对话附件可选类型收敛，会话搜索框去掉 small 尺寸

ai-electron/frontend/src/ai/components/ChatComposer.vue

@@ -59,7 +59,7 @@
           模板
         </button>
 
-        <!-- 附件：选择即上传（文档/表格，图片音视频不支持） -->
+        <!-- 附件：选择即上传；支持 txt/md/json/pdf/doc/docx/csv/xls/xlsx，图片音视频不支持 -->
         <button
           class="ai-composer__tpl"
           type="button"
@@ -74,7 +74,7 @@
           ref="fileRef"
           class="ai-composer__file"
           type="file"
-          accept=".txt,.md,.log,.json,.xml,.yaml,.yml,.ini,.sql,.tsv,.pdf,.doc,.docx,.rtf,.odt,.wps,.html,.htm,.eml,.csv,.xls,.xlsx"
+          accept=".txt,.md,.json,.pdf,.doc,.docx,.csv,.xls,.xlsx"
           @change="onFilePicked"
         />
 

ai-electron/frontend/src/ai/components/SessionList.vue

@@ -1,7 +1,7 @@
 <template>
   <aside class="ai-sessions">
     <div class="ai-sessions__head">
-      <a-input v-model:value="localKeyword" class="ai-sessions__search" size="small" allow-clear placeholder="搜索会话">
+      <a-input v-model:value="localKeyword" class="ai-sessions__search" allow-clear placeholder="搜索会话">
         <template #prefix><Icon icon="mdi:magnify" :size="14" /></template>
       </a-input>
       <a-button class="ai-sessions__new" type="primary" block @click="emit('create')">