feat(device): 添加设备策略信息管理功能

新增设备策略信息表 sys_sn_device_policy 及对应实体、Mapper、Converter、VO、Req 模型，并在设备端、家属端、管理端分别提供策略查询、全量更新和单独开关设置接口。同时修正设备菜单按钮权限命名（add/edit → create/update），并调整删除设备与解绑接口的权限和返回值。

src/main/java/com/youlai/boot/device/controller/MobileController.java

@@ -22,8 +22,13 @@ import com.youlai.boot.device.model.req.SnSecurityInfoReq;
 import com.youlai.boot.device.model.req.SnOtherInfoReq;
 import com.youlai.boot.device.model.req.SnLocationReq;
 import com.youlai.boot.device.model.entity.SnLocation;
+import com.youlai.boot.device.model.entity.SnDevicePolicy;
 import com.youlai.boot.device.model.entity.SnScreenshot;
+import com.youlai.boot.device.model.req.DevicePolicyReq;
+import com.youlai.boot.device.model.req.DevicePolicyToggleReq;
 import com.youlai.boot.device.model.vo.DeveloperOptionsVO;
+import com.youlai.boot.device.model.vo.DevicePolicyVO;
+import com.youlai.boot.device.converter.DevicePolicyConverter;
 import com.youlai.boot.device.service.*;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
@@ -68,6 +73,8 @@ public class MobileController {
     private final NetworkInfoService networkInfoService;
     private final SecurityInfoService securityInfoService;
     private final OtherInfoService otherInfoService;
+    private final DevicePolicyService devicePolicyService;
+    private final DevicePolicyConverter devicePolicyConverter;
 
     private final Logger logger = LoggerFactory.getLogger(MobileController.class);
 
@@ -565,4 +572,100 @@ public class MobileController {
             return Result.failed("上传应用图标失败: " + e.getMessage());
         }
     }
+
+    // ===================== 设备策略信息（设备端） =====================
+
+    @Operation(summary = "获取设备策略信息", description = "SN 合法且无记录时自动新建默认策略（默认全开）")
+    @GetMapping("/get_device_policy")
+    public Result<DevicePolicyVO> getDevicePolicy(
+            @RequestHeader(value = "X-Device-SN") String sn
+    ) {
+        try {
+            if (sn == null || sn.trim().isEmpty()) {
+                return Result.failed("设备序列号不能为空");
+            }
+            SnDevicePolicy policy = devicePolicyService.getOrInitBySn(sn);
+            if (policy == null) {
+                return Result.failed("设备SN不合法或不存在");
+            }
+            return Result.success(devicePolicyConverter.toVo(policy));
+        } catch (Exception e) {
+            logger.error("getDevicePolicy error, sn: {}", sn, e);
+            return Result.failed("获取设备策略失败: " + e.getMessage());
+        }
+    }
+
+    @Operation(summary = "上传/全量设置设备策略信息", description = "SN 合法且无记录时新建，存在时更新（空字段保持原值）")
+    @PostMapping("/update_device_policy")
+    public Result<Void> updateDevicePolicy(
+            @RequestHeader(value = "X-Device-SN") String sn,
+            @RequestBody DevicePolicyReq req
+    ) {
+        try {
+            if (sn == null || sn.trim().isEmpty()) {
+                return Result.failed("设备序列号不能为空");
+            }
+            if (req == null) {
+                return Result.failed("策略信息不能为空");
+            }
+            SnDevicePolicy policy = new SnDevicePolicy();
+            policy.setSerialno(sn);
+            copyPolicy(req, policy);
+            boolean success = devicePolicyService.saveOrUpdateBySn(sn, policy);
+            if (!success) {
+                return Result.failed("保存设备策略失败（设备SN不合法或参数异常）");
+            }
+            logger.info("设备策略上传成功, sn: {}", sn);
+            return Result.success();
+        } catch (Exception e) {
+            logger.error("updateDevicePolicy error, sn: {}", sn, e);
+            return Result.failed("上传设备策略失败: " + e.getMessage());
+        }
+    }
+
+    @Operation(summary = "单独设置设备策略开关", description = "通过 field 指定策略字段，value 设置 0/1")
+    @PostMapping("/update_device_policy_toggle")
+    public Result<Void> toggleDevicePolicy(
+            @RequestHeader(value = "X-Device-SN") String sn,
+            @RequestBody DevicePolicyToggleReq req
+    ) {
+        try {
+            if (sn == null || sn.trim().isEmpty()) {
+                return Result.failed("设备序列号不能为空");
+            }
+            if (req == null || req.getField() == null || req.getValue() == null) {
+                return Result.failed("field 与 value 不能为空");
+            }
+            boolean success = devicePolicyService.updateSingleBySn(sn, req.getField(), req.getValue());
+            if (!success) {
+                return Result.failed("设置设备策略失败（设备SN不合法或字段不支持）");
+            }
+            return Result.success();
+        } catch (Exception e) {
+            logger.error("toggleDevicePolicy error, sn: {}", sn, e);
+            return Result.failed("设置设备策略失败: " + e.getMessage());
+        }
+    }
+
+    private void copyPolicy(DevicePolicyReq src, SnDevicePolicy target) {
+        target.setUsbData(src.getUsbData());
+        target.setTimeSetting(src.getTimeSetting());
+        target.setStorageCard(src.getStorageCard());
+        target.setFactoryReset(src.getFactoryReset());
+        target.setWifiHotspot(src.getWifiHotspot());
+        target.setBluetoothSwitch(src.getBluetoothSwitch());
+        target.setWallpaper(src.getWallpaper());
+        target.setNotificationBar(src.getNotificationBar());
+        target.setStatusBarPullDown(src.getStatusBarPullDown());
+        target.setSystemNavBarShow(src.getSystemNavBarShow());
+        target.setSystemNavBarSetting(src.getSystemNavBarSetting());
+        target.setNavBarOptions(src.getNavBarOptions());
+        target.setBluetoothFunction(src.getBluetoothFunction());
+        target.setOtaUpgrade(src.getOtaUpgrade());
+        target.setAppInstall(src.getAppInstall());
+        target.setAutoRotate(src.getAutoRotate());
+        target.setAutoBrightness(src.getAutoBrightness());
+        target.setEyeProtection(src.getEyeProtection());
+        target.setDarkMode(src.getDarkMode());
+    }
 }