feat(ops): timeline 接口 deviceId 改为可选，支持全设备查询

不传 deviceId 时查询该日期所有设备的轨迹记录，复用
selectByDateAndDevice 的 LIMIT 5000 安全上限。

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/service/trajectory/dto/TrajectoryTimelineReqDTO.java

@@ -16,8 +16,7 @@ import java.time.LocalDate;
 @Data
 public class TrajectoryTimelineReqDTO {
 
-    @Schema(description = "设备ID", requiredMode = Schema.RequiredMode.REQUIRED, example = "31")
-    @NotNull(message = "设备ID不能为空")
+    @Schema(description = "设备ID（不传=全部设备）", example = "31")
     private Long deviceId;
 
     @Schema(description = "查询日期", requiredMode = Schema.RequiredMode.REQUIRED, example = "2026-03-30")