fix(workbench): hold refresh feedback

src/features/workbench/components/scheduled-condition-feed.tsx

@@ -10,7 +10,7 @@ import {
   XCircle
 } from "lucide-react";
 import { AnimatePresence, motion } from "motion/react";
-import { useCallback, useEffect, useMemo, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { MAP_TOOL_PANEL_SURFACE_CLASS_NAME, showMapNotice } from "@/features/map/core";
 import { isGeneratedScheduledConditionSessionId } from "../data/scheduled-conditions";
 import type {
@@ -62,6 +62,7 @@ const CONDITION_CONTENT_SURFACE_CLASS_NAME =
   "surface-reading rounded-xl border border-slate-200/70";
 const CONDITION_CONTROL_SURFACE_CLASS_NAME =
   "surface-control rounded-xl border border-slate-200/70";
+const MINIMUM_REFRESH_FEEDBACK_MS = 3_000;
 
 export type ScheduledConditionFeedPresentation =
   | "desktop-dock"
@@ -156,6 +157,7 @@ export function ScheduledConditionFeed({
   const [scheduleSubmitting, setScheduleSubmitting] = useState(false);
   const [scheduleError, setScheduleError] = useState<string | null>(null);
   const [refreshing, setRefreshing] = useState(false);
+  const refreshingRef = useRef(false);
   const mobileSheet = presentation === "mobile-sheet";
   const desktopDock = presentation === "desktop-dock";
   const compactPresentation = mobileSheet || desktopDock;
@@ -335,19 +337,32 @@ export function ScheduledConditionFeed({
   }
 
   async function handleRefresh() {
-    if (!onRefresh || refreshing) return;
+    if (!onRefresh || refreshingRef.current) return;
+    refreshingRef.current = true;
     setRefreshing(true);
+    const startedAt = Date.now();
+    let refreshError: unknown = null;
     try {
       await onRefresh();
     } catch (error) {
+      refreshError = error;
+    } finally {
+      const remainingFeedbackMs = MINIMUM_REFRESH_FEEDBACK_MS - (Date.now() - startedAt);
+      if (remainingFeedbackMs > 0) {
+        await new Promise((resolve) => window.setTimeout(resolve, remainingFeedbackMs));
+      }
+      refreshingRef.current = false;
+      setRefreshing(false);
+    }
+    if (refreshError) {
       showMapNotice({
         id: "scheduled-condition-refresh",
         tone: "error",
         title: "工况任务刷新失败",
-        message: error instanceof Error ? error.message : "暂时无法重新获取工况任务。"
+        message: refreshError instanceof Error
+          ? refreshError.message
+          : "暂时无法重新获取工况任务。"
       });
-    } finally {
-      setRefreshing(false);
     }
   }