feat(order): 添加配送范围电子围栏校验功能

- 在订单创建流程中集成电子围栏校验机制
- 实现不信任前端坐标的地址表坐标验证策略
- 添加多种格式的围栏points解析支持（JSON、分号分隔等）
- 实现射线投射算法进行点在多边形内判断
- 添加自提和无需物流订单的围栏校验跳过逻辑
- 实现坐标缺失和异常情况的错误处理机制
- 添加围栏配置异常时的订单拒绝保护机制
- 创建GeoFenceUtil工具类提供完整的围栏功能支持

src/test/java/com/gxwebsoft/shop/util/GeoFenceUtilTest.java

@@ -0,0 +1,36 @@
+package com.gxwebsoft.shop.util;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class GeoFenceUtilTest {
+
+    @Test
+    void parsePoints_semicolonPairs() {
+        List<GeoFenceUtil.Point> pts = GeoFenceUtil.parsePolygonPoints("0,0;10,0;10,10;0,10");
+        assertEquals(4, pts.size());
+        assertEquals(0.0, pts.get(0).lng, 1e-9);
+        assertEquals(0.0, pts.get(0).lat, 1e-9);
+    }
+
+    @Test
+    void parsePoints_jsonArray() {
+        List<GeoFenceUtil.Point> pts = GeoFenceUtil.parsePolygonPoints("[[0,0],[10,0],[10,10],[0,10]]");
+        assertEquals(4, pts.size());
+        assertEquals(10.0, pts.get(2).lng, 1e-9);
+        assertEquals(10.0, pts.get(2).lat, 1e-9);
+    }
+
+    @Test
+    void containsInclusive_insideOutsideAndBoundary() {
+        List<GeoFenceUtil.Point> square = GeoFenceUtil.parsePolygonPoints("0,0;10,0;10,10;0,10");
+        assertTrue(GeoFenceUtil.containsInclusive(square, 5, 5), "inside");
+        assertFalse(GeoFenceUtil.containsInclusive(square, 15, 5), "outside");
+        assertTrue(GeoFenceUtil.containsInclusive(square, 0, 5), "on edge");
+        assertTrue(GeoFenceUtil.containsInclusive(square, 0, 0), "on vertex");
+    }
+}
+