test: 添加 account_manager 多账号端口测试

+"""account_manager 单元测试。"""
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+import pytest
+
+# 把 scripts/ 加入路径，使 account_manager 可导入
+sys.path.insert(0, str(Path(__file__).parent.parent / "scripts"))
+import account_manager
+
+
+@pytest.fixture(autouse=True)
+def tmp_config(tmp_path, monkeypatch):
+    """将配置目录重定向到临时目录。"""
+    monkeypatch.setattr(account_manager, "_CONFIG_DIR", tmp_path / ".xhs")
+    monkeypatch.setattr(
+        account_manager, "_ACCOUNTS_FILE", tmp_path / ".xhs" / "accounts.json"
+    )
+
+
+def test_add_account_assigns_port():
+    """首个命名账号应分配端口 9223。"""
+    account_manager.add_account("work", "工作号")
+    port = account_manager.get_account_port("work")
+    assert port == 9223
+
+
+def test_second_account_gets_next_port():
+    """第二个账号应分配端口 9224。"""
+    account_manager.add_account("work")
+    account_manager.add_account("personal")
+    assert account_manager.get_account_port("personal") == 9224
+
+
+def test_get_profile_dir_public():
+    """get_profile_dir 应返回正确路径。"""
+    account_manager.add_account("work")
+    profile = account_manager.get_profile_dir("work")
+    assert "work" in profile
+    assert "chrome-profile" in profile
+
+
+def test_get_account_port_unknown_raises():
+    """不存在的账号应抛出 ValueError。"""
+    with pytest.raises(ValueError, match="不存在"):
+        account_manager.get_account_port("ghost")
+
+
+def test_list_accounts_includes_port():
+    """list_accounts 返回结果中应包含 port 字段。"""
+    account_manager.add_account("work", "工作")
+    accounts = account_manager.list_accounts()
+    assert len(accounts) == 1
+    assert accounts[0]["port"] == 9223