feat: 新增 TDengine 多数据源与 MQTT v5 客户端支持

- 新增 DataSourceConfig 配置类，支持 MySQL（主）与 TDengine（时序）多数据源，使用 Druid 手动配置以兼容 Spring Boot 4.x
- 重构 MQTT 配置，从 spring-integration-mqtt 迁移至 Paho MQTT v5 原生客户端，实现消息发布/订阅与优雅关闭
- 重构 MqttMessageHandler 与 MqttProducer，适配 v5 客户端回调，优化设备状态消息处理逻辑（online/offline 字段调整）
- 新增设备修改昵称接口（PUT /api/v1/devices/{id}）与 TDengine 心跳最后在线时间查询接口
- 设备列表查询填充在线状态（Redis），增强设备管理功能
- 配置缓存预热失败时仅记录日志，避免数据库不可用导致应用启动失败
- 更新开发与生产环境配置，添加 TDengine 数据源及 MQTT 认证信息

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

@@ -30,6 +30,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
@@ -82,6 +83,18 @@ public class DeviceController {
         return Result.success();
     }
 
+    @Operation(summary = "修改设备（仅允许修改设备昵称）")
+    @PutMapping("/{id}")
+    public Result<Void> updateDevice(
+            @Parameter(description = "设备ID") @PathVariable Long id,
+            @RequestBody SnDeviceInfo device) {
+        boolean success = deviceService.updateSn(id, device.getSnName());
+        if (!success) {
+            return Result.failed("设备不存在或修改失败");
+        }
+        return Result.success();
+    }
+
     // ===================== 设备系统信息（分面板独立接口） =====================
 
     @Operation(summary = "设备基本信息")

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

@@ -1,13 +1,16 @@
 package com.youlai.boot.device.controller;
 
 import com.youlai.boot.common.result.Result;
+import com.youlai.boot.device.model.vo.DeviceHeartbeatVO;
 import com.youlai.boot.device.model.vo.DeviceOnlineVO;
 import com.youlai.boot.device.service.DeviceOnlineService;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.tags.Tag;
-import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -15,6 +18,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.sql.Timestamp;
 import java.util.List;
 import java.util.Map;
 
@@ -29,12 +33,21 @@ import java.util.Map;
 @Tag(name = "设备在线状态")
 @RestController
 @RequestMapping("/api/v1/device/online")
-@RequiredArgsConstructor
+@Slf4j
 @ConditionalOnProperty(prefix = "mqtt", name = "enabled", havingValue = "true")
 public class DeviceOnlineController {
 
     private final DeviceOnlineService deviceOnlineService;
 
+    private final JdbcTemplate tdengineJdbcTemplate;
+
+    public DeviceOnlineController(
+            DeviceOnlineService deviceOnlineService,
+            @Qualifier("tdengineJdbcTemplate") JdbcTemplate tdengineJdbcTemplate) {
+        this.deviceOnlineService = deviceOnlineService;
+        this.tdengineJdbcTemplate = tdengineJdbcTemplate;
+    }
+
     @Operation(summary = "查询单个设备在线状态")
     @GetMapping("/status")
     public Result<DeviceOnlineVO> getOnlineStatus(
@@ -49,4 +62,35 @@ public class DeviceOnlineController {
         return Result.success(deviceOnlineService.getOnlineStatusBySns(sns));
     }
 
