Interactive mode silently exits when working directory is $HOME

Bug Description

Claude Code interactive mode silently exits (exit code 0) immediately after rendering the welcome screen when the current working directory is $HOME (e.g., /root on a Linux server).

Non-interactive mode (claude -p 'hello') works fine from the same directory.

Steps to Reproduce

1. SSH into a Linux server (Debian 10, kernel 4.19, Virtuozzo/OpenVZ VPS)
2. cd ~ (ensure $PWD == $HOME)
3. Run claude
4. Welcome screen renders, input prompt appears briefly
5. Claude exits immediately with exit code 0 — no error message, no debug log entry about the exit

Expected Behavior

Interactive REPL should stay open and accept input.

Actual Behavior

The process exits silently with code 0 right after the REPL mounts. Debug logs show no error — the last entries are AutoUpdaterWrapper and REPL mounted, then nothing.

Workaround

Starting Claude from any subdirectory of $HOME works fine:

mkdir -p ~/workspace && cd ~/workspace && claude  # works
cd ~ && claude  # exits immediately

Environment

• Claude Code v2.1.29 (also reproduced with 2.1.22 and 2.1.19)
• Debian 10 (Buster), kernel 4.19.0
• glibc 2.28
• Node.js v22.22.0
• Virtuozzo/OpenVZ container
• Installed via npm (@anthropic-ai/claude-code)

Debugging Done

• strace -f shows no signal causing the exit — process exits cleanly
• Debug logs (~/.claude/debug/latest) show startup completes normally, REPL mounts, then no further entries
• No .claude project-level config conflict (renaming ~/.claude/projects/-root did not help)
• tmux does not help
• Setting HOME to a different directory and running from the same path works
• The issue is specifically $PWD == $HOME

🤖 Generated with Claude Code