diff --git a/sundynix-admin/src/components/TaskDetailDrawer.tsx b/sundynix-admin/src/components/TaskDetailDrawer.tsx
index 9411f17..057182f 100644
--- a/sundynix-admin/src/components/TaskDetailDrawer.tsx
+++ b/sundynix-admin/src/components/TaskDetailDrawer.tsx
@@ -132,7 +132,7 @@ export function TaskDetailDrawer({ task, onClose }: { task: AdminTask; onClose:
                 text={
                   task.status === "running" || task.status === "submitted"
                     ? "任务还在跑，轨迹要等收尾才落库（这里是复盘视图，不是实时流）"
-                    : "这次运行没有留下轨迹（可能早于轨迹落库功能上线）"
+                    : "这次运行没有留下轨迹（早于轨迹落库功能上线，或收尾时落库失败——后者会在 gateway 日志里有 [task] 告警）"
                 }
               />
             ) : (
diff --git a/sundynix-gateway/internal/handler/admin.go b/sundynix-gateway/internal/handler/admin.go
index c219ecf..52f3b8a 100644
--- a/sundynix-gateway/internal/handler/admin.go
+++ b/sundynix-gateway/internal/handler/admin.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"log"
 	"net/http"
 	"strconv"
 	"strings"
@@ -382,7 +383,6 @@ func (h *Handler) AdminSetTenantStatus(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"status": "ok"})
 }
 
-
 // AdminMembers: GET /api/v1/admin/tenants/:id/members —— 某租户成员列表。
 func (h *Handler) AdminMembers(c *gin.Context) {
 	rows, err := h.db.ListMembers(c.Request.Context(), c.Param("id"))
@@ -564,7 +564,11 @@ func (h *Handler) TestModel(c *gin.Context) {
 func (h *Handler) broadcastActive(ctx context.Context) {
 	for _, kind := range []string{contract.ConfigKindChat, contract.ConfigKindEmbedding} {
 		if cfg := h.db.ActiveConfig(ctx, kind); cfg != nil {
-			_ = h.bus.PublishConfigUpdated(kind, cfg)
+			// 广播失败 = dispatcher/mcp-go 拿不到新配置，症状是"控制台改了模型却不生效"，
+			// 而改配置的人这边一切正常。必须留痕，否则只能靠猜。
+			if err := h.bus.PublishConfigUpdated(kind, cfg); err != nil {
+				log.Printf("[admin] ⚠️ %s 配置广播失败: %v（dispatcher/mcp-go 仍在用旧配置，需重启或重试保存）", kind, err)
+			}
 		}
 	}
 }
diff --git a/sundynix-gateway/internal/handler/task_handler.go b/sundynix-gateway/internal/handler/task_handler.go
index b532b69..013eca3 100644
--- a/sundynix-gateway/internal/handler/task_handler.go
+++ b/sundynix-gateway/internal/handler/task_handler.go
@@ -16,11 +16,11 @@ import (
 	"github.com/gin-contrib/sse"
 	"github.com/gin-gonic/gin"
 
-	"github.com/sundynix/sundynix-shared/blob"
 	"github.com/sundynix/sundynix-gateway/internal/dsl"
 	"github.com/sundynix/sundynix-gateway/internal/nats"
 	"github.com/sundynix/sundynix-gateway/internal/payment"
 	"github.com/sundynix/sundynix-gateway/internal/store"
+	"github.com/sundynix/sundynix-shared/blob"
 	"github.com/sundynix/sundynix-shared/contract"
 )
 
@@ -139,7 +139,11 @@ func (h *Handler) startTokenRecorder(taskID string) {
 		func() {
 			_ = h.cache.StreamAppend(ctx, store.ChannelToken, taskID, "done", "")
 			if out.Len() > 0 {
-				_ = h.db.SaveTaskOutput(context.Background(), taskID, out.String())
+				// 失败必须出声：这是**唯一**的持久副本（Redis 流 10min 后就没了），
+				// 丢了就再也复盘不了，界面上只会显示"这次运行没有输出"。
+				if err := h.db.SaveTaskOutput(context.Background(), taskID, out.String()); err != nil {
+					log.Printf("[task] ⚠️ 输出落库失败 task=%s len=%d: %v（该次运行将无法复盘）", taskID, out.Len(), err)
+				}
 			}
 			cancel()
 		},
@@ -170,8 +174,12 @@ func (h *Handler) startExecRecorder(taskID string) {
 		func() {
 			_ = h.cache.StreamAppend(ctx, store.ChannelExec, taskID, "done", "")
 			if len(evs) > 0 {
-				if b, err := json.Marshal(evs); err == nil {
-					_ = h.db.SaveTaskTrace(context.Background(), taskID, string(b))
+				// 同上：轨迹只有这一份持久副本，静默失败会表现为"这次运行没有轨迹"。
+				b, err := json.Marshal(evs)
+				if err != nil {
+					log.Printf("[task] ⚠️ 轨迹序列化失败 task=%s events=%d: %v（轨迹将丢失）", taskID, len(evs), err)
+				} else if err := h.db.SaveTaskTrace(context.Background(), taskID, string(b)); err != nil {
+					log.Printf("[task] ⚠️ 轨迹落库失败 task=%s events=%d: %v（该次运行将无法复盘）", taskID, len(evs), err)
 				}
 			}
 			cancel()
diff --git a/sundynix-gateway/internal/middleware/audit.go b/sundynix-gateway/internal/middleware/audit.go
index 8eab759..67f826f 100644
--- a/sundynix-gateway/internal/middleware/audit.go
+++ b/sundynix-gateway/internal/middleware/audit.go
@@ -2,6 +2,7 @@ package middleware
 
 import (
 	"context"
+	"log"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -35,6 +36,10 @@ func Audit(db *store.Postgres) gin.HandlerFunc {
 		}
 		ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
 		defer cancel()
-		_ = db.AppendAudit(ctx, entry)
+		// best-effort：审计失败不阻断主流程（业务已经做完了），但必须留痕 ——
+		// 静默失败意味着敏感操作没有记录，而没人知道记录缺了。
+		if err := db.AppendAudit(ctx, entry); err != nil {
+			log.Printf("[audit] ⚠️ 审计留痕写入失败 actor=%s %s %s: %v", entry.Actor, entry.Action, entry.Path, err)
+		}
 	}
 }