892

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_