chore: 移除人群聚集检测算法预置

- SQL初始化脚本移除 crowd_detection
- Java预置算法移除 crowd_detection
- 与边缘端保持一致，仅保留2个算法

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiAlgorithmServiceImpl.java

@@ -34,6 +34,7 @@ public class AiAlgorithmServiceImpl implements IAiAlgorithmService {
 
     /**
      * 预置算法定义，启动时自动校正数据库中的乱码数据
+     * 注意：仅包含边缘端实际实现的算法
      */
     private static final Map<String, String[]> PRESET_ALGORITHMS = new HashMap<>();
     static {
@@ -46,10 +47,11 @@ public class AiAlgorithmServiceImpl implements IAiAlgorithmService {
                 "周界入侵检测", "person", "检测人员进入指定区域",
                 "{\"cooldown_seconds\":{\"type\":\"int\",\"default\":120,\"min\":0},\"confirm_seconds\":{\"type\":\"int\",\"default\":5,\"min\":1}}"
         });
-        PRESET_ALGORITHMS.put("crowd_detection", new String[]{
-                "人群聚集检测", "person", "检测区域内人员数量是否超过阈值",
-                "{\"max_count\":{\"type\":\"int\",\"default\":10,\"min\":1},\"cooldown_seconds\":{\"type\":\"int\",\"default\":300,\"min\":0}}"
-        });
+        // 人群聚集检测暂时注释，边缘端未启用
+        // PRESET_ALGORITHMS.put("crowd_detection", new String[]{
+        //         "人群聚集检测", "person", "检测区域内人员数量是否超过阈值",
+        //         "{\"max_count\":{\"type\":\"int\",\"default\":10,\"min\":1},\"cooldown_seconds\":{\"type\":\"int\",\"default\":300,\"min\":0}}"
+        // });
     }
 
     @PostConstruct