feat: 移除DDT模式的支持，改用POM模式

- 删除 data_loader 数据驱动加载器。
- 删除 test_keyword_sample 测试执行代码
- 新增 base_page

[DDT模式极大的限制了灵活性，增加了代码的编写难度，另外项目使用者都会编码故而转用只针对POM模式进行优化]

tests/test_finder_converter.py

@@ -0,0 +1,87 @@
+#!/usr/bin/env python
+# coding=utf-8
+
+"""
+@author: CNWei,ChenWei
+@Software: PyCharm
+@contact: t6g888@163.com
+@file: test_finder_converter
+@date: 2026/1/20 15:40
+@desc: 测试 utils/finder.py 中的 FinderConverter 逻辑
+"""
+
+import pytest
+from appium.webdriver.common.appiumby import AppiumBy
+from utils.finder import by_converter, register_custom_finder, converter
+
+class TestFinderConverter:
+
+    def setup_method(self):
+        """每个测试用例开始前重置 converter 状态"""
+        converter.clear_custom_finders()
+
+    def teardown_method(self):
+        """每个测试用例结束后重置 converter 状态"""
+        converter.clear_custom_finders()
+
+    @pytest.mark.parametrize("input_by, expected", [
+        ("id", "id"),
+        ("xpath", "xpath"),
+        ("link text", "link text"),
+        ("aid", AppiumBy.ACCESSIBILITY_ID),
+        ("class", AppiumBy.CLASS_NAME),
+        ("css", AppiumBy.CSS_SELECTOR),
+        ("uiautomator", AppiumBy.ANDROID_UIAUTOMATOR),
+        ("predicate", AppiumBy.IOS_PREDICATE),
+        ("chain", AppiumBy.IOS_CLASS_CHAIN),
+    ])
+    def test_standard_and_shortcuts(self, input_by, expected):
+        """测试标准定位方式和简写"""
+        assert by_converter(input_by) == expected
+
+    @pytest.mark.parametrize("input_by, expected", [
+        ("ID", "id"),
+        (" Id ", "id"),
+        ("accessibility_id", AppiumBy.ACCESSIBILITY_ID),
+        ("accessibility-id", AppiumBy.ACCESSIBILITY_ID),
+        ("-ios class chain", AppiumBy.IOS_CLASS_CHAIN),
+        (" -Ios-Class-Chain ", AppiumBy.IOS_CLASS_CHAIN),
+        ("UI_AUTOMATOR", AppiumBy.ANDROID_UIAUTOMATOR),
+    ])
+    def test_normalization(self, input_by, expected):
+        """测试归一化容错 (大小写、空格、下划线、横杠)"""
+        assert by_converter(input_by) == expected
+
+    def test_custom_registration(self):
+        """测试自定义注册功能"""
+        register_custom_finder("my_text", "-android uiautomator")
+        assert by_converter("my_text") == "-android uiautomator"
+        
+        # 测试注册后归一化依然生效
+        assert by_converter("MY_TEXT") == "-android uiautomator"
+
+    def test_reset_functionality(self):
+        """测试重置功能"""
+        register_custom_finder("temp_key", "xpath")
+        assert by_converter("temp_key") == "xpath"
+        
+        converter.clear_custom_finders()
+        
+        with pytest.raises(ValueError, match="Unsupported locator strategy"):
+            by_converter("temp_key")
+
+    def test_invalid_strategy(self):
+        """测试不支持的定位策略"""
+        with pytest.raises(ValueError, match="Unsupported locator strategy"):
+            by_converter("unknown_strategy")
+
+    def test_invalid_types(self):
+        """测试非法类型输入"""
+        with pytest.raises(ValueError, match="Invalid selector type"):
+            by_converter(123)  # type: ignore
+
+        with pytest.raises(ValueError, match="Invalid selector type"):
+            by_converter(None) # type: ignore
+
+if __name__ == "__main__":
+    pytest.main(["-v", __file__])