[BUG] Ultraplan: Background tasks require a git repository despite valid git repo, remote, and GitHub app installed

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: 2.1.104
• Repo: public GitHub repo with commits, remote tracking branch set, GitHub Claude App installed
• Error: always shows "Background tasks require a git repository. Initialize git or run from a git repository."
• Tried: git init, git push -u origin main, GitHub App installation at https://github.com/apps/claude/installations/new
• All local git checks pass: worktrees work, rev-parse --show-toplevel returns correct path, remote is configured

What Should Happen?

Launch ultraplan on /ultraplan prompt

Error Messages/Logs

Steps to Reproduce

1. Create a plan for an app in claude terminal
2. Make sure initially its not a git repository
3. Ask the claude to refine the plan using /ultraplan
4. Launch ultraplan
5. Once you get the error that its not a git repository, initialize the git repo.
6. Make your git repo public and install claude
7. Try launching ultraplan again

Claude Model

Sonnet (default)

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.104

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_