fix(log): hide admin identity in user-visible management logs

Admin username/ID was embedded directly into the log Content for
quota changes and forced 2FA disable, leaking the operator's
identity to the target user via their own usage log page.

Move operator info into Other.admin_info so formatUserLogs strips
it for non-admin viewers, and render it in the expand panel only
for admins as "操作管理员".

Closes #4301

controller/twofa.go

@@ -2,7 +2,6 @@ package controller
 
 import (
 	"errors"
-	"fmt"
 	"net/http"
 	"strconv"
 
@@ -542,10 +541,15 @@ func AdminDisable2FA(c *gin.Context) {
 		return
 	}
 
-	// 记录操作日志
+	// 记录操作日志：管理员身份通过 admin_info 传递，避免在非管理员可见的日志内容中泄露。
 	adminId := c.GetInt("id")
-	model.RecordLog(userId, model.LogTypeManage,
-		fmt.Sprintf("管理员(ID:%d)强制禁用了用户的两步验证", adminId))
+	adminName := c.GetString("username")
+	adminInfo := map[string]interface{}{
+		"admin_id":       adminId,
+		"admin_username": adminName,
+	}
+	model.RecordLogWithAdminInfo(userId, model.LogTypeManage,
+		"管理员强制禁用了用户的两步验证", adminInfo)
 
 	c.JSON(http.StatusOK, gin.H{
 		"success": true,