feat(history): add multi-account and WhatsApp foundation

src/pages/knowledge/KnowledgePage.tsx

@@ -65,7 +65,7 @@ export function KnowledgePage() {
     <div className="p-4 md:p-6">
       <PageHeader
         title="企业知识库"
-        description={`${list.length} 条知识 · AI 回复与翻译的精准来源`}
+        description={`${list.length} 条知识 · 用于回复建议与翻译参考`}
         actions={
           <>
             <Button size="sm" variant="outline" onClick={() => setUploadDialog(true)}><Upload className="h-4 w-4" />上传文件</Button>
@@ -129,7 +129,7 @@ export function KnowledgePage() {
       {tab === 'search' && (
         <Card className="p-4">
           <div className="flex gap-2">
-            <Input placeholder="输入跨境问题，测试知识库检索与 AI 答案生成" value={searchQ} onChange={(e) => setSearchQ(e.target.value)} className="flex-1" />
+            <Input placeholder="输入问题，测试知识库检索和答案生成" value={searchQ} onChange={(e) => setSearchQ(e.target.value)} className="flex-1" />
             <Button loading={searchLoading} onClick={async () => {
               if (!searchQ.trim()) return
               setSearchLoading(true)
@@ -142,7 +142,7 @@ export function KnowledgePage() {
           {searchResult && (
             <div className="mt-4 space-y-3">
               <Card className="p-3 bg-primary-50/30">
-                <p className="text-xs font-semibold text-muted-foreground mb-1">AI 答案</p>
+                <p className="text-xs font-semibold text-muted-foreground mb-1">参考答案</p>
                 <p className="text-sm">{searchResult.answer}</p>
               </Card>
               <p className="text-xs font-semibold text-muted-foreground">命中知识 ({searchResult.hits.length})</p>
@@ -211,7 +211,7 @@ export function KnowledgePage() {
           onChange={(e) => setUploadFiles(Array.from(e.target.files || []))}
           className="block w-full rounded-md border border-input p-2 text-sm"
         />
-        <p className="mt-2 text-sm text-muted-foreground">支持 PDF、DOCX、TXT、Markdown、CSV、JSON 和 HTML，文件内容由服务端真实解析并写入知识库。</p>
+        <p className="mt-2 text-sm text-muted-foreground">支持 PDF、DOCX、TXT、Markdown、CSV、JSON 和 HTML，上传后自动解析并写入知识库。</p>
       </Dialog>
     </div>
   )