添加生成按钮提示，确保用户输入内容并上传图片

@@ -73,8 +73,13 @@ const InputBar: React.FC<InputBarProps> = ({ onGenerate, isGenerating, incomingP
   };
 
   const handleGenerate = async () => {
-    if (!prompt.trim() || isGenerating || isSubmittingLocal) return;
+    if (isGenerating || isSubmittingLocal) return;
     
+    if (!prompt.trim()) {
+      alert("请描述您的创意内容");
+      return;
+    }
+
     if (isVideoMode && !imageFile) {
         alert("请上传一张图片以生成视频。");
         return;
@@ -312,10 +317,10 @@ const InputBar: React.FC<InputBarProps> = ({ onGenerate, isGenerating, incomingP
               
               <button
                 onClick={handleGenerate}
-                disabled={!prompt.trim() || isGenerating || isSubmittingLocal || (isVideoMode && !imageFile)}
+                disabled={isGenerating || isSubmittingLocal}
                 className={`
                   flex items-center justify-center w-10 h-10 md:w-12 md:h-12 rounded-full transition-all duration-200
-                  ${(prompt.trim() && !isGenerating && (!isVideoMode || imageFile))
+                  ${(!isGenerating && !isSubmittingLocal)
                     ? 'bg-black dark:bg-white text-white dark:text-black hover:scale-105 active:scale-95 shadow-md' 
                     : 'bg-gray-200 dark:bg-gray-700 text-gray-400 cursor-not-allowed'}
                 `}