docs: onboarding (#25)

tests/test_onboarding.py

@@ -51,3 +51,20 @@ def test_check_setup_marks_invalid_chat_id(monkeypatch, tmp_path: Path) -> None:
 
     titles = {issue.title for issue in result.issues}
     assert "create a config" in titles
+
+
+def test_onboarding_prefers_new_config_path_for_legacy_file(monkeypatch) -> None:
+    backend = engines.get_backend("codex")
+    monkeypatch.setattr(onboarding.shutil, "which", lambda _name: "/usr/bin/codex")
+    legacy_path = Path.home() / ".codex" / "takopi.toml"
+    monkeypatch.setattr(
+        onboarding,
+        "load_telegram_config",
+        lambda: ({"bot_token": "token", "chat_id": "123"}, legacy_path),
+    )
+
+    result = onboarding.check_setup(backend)
+
+    issue = next(issue for issue in result.issues if issue.title == "create a config")
+    assert any("~/.takopi/takopi.toml" in line for line in issue.lines)
+    assert all(".codex/takopi.toml" not in line for line in issue.lines)