diff --git a/web/pages/Assistants.tsx b/web/pages/Assistants.tsx
index ef3d0f2..978fc3d 100644
--- a/web/pages/Assistants.tsx
+++ b/web/pages/Assistants.tsx
@@ -1166,6 +1166,7 @@ export const DebugDrawer: React.FC<{
   const handleSend = async () => {
     if (!inputText.trim()) return;
     const userMsg = inputText;
+    assistantDraftIndexRef.current = null;
     setMessages(prev => [...prev, { role: 'user', text: userMsg }]);
     setInputText('');
     setIsLoading(true);
@@ -1189,7 +1190,7 @@ export const DebugDrawer: React.FC<{
     }
   };
 
-  const fetchRuntimeMetadata = async (): Promise<Record<string, any>> => {
+  const buildLocalResolvedRuntime = () => {
     const warnings: string[] = [];
     const services: Record<string, any> = {};
 
@@ -1256,6 +1257,11 @@ export const DebugDrawer: React.FC<{
       },
     };
 
+    return localResolved;
+  };
+
+  const fetchRuntimeMetadata = async (): Promise<Record<string, any>> => {
+    const localResolved = buildLocalResolvedRuntime();
     setResolvedConfigView(JSON.stringify(localResolved, null, 2));
     return localResolved.sessionStartMetadata;
   };
@@ -1380,6 +1386,10 @@ export const DebugDrawer: React.FC<{
           setMessages((prev) => {
             const idx = assistantDraftIndexRef.current;
             if (idx === null || !prev[idx] || prev[idx].role !== 'model') {
+              const last = prev[prev.length - 1];
+              if (last?.role === 'model' && last.text === delta) {
+                return prev;
+              }
               const next = [...prev, { role: 'model' as const, text: delta }];
               assistantDraftIndexRef.current = next.length - 1;
               return next;
@@ -1401,7 +1411,17 @@ export const DebugDrawer: React.FC<{
               next[idx] = { ...next[idx], text: finalText || next[idx].text };
               return next;
             }
-            return finalText ? [...prev, { role: 'model', text: finalText }] : prev;
+            if (!finalText) return prev;
+            const last = prev[prev.length - 1];
+            if (last?.role === 'model') {
+              if (last.text === finalText) return prev;
+              if (finalText.startsWith(last.text) || last.text.startsWith(finalText)) {
+                const next = [...prev];
+                next[next.length - 1] = { ...last, text: finalText };
+                return next;
+              }
+            }
+            return [...prev, { role: 'model', text: finalText }];
           });
           setIsLoading(false);
           return;
@@ -1436,6 +1456,12 @@ export const DebugDrawer: React.FC<{
     });
   };
 
+  useEffect(() => {
+    if (!isOpen) return;
+    const localResolved = buildLocalResolvedRuntime();
+    setResolvedConfigView(JSON.stringify(localResolved, null, 2));
+  }, [isOpen, assistant, voices, llmModels, asrModels]);
+
   const TranscriptionLog = () => (
     <div ref={scrollRef} className="flex-1 overflow-y-auto space-y-4 p-2 border border-white/5 rounded-md bg-black/20 min-h-0">
         {messages.length === 0 && <div className="text-center text-muted-foreground text-xs py-4">暂无转写记录</div>}