feat: 重构测试框架 — 覆盖 6 端 (管理端 + 小程序 + 4 个移动端)

目录结构:
  tests/web/admin/       管理端 (Playwright)
  tests/web/mini_program/ 司机端小程序 (Playwright/微信 WebView)
  tests/app/driver_android/  司机安卓 (Appium)
  tests/app/shipper_android/ 货主安卓 (Appium)
  tests/app/driver_ios/      司机苹果 (Appium)
  tests/app/shipper_ios/     货主苹果 (Appium)

公共模块:
  tests/app/_shared.py       driver+ensure_logged_in 工厂
  tests/app/_base_page.py    App Page Object 基类

配置:
  test_config.yaml 拆分为 6 个独立 section + 货主账号

tests/app/driver_android/conftest.py

@@ -0,0 +1,27 @@
+"""司机安卓端 fixture — Appium + 登录态复用。"""
+
+import pytest
+from tests.app._shared import create_driver, make_ensure_logged_in, save_failure_screenshot
+
+from tests.app._shared import pytest_runtest_makereport  # noqa: F401 — report hook
+
+
+@pytest.fixture
+def driver(driver_android_config, request):
+    """司机安卓端 driver (noReset=true)。"""
+    cfg = driver_android_config
+    d = None
+    try:
+        d = create_driver(cfg, platform="android")
+        yield d
+        save_failure_screenshot(d, cfg, "android", request)
+    finally:
+        if d is not None:
+            d.quit()
+
+
+@pytest.fixture
+def ensure_logged_in(driver_android_config, config):
+    """确保已登录态（司机角色）。"""
+    fn = make_ensure_logged_in(driver_android_config, config, account_role="driver")
+    return lambda d: fn(d)