+    @Operation(summary = "通过SN查询设备最后在线时间（TDengine心跳）")
+    @GetMapping("/heartbeat/last")
+    public Result<DeviceHeartbeatVO> getLastHeartbeat(
+            @Parameter(description = "设备序列号") @RequestParam String sn) {
+        if (sn == null || sn.isBlank()) {
+            return Result.failed("设备SN不能为空");
+        }
+        // 从超级表 device_heartbeat 中按 tag sn 取最后一条记录
+        String sql = "SELECT ts, online, ip, rssi, screen_on FROM device_heartbeat WHERE sn = ? ORDER BY ts DESC LIMIT 1";
+        try {
+            List<DeviceHeartbeatVO> list = tdengineJdbcTemplate.query(sql, (rs, rowNum) -> {
+                DeviceHeartbeatVO vo = new DeviceHeartbeatVO();
+                vo.setSn(sn);
+                Timestamp ts = rs.getTimestamp("ts");
+                vo.setLastTime(ts != null ? ts.toLocalDateTime() : null);
+                vo.setOnline(rs.getObject("online") != null ? (rs.getBoolean("online") ? 1 : 0) : null);
+                vo.setIp(rs.getString("ip"));
+                vo.setRssi(rs.getObject("rssi") != null ? rs.getInt("rssi") : null);
+                vo.setScreenOn(rs.getObject("screen_on") != null ? (rs.getBoolean("screen_on") ? 1 : 0) : null);
+                return vo;
+            }, sn);
+            if (list.isEmpty()) {
+                return Result.success(null);
+            }
+            return Result.success(list.get(0));
+        } catch (Exception e) {
+            log.error("查询设备最后在线时间失败, sn={}", sn, e);
+            return Result.failed("查询设备心跳失败: " + e.getMessage());
+        }
+    }
+
 }

src/main/java/com/youlai/boot/device/model/vo/DeviceHeartbeatVO.java

@@ -0,0 +1,36 @@
+package com.youlai.boot.device.model.vo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+/**
+ * 设备心跳（TDengine）视图对象
+ *
+ * @author TongTongStudio
+ * @since 2026/8/11
+ */
+@Schema(description = "设备心跳信息")
+@Data
+public class DeviceHeartbeatVO {
+
+    @Schema(description = "设备序列号")
+    private String sn;
+
+    @Schema(description = "最后上报时间戳")
+    private LocalDateTime lastTime;
+
+    @Schema(description = "最后在线状态(1:在线;0:离线)")
+    private Integer online;
+
+    @Schema(description = "设备 IP")
+    private String ip;
+
+    @Schema(description = "信号强度")
+    private Integer rssi;
+
+    @Schema(description = "屏幕状态(1:亮屏;0:熄屏)")
+    private Integer screenOn;
+
+}

src/main/java/com/youlai/boot/device/service/DeviceService.java

@@ -75,6 +75,14 @@ public interface DeviceService extends IService<SnDeviceInfo> {
      */
     boolean addSn(SnDeviceInfo device);
 
+    /**
+     * 更新设备信息（仅允许修改设备昵称）
+     * @param id 设备ID
+     * @param snName 设备昵称
+     * @return 是否成功
+     */
+    boolean updateSn(Long id, String snName);
+
     /**
      * 删除设备
      * @param sn 设备序列号

src/main/java/com/youlai/boot/device/service/impl/DeviceServiceImpl.java

@@ -131,6 +131,15 @@ public class DeviceServiceImpl extends ServiceImpl<DeviceMapper, SnDeviceInfo> i
         DevicePageVO devicePageVO = new DevicePageVO();
         BeanUtils.copyProperties(device, devicePageVO);
 
+        // 填充设备在线状态（Redis）
+        DeviceOnlineVO online = deviceOnlineService.getOnlineInfo(sn);
+        if (online != null) {
+            devicePageVO.setOnline(online.getOnline());
+            devicePageVO.setLastHeartbeatTime(online.getLastHeartbeatTime());
+        } else {
+            devicePageVO.setOnline(0);
+        }
+
         return devicePageVO;
     }
 
@@ -202,6 +211,24 @@ public class DeviceServiceImpl extends ServiceImpl<DeviceMapper, SnDeviceInfo> i
         return saved;
     }
 
+    @Override
+    public boolean updateSn(Long id, String snName) {
+        if (id == null) {
+            return false;
+        }
+        SnDeviceInfo device = this.getById(id);
+        if (device == null) {
+            log.warn("更新设备失败，设备不存在, id: {}", id);
+            return false;
+        }
+        device.setSnName(snName);
+        boolean updated = this.updateById(device);
+        if (!updated) {
+            log.error("更新设备失败, id: {}, snName: {}", id, snName);
+        }
+        return updated;
+    }
+
     @Override
     public boolean deleteSn(String sn) {
             return false;