仪表盘功能完善

backend-single/src/main/java/com/emotion/dto/response/DashboardStatsResponse.java

@@ -41,6 +41,12 @@ public class DashboardStatsResponse {
     @Schema(description = "数据更新时间")
     private LocalDateTime updateTime;
 
+    @Schema(description = "用户增长趋势数据")
+    private List<UserGrowthTrend> userGrowthTrends;
+
+    @Schema(description = "最近登录用户")
+    private List<RecentLogin> recentLogins;
+
     /**
      * 用户统计
      */
@@ -165,4 +171,51 @@ public class DashboardStatsResponse {
         @Schema(description = "额外数据")
         private Map<String, Object> extraData;
     }
+
+    /**
+     * 用户增长趋势
+     */
+    @Data
+    @Builder
+    @NoArgsConstructor
+    @AllArgsConstructor
+    @Schema(description = "用户增长趋势")
+    public static class UserGrowthTrend {
+        @Schema(description = "日期")
+        private String date;
+
+        @Schema(description = "新增用户数")
+        private Long newUsers;
+
+        @Schema(description = "累计用户数")
+        private Long totalUsers;
+    }
+
+    /**
+     * 最近登录用户
+     */
+    @Data
+    @Builder
+    @NoArgsConstructor
+    @AllArgsConstructor
+    @Schema(description = "最近登录用户")
+    public static class RecentLogin {
+        @Schema(description = "用户ID")
+        private String userId;
+
+        @Schema(description = "用户名")
+        private String username;
+
+        @Schema(description = "昵称")
+        private String nickname;
+
+        @Schema(description = "头像")
+        private String avatar;
+
+        @Schema(description = "登录时间")
+        private LocalDateTime loginTime;
+
+        @Schema(description = "登录时间描述")
+        private String timeDescription;
+    }
 }