refactor(auth): replace dashboard sessions with stateless tokens and session control (#6329)

* refactor(auth): replace dashboard sessions with stateless tokens

* feat(auth): harden session issuance and distributed enforcement

* fix(proxy): preserve trusted proxy compatibility defaults

* refactor: address dashboard auth review feedback

* refactor: remove classic frontend and flatten web app

controller/log.go

@@ -149,29 +149,3 @@ func GetLogsSelfStat(c *gin.Context) {
 	})
 	return
 }
-
-// DeleteHistoryLogs is the legacy synchronous log cleanup endpoint (DELETE /api/log/).
-// It deletes directly instead of going through the async system task. It is kept only
-// for the classic frontend; the default frontend uses POST /api/system-task/log-cleanup.
-// TODO: remove this handler (and its route) once the classic frontend is removed.
-func DeleteHistoryLogs(c *gin.Context) {
-	targetTimestamp, _ := strconv.ParseInt(c.Query("target_timestamp"), 10, 64)
-	if targetTimestamp == 0 {
-		c.JSON(http.StatusOK, gin.H{
-			"success": false,
-			"message": "target timestamp is required",
-		})
-		return
-	}
-	count, err := model.DeleteOldLog(c.Request.Context(), targetTimestamp, 100)
-	if err != nil {
-		common.ApiError(c, err)
-		return
-	}
-	c.JSON(http.StatusOK, gin.H{
-		"success": true,
-		"message": "",
-		"data":    count,
-	})
-	return
-}