[BUG] --worktree CLI flag rejects non-git repos without checking for WorktreeCreate hooks

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 --worktree does an early git check and exits before consulting WorktreeCreate hooks:

$ cd ~/repo && claude --worktree test-session
Error: Can only use --worktree in a git repository, but /Users/tonyambrus/repo is not a git repository

However, the EnterWorktree tool (invoked mid-session) works correctly — it checks for WorktreeCreate hooks first via (minified function) YV1() before requiring git. The --worktree CLI flag should follow the same logic.

What Should Happen?

If WorktreeCreate hooks are configured, --worktree should proceed with hook-based worktree creation regardless of whether the cwd is a git repo. This is the documented behavior for the EnterWorktree tool: "Outside a git repository: delegates to WorktreeCreate/WorktreeRemove hooks."

Error Messages/Logs

Error: Can only use --worktree in a git repository, but /Users/tonyambrus is not a git repository

Steps to Reproduce

1. Configure WorktreeCreate/WorktreeRemove hooks in settings.json
2. cd to a non-git repo (e.g., Sapling/EdenFS)
3. Run claude --worktree test-session
4. Get rejected immediately with "Can only use --worktree in a git repository"

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.7.0

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Related to #28363 — hook-based worktrees have multiple issues. This bug prevents even creating them via the CLI flag.