feat(frontend): add assistant delete menu to prompt editor topbar

Place a more-actions dropdown beside the assistant ID with confirmed delete that returns to the assistant list after removal.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/components/assistant-editor/prompt-editor.tsx

@@ -18,8 +18,10 @@ import {
   Database,
   Loader2,
   MessageSquareText,
+  MoreHorizontal,
   Save,
   Sparkles,
+  Trash2,
   Webhook,
   Wrench,
 } from "lucide-react";
@@ -45,6 +47,12 @@ import { SectionCard } from "@/components/editor/section-card";
 import { VisionConfigSection } from "@/components/editor/vision-config-section";
 import { TurnConfigEditor } from "@/components/turn-config-editor";
 import { Button } from "@/components/ui/button";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
 import { TopbarPortal } from "@/components/layout/topbar-portal";
 import { Input } from "@/components/ui/input";
 import {
@@ -118,6 +126,7 @@ type PromptEditorProps = {
   tools: Tool[];
   onBack: () => void;
   onSave: () => void;
+  onDelete?: () => void | Promise<void>;
   updateForm: <K extends keyof AssistantForm>(
     key: K,
     value: AssistantForm[K],
@@ -142,6 +151,7 @@ export function PromptEditor({
   tools,
   onBack,
   onSave,
+  onDelete,
   updateForm,
   handlePromptVisionEnabledChange,
   handlePromptModelChange,
@@ -171,6 +181,7 @@ export function PromptEditor({
   const [activeSection, setActiveSection] =
     useState<PromptSectionId>("conversation");
   const [debugOpen, setDebugOpen] = useState(true);
+  const [deleting, setDeleting] = useState(false);
 
   useEffect(() => {
     const container = scrollContainerRef.current;
@@ -283,6 +294,16 @@ export function PromptEditor({
     });
   }
 
+  async function handleDeleteSelect() {
+    if (!onDelete || deleting) return;
+    setDeleting(true);
+    try {
+      await onDelete();
+    } finally {
+      setDeleting(false);
+    }
+  }
+
   return (
     <>
       <TopbarPortal>
@@ -294,6 +315,42 @@ export function PromptEditor({
               onChange={(value) => updateForm("name", value)}
             />
             <AssistantIdentity assistantId={assistantId} />
+            {onDelete && (
+              <DropdownMenu>
+                <DropdownMenuTrigger asChild>
+                  <Button
+                    variant="outline"
+                    size="icon-sm"
+                    className="border-hairline-strong text-muted-foreground hover:text-foreground"
+                    disabled={!assistantId || deleting}
+                    aria-label="更多操作"
+                  >
+                    {deleting ? (
+                      <Loader2 size={15} className="animate-spin" />
+                    ) : (
+                      <MoreHorizontal size={15} />
+                    )}
+                  </Button>
+                </DropdownMenuTrigger>
+                <DropdownMenuContent
+                  align="start"
+                  className="w-32 min-w-32 rounded-xl border border-hairline bg-popover p-1"
+                >
+                  <DropdownMenuItem
+                    variant="destructive"
+                    className="rounded-lg"
+                    disabled={deleting}
+                    onSelect={(event) => {
+                      event.preventDefault();
+                      window.setTimeout(() => void handleDeleteSelect(), 0);
+                    }}
+                  >
+                    <Trash2 size={14} />
+                    删除
+                  </DropdownMenuItem>
+                </DropdownMenuContent>
+              </DropdownMenu>
+            )}
           </div>
 
           <div className="flex shrink-0 items-center gap-2">

frontend/src/components/pages/AssistantPage.tsx

@@ -639,6 +639,19 @@ export function AssistantPage(props: AssistantPageProps) {
     );
   }
 
+  async function handleDeleteCurrentAssistant() {
+    if (!editingId) return;
+    const assistantName = form.name.trim() || "未命名助手";
+    if (!window.confirm(`确认删除助手“${assistantName}”？`)) return;
+    setSaveError(null);
+    try {
+      await assistantsApi.remove(editingId);
+      router.push("/assistants");
+    } catch (error) {
+      setSaveError(error instanceof Error ? error.message : "删除失败");
+    }
+  }
+
   // ---- 外部智能体平台（Dify / FastGPT）----
   function fillAgentPlatformForm(a: Assistant): AgentPlatformForm {
     const next: AgentPlatformForm = {
@@ -1611,6 +1624,7 @@ export function AssistantPage(props: AssistantPageProps) {
       tools={tools}
       onBack={() => router.push("/assistants")}
       onSave={() => void handleSavePrompt()}
+      onDelete={() => void handleDeleteCurrentAssistant()}
       updateForm={updateForm}
       handlePromptVisionEnabledChange={handlePromptVisionEnabledChange}
       handlePromptModelChange={handlePromptModelChange}