feat(worktree): onboard creator by default in worktree_prepare.sh (Issue #68)

tests/test_issue21_phase2_loop_a.py

@@ -419,7 +419,7 @@ def test_w6_remove_plain_and_with_stop(ctl, mock_herdr, mock_agents):
     assert os.path.realpath(wt1) not in _worktrees(main)
     assert _git(main, "show-ref", "--verify", "--quiet", f"refs/heads/b-{wt1.name}", check=False).returncode == 0
 
-    res = _prepare(main, wt2, "--creator-agent", "claude")
+    res = _prepare(main, wt2, "--creator-agent", "claude", "--no-onboard")
     assert res.returncode == 0, res.stdout + res.stderr
     name = [r for r in _rows(main) if os.path.realpath(r["pane"]["cwd"]) == os.path.realpath(wt2)][0]["name"]
     res = _run(main, REM, "--path", str(wt2), "--stop")