refactor(tests): restructure into layered POM architecture with Allure reporting

- Split framework into core/ (config, logger, db, driver factories, screenshot,
  allure integration) and pages/ (PO layer: base/admin/driver); flatten test
  files per platform (web/admin, app/driver_android, cross_end)
- Slim root conftest.py 656 -> ~100 lines: drop inline CN HTML report, add
  Allure severity mapping (p0/p1/p2 -> blocker/normal/minor) and
  environment.properties; support both tests.*-prefixed and bare imports
- Preserve TC-D2S-001/002 cross-end E2E cases with business logic unchanged,
  add allure epic/feature/story/step annotations
- Deduplicate: single makereport hook, shared failure-screenshot helpers,
  single SCREENSHOTS_DIR constant; deterministic auth-state role loading
- Move DB credentials from db_helper.py into test_config.yaml (database section)
- Move pytest.ini to repo root; switch reporting to allure-pytest
  (drop pytest-html/junitxml); update requirements.txt accordingly
- Delete deprecated scaffolding: test_freight_full_flow + 6 stale page
  objects, iOS/shipper empty shells, dead utils
- Fix flaky vxe-table action-row wait: wait for a visible td instead of
  hidden placeholder rows (fixed shipper-payment timeouts)
- Verified end-to-end against live env: both E2E cases pass (2 passed 3m12s);
  run artifacts (logs/screenshots/allure) included per repo convention

output/allure-report/index.html

@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html dir="ltr" lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="allure-report-uuid" content="dd4e24f8-cb20-4a27-b2e2-df1fd66f4197">
+    <title>Allure Report</title>
+    <link rel="icon" href="assets/favicon-BDLHVmV7.ico">
+    <!-- allure-core-head:start -->
+    <!-- allure-core-head:end -->
+</head>
+<body>
+    <div id="alert"></div>
+    <div id="content">
+        <span class="spinner">
+            <span class="spinner__circle"></span>
+        </span>
+    </div>
+    <div id="popup"></div>
+    <!-- allure-core-body:start -->
+    <script>
+        window.__allureCoreLoaded = new Promise(function (resolve, reject) {
+        window.__allureResolveCoreLoaded = resolve;
+        window.__allureRejectCoreLoaded = reject;
+    });
+    </script>
+    <script src="assets/index-BraRl9ss.js"></script>
+    <script>
+        if (typeof window.__allureResolveCoreLoaded === "function") {
+            window.__allureResolveCoreLoaded([]);
+        }
+    </script>
+    <!-- allure-core-body:end -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-FVWC4GKEYS"></script>
+    <script>
+        window.dataLayer = window.dataLayer || [];
+        function gtag(){dataLayer.push(arguments);}
+        gtag('js', new Date());
+        gtag('config', 'G-FVWC4GKEYS', {
+          'allureVersion': '2.43.0',
+          'reportUuid': 'dd4e24f8-cb20-4a27-b2e2-df1fd66f4197',
+          'single_file': false
+        });
+    </script>
+</body>
+</html>