[FEATURE] Allow configuring temp/sandbox directory location to avoid polluting project root

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

Claude creates tempclaudexxxx files/folders in project root folder

Proposed Solution

to have some temp claude folder for this purpose

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_