dedupe canvas agent model entry

components/canvas/CanvasChatPanel.tsx

@@ -2724,10 +2724,11 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
       allModels.filter(
         (model) =>
           model.id !== "auto" &&
+          model.id !== modelsData?.agentModel?.id &&
           model.isMultimodal &&
           !VIDEO_PROVIDER_TYPES.has(model.providerType)
       ),
-    [allModels]
+    [allModels, modelsData?.agentModel?.id]
   );
   const videoOnlyModels = useMemo(
     () => visualModels.filter((model) => VIDEO_PROVIDER_TYPES.has(model.providerType)),
@@ -2775,7 +2776,6 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     SMART_AUTO_MODEL;
   const agentDisplayName =
     currentModel?.displayName || selectDisplayModel?.displayName || "Agent模式";
-  const agentAvatarUrl = currentModel?.avatarUrl || selectDisplayModel?.avatarUrl || null;
   const videoFrameSlots = useMemo(() => {
     if (!isVideoModel || !videoParams) return [] as string[];
     if (videoParams.mode === "first-last-frame") return ["首帧", "尾帧"] as string[];
@@ -8857,31 +8857,6 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
             </div>
 
             <div className="flex items-center gap-2 flex-shrink-0">
-              {activeComposerMode === "agent" ? (
-                <div
-                  className="h-8 w-8 overflow-hidden rounded-full border border-[#cfd4dc] bg-white flex items-center justify-center"
-                  title={agentDisplayName}
-                  aria-label={agentDisplayName}
-                >
-                  {agentAvatarUrl ? (
-                    <img
-                      src={buildPreviewImageUrl(agentAvatarUrl, 64)}
-                      alt={agentDisplayName}
-                      className="h-full w-full object-cover"
-                      loading="lazy"
-                      decoding="async"
-                      onError={(event) => {
-                        if (event.currentTarget.src !== agentAvatarUrl) {
-                          event.currentTarget.src = agentAvatarUrl;
-                        }
-                      }}
-                    />
-                  ) : (
-                    <Sparkles className="h-4 w-4 text-[#8b95a7]" />
-                  )}
-                </div>
-              ) : null}
-
               {activeComposerMode === "image" ? (
                 <Button
                   variant="ghost"