refactor(pages): 引入 Page Object 模式重构全部页面模块，变量统一为 snake_case

将原始 Selenium 操作脚本重构为三层 Page Object 架构：
- Page Objects（LoginPage/ReserveView/RecordsView/MainShell）
- Component Objects（Overlay 基类 + SeatMapOverlay/ReserveResultDialog 等对话框）
- Flow 状态机（ReserveFlow/CheckinFlow/RenewFlow）
- Services（CaptchaHandler/ReserveValidator/RecordChecker）

变量命名统一为 snake_case，方法名保持 camelCase，类名保持 PascalCase。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/pages/__init__.py

@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+"""
+Copyright (c) 2026 KenanZhu.
+All rights reserved.
+
+This software is provided "as is", without any warranty of any kind.
+You may use, modify, and distribute this file under the terms of the MIT License.
+See the LICENSE file for details.
+"""
+from pages.AutoLibPages import AutoLibPages
+from pages.LoginPage import LoginPage
+from pages.MainShell import MainShell
+from pages.ReserveView import ReserveView
+from pages.RecordsView import RecordsView
+from pages._dialogs import (
+    SeatMapOverlay,
+    TimeSelectDialog,
+    ReserveResultDialog,
+    CheckinResultDialog,
+    RenewDialog,
+)
+
+__all__ = [
+    "AutoLibPages",
+    "LoginPage",
+    "MainShell",
+    "ReserveView",
+    "RecordsView",
+    "SeatMapOverlay",
+    "TimeSelectDialog",
+    "ReserveResultDialog",
+    "CheckinResultDialog",
+    "RenewDialog",
+]