feat: 完成Tab④账号管理

- 新增 accounts 服务层，封装账号 CRUD、目录创建、端口分配与登录检测

- 接入 PySide6 账号管理 Tab：表格、账号弹窗、启动登录、后台检测登录

- 密码仅本地保存并在 UI 打码，表格不展示明文；不自动登录或填密码

- 增加顶部 Tab 栏防误点样式，扩大点击区域并高亮当前 Tab

- 补充账号服务和 GUI 单元测试，并同步架构、API、路由、任务和进度文档

tests/test_accounts.py

@@ -0,0 +1,142 @@
+import os
+import unittest
+from unittest import mock
+
+from _helpers import TempDirMixin
+
+from app import accounts
+from app import config as account_config
+
+
+class AccountsTests(TempDirMixin, unittest.TestCase):
+    def make_config(self, temp_dir):
+        return {
+            "chrome_path": "chrome.exe",
+            "user_data_root": os.path.join(temp_dir, "chrome_user_data_dir"),
+            "db_path": os.path.join(temp_dir, "cmshopee.db"),
+            "debug_port_range": [9222, 9224],
+        }
+
+    def test_create_account_stores_record_and_creates_user_data_dir(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            account = accounts.create_account(
+                "主店",
+                "alias",
+                "https://seller.shopee.tw/portal/",
+                9222,
+                password="secret",
+                note="备注",
+                config=cfg,
+            )
+
+            self.assertEqual("主店", account.account_name)
+            self.assertEqual("alias", account.alias)
+            self.assertEqual("seller.shopee.tw", account.region_host)
+            self.assertEqual("alias_cdb6fdbe", account.slug)
+            self.assertTrue(os.path.isdir(account.user_data_dir))
+            self.assertEqual("******", accounts.mask_password(account.password))
+            self.assertEqual([account], accounts.list_accounts(config=cfg))
+
+        self.assert_removed(temp_dir)
+
+    def test_update_account_can_change_alias_and_rebuild_directory(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            accounts.create_account("主店", "alias", debug_port=9222, config=cfg)
+
+            updated = accounts.update_account(
+                "alias",
+                "新主店",
+                "new alias",
+                "seller.shopee.tw",
+                9333,
+                password="new-secret",
+                note="新备注",
+                config=cfg,
+            )
+
+            self.assertEqual("new alias", updated.alias)
+            self.assertEqual(account_config.make_slug("new alias"), updated.slug)
+            self.assertEqual(9333, updated.debug_port)
+            self.assertTrue(os.path.isdir(updated.user_data_dir))
+            with self.assertRaises(accounts.AccountError):
+                accounts.get_account("alias", config=cfg)
+            self.assertEqual("new-secret", accounts.get_account("new alias", config=cfg).password)
+
+        self.assert_removed(temp_dir)
+
+    def test_next_debug_port_skips_existing_accounts(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            accounts.create_account("店1", "a1", debug_port=9222, config=cfg)
+            accounts.create_account("店2", "a2", debug_port=9223, config=cfg)
+
+            self.assertEqual(9224, accounts.next_debug_port(config=cfg))
+
+        self.assert_removed(temp_dir)
+
+    def test_launch_for_login_only_launches_chrome(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            account = accounts.create_account("主店", "alias", debug_port=9222, config=cfg)
+            process = object()
+
+            with mock.patch("app.accounts.chrome.launch_chrome", return_value=process) as launch:
+                result = accounts.launch_for_login("alias", config=cfg)
+
+            self.assertIs(process, result)
+            launch.assert_called_once_with(account, config=cfg)
+
+        self.assert_removed(temp_dir)
+
+    def test_detect_login_updates_last_login_at_when_logged_in(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            accounts.create_account("主店", "alias", debug_port=9222, config=cfg)
+
+            with mock.patch(
+                "app.accounts.editor.login_status",
+                return_value={"logged_in": True, "reason": None},
+            ) as login_status:
+                status = accounts.detect_login("alias", timeout=1, config=cfg)
+
+            self.assertTrue(status["logged_in"])
+            login_status.assert_called_once()
+            self.assertIsNotNone(accounts.get_account("alias", config=cfg).last_login_at)
+
+        self.assert_removed(temp_dir)
+
+    def test_duplicate_alias_raises_clear_error(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            accounts.create_account("店1", "alias", debug_port=9222, config=cfg)
+
+            with self.assertRaises(accounts.AccountError):
+                accounts.create_account("店2", "alias", debug_port=9223, config=cfg)
+
+        self.assert_removed(temp_dir)
+
+    def test_duplicate_debug_port_raises_clear_error(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            accounts.create_account("店1", "a1", debug_port=9222, config=cfg)
+            accounts.create_account("店2", "a2", debug_port=9223, config=cfg)
+
+            with self.assertRaises(accounts.AccountError):
+                accounts.create_account("店3", "a3", debug_port=9222, config=cfg)
+            with self.assertRaises(accounts.AccountError):
+                accounts.update_account(
+                    "a2",
+                    "店2",
+                    "a2",
+                    "seller.shopee.tw",
+                    9222,
+                    config=cfg,
+                )
+
+        self.assert_removed(temp_dir)
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_gui.py

@@ -5,40 +5,126 @@ import sys
 os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
 sys.path.insert(0, os.path.dirname(__file__))
 
