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

tests/web/mini_program/__init__.py

@@ -0,0 +1 @@
+"""mini_program 测试包。"""

tests/web/mini_program/conftest.py

@@ -18,9 +18,9 @@ from pathlib import Path
 
 import pytest
 
-PROJECT_ROOT = Path(__file__).parent.parent.parent.parent
+from core.paths import PROJECT_ROOT, SCREENSHOTS_DIR
+
 RUNNER = Path(__file__).parent / "automator" / "runner.js"
-SCREENSHOTS_DIR = Path("output/screenshots")
 
 
 def _run_runner(project_path: str, action: str, **kwargs) -> dict:
@@ -47,12 +47,6 @@ def _run_runner(project_path: str, action: str, **kwargs) -> dict:
     return data
 
 
-@pytest.fixture
-def mini_program_config(config):
-    """小程序配置。"""
-    return config["mini_program"]
-
-
 @pytest.fixture
 def run_mini_action(mini_program_config):
     """调用 miniprogram-automator 执行一个操作并返回结果。
@@ -79,8 +73,8 @@ def run_mini_action(mini_program_config):
     return _run
 
 
-def save_failure_screenshot(name: str) -> str:
-    """保存 Python 端的失败截图（如 runner 调用超时）。"""
+def save_mini_failure_marker(name: str) -> str:
+    """保存 Python 端的失败标记文件（如 runner 调用超时）。"""
     scenario_dir = SCREENSHOTS_DIR / "mini_program"
     scenario_dir.mkdir(parents=True, exist_ok=True)
     ts = datetime.now().strftime("%Y%m%d_%H%M%S")