fix: isolate startup tools and preview dialogs

frontend/src/components/assistant-editor/debug-preview.tsx

@@ -645,6 +645,8 @@ function DebugVoicePanel({
   const recording = status === "connecting" || status === "connected";
   const [textDraft, setTextDraft] = useState("");
   const [inputMode, setInputMode] = useState<DebugInputMode>("mic");
+  const [clientDialogContainer, setClientDialogContainer] =
+    useState<HTMLDivElement | null>(null);
   const inChatView = view === "chat" && (!SHOW_VOICE_VIZ || showTranscript);
   const idleOrFailed = status === "idle" || status === "failed";
   const showIdleHub =
@@ -682,10 +684,17 @@ function DebugVoicePanel({
   ]);
 
   return (
-    <div className="flex min-h-0 flex-1 flex-col">
+    <div
+      ref={setClientDialogContainer}
+      className="relative isolate flex min-h-0 flex-1 flex-col overflow-hidden"
+    >
       {/* 后端 TTS 音频经 WebRTC 媒体流过来,挂这里播放 */}
       <audio ref={audioRef} autoPlay playsInline className="hidden" />
-      <ClientMessageDialog preview={preview} />
+      <ClientMessageDialog
+        preview={preview}
+        container={clientDialogContainer}
+        contained
+      />
       {vision && !showIdleHub ? (
         <DebugVisionWorkspace
           view={view}

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

@@ -135,13 +135,6 @@ export function PromptEditor({
           ]
         : otherActions,
     });
-    if (
-      enabled &&
-      defaultToolId &&
-      !form.toolIds.includes(defaultToolId)
-    ) {
-      updateForm("toolIds", [...form.toolIds, defaultToolId]);
-    }
   }
 
   function updateOpeningMessage(
@@ -254,12 +247,7 @@ export function PromptEditor({
                       value={openingMessage.toolId}
                       options={showMessageTools}
                       noneLabel="请选择 show_message 工具"
-                      onChange={(toolId) => {
-                        updateOpeningMessage({ toolId });
-                        if (toolId && !form.toolIds.includes(toolId)) {
-                          updateForm("toolIds", [...form.toolIds, toolId]);
-                        }
-                      }}
+                      onChange={(toolId) => updateOpeningMessage({ toolId })}
                     />
                     {showMessageTools.length === 0 && (
                       <p className="text-xs leading-5 text-muted-foreground">
@@ -308,7 +296,8 @@ export function PromptEditor({
                       />
                     </label>
                     <p className="text-xs leading-5 text-muted-foreground">
-                      弹窗不可通过关闭按钮、Esc 或点击外部跳过；失败时将结束本次通话。
+                      弹窗不可跳过；失败时将结束本次通话。该工具仅用于开场，
+                      如需允许模型后续调用，请另外在“工具”区域勾选。
                     </p>
                   </div>
                 )}