+from _helpers import TempDirMixin
+
 from app import gui
+from app import accounts
 
 if gui.QT_IMPORT_ERROR is not None:
     raise unittest.SkipTest("PySide6 未安装")
 
-from PySide6.QtWidgets import QApplication
+from PySide6.QtWidgets import QApplication, QLineEdit
 
-from app.gui import MainWindow, TAB_TITLES
+from app.gui import AccountDialog, AccountsTab, MainWindow, TAB_STYLE, TAB_TITLES
 
 
-class GuiTests(unittest.TestCase):
+class GuiTests(TempDirMixin, unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         cls.app = QApplication.instance() or QApplication([])
 
-    def test_main_window_has_five_tabs_in_workflow_order(self):
-        window = MainWindow()
-        self.addCleanup(window.close)
+    def make_config(self, temp_dir):
+        return {
+            "chrome_path": "chrome.exe",
+            "user_data_root": os.path.join(temp_dir, "chrome_user_data_dir"),
+            "db_path": os.path.join(temp_dir, "cmshopee.db"),
+            "debug_port_range": [9222, 9260],
+        }
 
-        self.assertEqual(5, window.tabs.count())
-        self.assertEqual(
-            TAB_TITLES,
-            [window.tabs.tabText(index) for index in range(window.tabs.count())],
-        )
-        self.assertEqual("就绪", window.statusBar().currentMessage())
+    def test_main_window_has_five_tabs_in_workflow_order(self):
+        with self.make_temp_dir() as temp_dir:
+            window = MainWindow(config=self.make_config(temp_dir))
+            self.addCleanup(window.close)
+
+            self.assertEqual(5, window.tabs.count())
+            self.assertEqual(
+                TAB_TITLES,
+                [window.tabs.tabText(index) for index in range(window.tabs.count())],
+            )
+            self.assertEqual("就绪", window.statusBar().currentMessage())
+            self.assertEqual(TAB_STYLE, window.tabs.styleSheet())
+            self.assertIn("min-width: 128px", window.tabs.styleSheet())
+            self.assertIn("padding: 8px 18px", window.tabs.styleSheet())
+            self.assertIn("margin-right: 8px", window.tabs.styleSheet())
+
+        self.assert_removed(temp_dir)
 
     def test_tab_switch_updates_status_bar(self):
-        window = MainWindow()
-        self.addCleanup(window.close)
+        with self.make_temp_dir() as temp_dir:
+            window = MainWindow(config=self.make_config(temp_dir))
+            self.addCleanup(window.close)
 
-        window.tabs.setCurrentIndex(2)
+            window.tabs.setCurrentIndex(2)
 
-        self.assertEqual("③ 更新shopee", window.tabs.tabText(window.tabs.currentIndex()))
-        self.assertEqual("当前：③ 更新shopee", window.statusBar().currentMessage())
+            self.assertEqual("③ 更新shopee", window.tabs.tabText(window.tabs.currentIndex()))
+            self.assertEqual("当前：③ 更新shopee", window.statusBar().currentMessage())
+
+        self.assert_removed(temp_dir)
+
+    def test_accounts_tab_lists_accounts_without_showing_password(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            accounts.create_account(
+                "主店",
+                "alias",
+                "seller.shopee.tw",
+                9222,
+                password="secret",
+                config=cfg,
+            )
+
+            window = MainWindow(config=cfg)
+            self.addCleanup(window.close)
+            tab = window.tabs.widget(TAB_TITLES.index("④ 账号管理"))
+
+            self.assertIsInstance(tab, AccountsTab)
+            self.assertEqual(1, tab.table.rowCount())
+            self.assertEqual("主店", tab.table.item(0, 0).text())
+            self.assertEqual("alias", tab.table.item(0, 1).text())
+            self.assertEqual("未知", tab.table.item(0, 4).text())
+            visible_values = [
+                tab.table.item(0, column).text()
+                for column in range(tab.table.columnCount())
+                if tab.table.item(0, column) is not None
+            ]
+            self.assertNotIn("secret", visible_values)
+
+        self.assert_removed(temp_dir)
+
+    def test_account_dialog_masks_password_field(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            account = accounts.create_account(
+                "主店",
+                "alias",
+                debug_port=9222,
+                password="secret",
+                config=cfg,
+            )
+
+            dialog = AccountDialog(account=account, config=cfg)
+            self.addCleanup(dialog.close)
+
+            self.assertEqual(QLineEdit.Password, dialog.password_edit.echoMode())
+            self.assertEqual("secret", dialog.password_edit.text())
+            self.assertIn(account.slug, dialog.user_data_dir_edit.text())
+
+        self.assert_removed(temp_dir)
+
+    def test_accounts_tab_updates_login_status_cell(self):
+        with self.make_temp_dir() as temp_dir:
+            cfg = self.make_config(temp_dir)
+            accounts.create_account("主店", "alias", debug_port=9222, config=cfg)
+            tab = AccountsTab(config=cfg)
+            self.addCleanup(tab.close)
+
+            tab._on_login_check_finished(
+                {"alias": "alias", "status": {"logged_in": True, "reason": None}}
+            )
+
+            self.assertEqual("已登录", tab.table.item(0, 4).text())
+
+        self.assert_removed(temp_dir)
 
 
 if __name__ == "__main__":