fix: avoid xreach false alarm and xiaoyuzhou install crash

tests/test_twitter_channel.py

@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*-
+
+from unittest.mock import patch, Mock
+
+from agent_reach.channels.twitter import _detect_xreach_version, TwitterChannel
+
+
+def _cp(stdout="", stderr="", returncode=0):
+    m = Mock()
+    m.stdout = stdout
+    m.stderr = stderr
+    m.returncode = returncode
+    return m
+
+
+def test_detect_xreach_version_prefers_npm_when_cli_version_is_stale():
+    with patch("shutil.which", return_value="/opt/homebrew/bin/npm"), patch(
+        "subprocess.run",
+        side_effect=[
+            _cp(stdout="0.3.0\n"),
+            _cp(stdout='{"dependencies":{"xreach-cli":{"version":"0.3.2"}}}'),
+        ],
+    ):
+        assert _detect_xreach_version("/opt/homebrew/bin/xreach") == "0.3.2"
+
+
+def test_twitter_channel_does_not_false_warn_when_npm_has_newer_xreach():
+    channel = TwitterChannel()
+    with patch("shutil.which", side_effect=lambda name: "/opt/homebrew/bin/xreach" if name == "xreach" else "/opt/homebrew/bin/npm"), patch(
+        "subprocess.run",
+        side_effect=[
+            _cp(stdout="0.3.0\n"),
+            _cp(stdout='{"dependencies":{"xreach-cli":{"version":"0.3.2"}}}'),
+            _cp(stdout="authenticated\n", returncode=0),
+        ],
+    ):
+        status, message = channel.check()
+    assert status == "ok"
+    assert "完整可用" in message

tests/test_xiaoyuzhou_install.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+
+from unittest.mock import patch
+
+import agent_reach.cli as cli
+
+
+class _DummyConfig:
+    def get(self, _key):
+        return None
+
+
+def test_install_xiaoyuzhou_deps_does_not_raise_when_no_groq_key(capsys):
+    with patch("agent_reach.config.Config", return_value=_DummyConfig()), \
+         patch("os.path.isfile", side_effect=lambda p: True if str(p).endswith("transcribe.sh") else False), \
+         patch("shutil.which", return_value=None):
+        cli._install_xiaoyuzhou_deps()
+
+    out = capsys.readouterr().out
+    assert "Xiaoyuzhou" in out
+    assert "Groq API key not set" in out