Project memory bleeds across accounts — personal project context loads in work account session

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Here's the updated summary:

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Title: Project memory bleeds across accounts — personal project context loads in work account session

Description:

I have two Claude accounts on the same machine: a personal account and a work account. I develop a personal project on my personal account.

When I log in to Claude Code with my work account, the memory and project context from my personal project still loads into the session — even when I open Claude Code from a completely different working directory.

Expected behavior: Project memory and context should be isolated per account. Switching to a work account should not expose personal project data.

Actual behavior: The personal project's MEMORY.md (stored at ~/.claude/projects/<project-path>/memory/MEMORY.md) is injected into work account sessions. The project memory directory under ~/.claude/ appears to be shared across accounts on the same machine.

Workaround attempted: Opening Claude Code from a different working directory — did not resolve the issue.

Environment:

• Platform: macOS (Darwin 25.5.0)
• Shell: zsh

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What Should Happen?

Claude should load project according to which account uses is signed in

Error Messages/Logs

Steps to Reproduce

Add this section before Environment:

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Steps to Reproduce:

1. Have two Claude accounts (personal and work) on the same machine
2. Use Claude Code with your personal account in a personal project directory — build up project memory over time
3. Log out of the personal account and log in with your work account
4. Open Claude Code from a different working directory (a work project)
5. Observe that the personal project's memory context is still injected into the new session

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Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.159

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_