[BUG] --dangerously-skip-permissions (and bypassPermissions mode) does not suppress Write/Edit approval prompt in --print mode

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?

Claude Code version: 2.1.291 (also reproduced on 2.1.288)

Description:
In non-interactive --print mode, none of the following actually bypass the file-write permission prompt: --dangerously-skip-permissions, --dangerously-skip-permissions combined with --allow-dangerously-skip-permissions, or --permission-mode bypassPermissions. The CLI still responds as if the Write/Edit tool call needs approval, and since there's no one to approve it in a non-interactive context, the tool call is effectively denied and the session reports it can't write the file.

This breaks any headless/cron-style automation that relies on claude --print --dangerously-skip-permissions to edit files unattended.

Steps to reproduce:

mkdir -p /tmp/claude_perm_test && cd /tmp/claude_perm_test
echo hello > test.txt
claude --print --dangerously-skip-permissions "Append WORLD to test.txt"
cat test.txt
Expected: test.txt is edited to include "WORLD", no prompt.

Actual:

I don't have permission to write test.txt — please grant write access and I'll append "WORLD" to it.
test.txt is left unchanged (hello).

Additional notes:

Reproduced in a clean shell with no CLAUDE_CODE_CHILD_SESSION/CLAUDECODE env vars set, ruling out nested-session contamination.
Also tried --permission-mode bypassPermissions alone and combined with --permission-prompts none — same failure (with --permission-prompts none, the CLI explicitly says it has "no approval surface" and auto-denies, rather than bypassing).
This surfaced while debugging a failing macOS launchd cron job that calls claude --print --dangerously-skip-permissions "<prompt>" to edit a file unattended — the job runs but silently fails to write anything every time.

What Should Happen?

Expected: test.txt is edited to include "WORLD", no prompt.

Error Messages/Logs

get a result: I don't have permission to write test.txt — please grant write access and I'll append "WORLD" to it.

Steps to Reproduce

mkdir -p /tmp/claude_perm_test && cd /tmp/claude_perm_test
echo hello > test.txt
claude --print --dangerously-skip-permissions "Append WORLD to test.txt"
cat test.txt

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Not sure

Claude Code Version

Claude Code version: 2.1.291 (also reproduced on 2.1.288)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_