优化部分细节

src/components/AIChat/index.vue

@@ -132,7 +132,7 @@
               </a-avatar>
               <div>
                 <div class="welcome-card__title">我是小妍助理</div>
-                <div class="welcome-card__text">可以开始输入问题。</div>
+                <div class="welcome-card__text">可以让我做任何事情哦~</div>
               </div>
               <div class="welcome-prompts">
                 <button
@@ -209,10 +209,10 @@
 
         <div class="composer-wrap">
           <div class="composer">
-            <input ref="fileInput" type="file" accept="image/png,image/jpeg,image/jpg,image/gif" multiple hidden @change="handleFileInput" />
+            <input ref="fileInput" type="file" accept="image/png,image/jpeg,image/jpg" multiple hidden @change="handleFileInput" />
             <a-textarea
               v-model="input"
-              placeholder="请输入"
+              placeholder="输入文字或图片"
               :max-length="1000"
               :auto-size="{ minRows: 1, maxRows: 5 }"
               allow-clear