feat(frontend): 合并消息列表栈并保留 YAML 物化

frontend/src/components/workspace/messages/message-list-item.tsx

@@ -1,7 +1,7 @@
 import type { Message } from "@langchain/langgraph-sdk";
 import { FileIcon, Loader2Icon } from "lucide-react";
 import { useParams } from "next/navigation";
-import { memo, useMemo, type ImgHTMLAttributes } from "react";
+import { memo, useMemo, useState, type ImgHTMLAttributes } from "react";
 import rehypeKatex from "rehype-katex";
 
 import { Loader } from "@/components/ai-elements/loader";
@@ -18,6 +18,7 @@ import {
 } from "@/components/ai-elements/reasoning";
 import { Task, TaskTrigger } from "@/components/ai-elements/task";
 import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
 import { resolveArtifactURL } from "@/core/artifacts/utils";
 import { useI18n } from "@/core/i18n/hooks";
 import {
@@ -28,6 +29,7 @@ import {
   type FileInMessage,
 } from "@/core/messages/utils";
 import { useRehypeSplitWordsIntoSpans } from "@/core/rehype";
+import { materializeSkillYaml } from "@/core/skills";
 import { humanMessagePlugins } from "@/core/streamdown";
 import { cn } from "@/lib/utils";
 
@@ -262,6 +264,11 @@ function isImageFile(filename: string): boolean {
   return IMAGE_EXTENSIONS.includes(getFileExt(filename));
 }
 
+function isYamlFile(filename: string): boolean {
+  const ext = getFileExt(filename);
+  return ext === "yaml" || ext === "yml";
+}
+
 /**
  * Format bytes to human-readable size string
  */
@@ -312,6 +319,11 @@ function RichFileCard({
   const { t } = useI18n();
   const isUploading = file.status === "uploading";
   const isImage = isImageFile(file.filename);
+  const isYaml = isYamlFile(file.filename);
+  const [isMaterializing, setIsMaterializing] = useState(false);
+  const [materializeMessage, setMaterializeMessage] = useState<string | null>(
+    null,
+  );
 
   if (isUploading) {
     return (
@@ -344,6 +356,28 @@ function RichFileCard({
 
   const fileUrl = resolveArtifactURL(file.path, threadId);
 
+  const handleMaterializeYaml = async () => {
+    if (!isYaml || isMaterializing) return;
+    setIsMaterializing(true);
+    setMaterializeMessage(null);
+    try {
+      const result = await materializeSkillYaml({
+        thread_id: threadId,
+        path: file.path!,
+        target_dir: "/mnt/user-data/uploads/skill",
+        clear_target: true,
+      });
+      setMaterializeMessage(
+        `已创建 ${result.created_files} 个文件 / ${result.created_directories} 个目录`,
+      );
+    } catch (error) {
+      const message = error instanceof Error ? error.message : "解析失败";
+      setMaterializeMessage(`失败: ${message}`);
+    } finally {
+      setIsMaterializing(false);
+    }
+  };
+
   if (isImage) {
     return (
       <a
@@ -383,6 +417,26 @@ function RichFileCard({
           {formatBytes(file.size)}
         </span>
       </div>
+      {isYaml && (
+        <div className="mt-1 flex flex-col gap-1">
+          <Button
+            size="sm"
+            variant="secondary"
+            className="h-7 text-xs"
+            onClick={() => {
+              void handleMaterializeYaml();
+            }}
+            disabled={isMaterializing}
+          >
+            {isMaterializing ? "解析中..." : "一键导入为 Skill 目录"}
+          </Button>
+          {materializeMessage && (
+            <span className="text-muted-foreground text-[10px] leading-tight">
+              {materializeMessage}
+            </span>
+          )}
+        </div>
+      )}
     </div>
   );
 }

frontend/src/components/workspace/messages/message-list.tsx

@@ -50,23 +50,23 @@ export function MessageList({
   const rehypePlugins = useRehypeSplitWordsIntoSpans(thread.isLoading);
   const updateSubtask = useUpdateSubtask();
   const messages = messagesOverride ?? thread.messages;
-  if (thread.isThreadLoading && !suppressThreadLoading) {
+  if (thread.isThreadLoading && !suppressThreadLoading && messages.length === 0) {
     return <MessageListSkeleton />;
   }
   return (
     <Conversation
       className={cn("flex size-full flex-col justify-center", className)}
     >
-      <ConversationContent className="w-full gap-8 px-[20px]">
+      <ConversationContent className="mx-auto w-full max-w-(--container-width-md) gap-8 pt-12">
         {groupMessages(messages, (group) => {
           if (group.type === "human" || group.type === "assistant") {
-            return (
+            return group.messages.map((msg) => (
               <MessageListItem
-                key={group.id}
-                message={group.messages[0]!}
+                key={`${group.id}/${msg.id}`}
+                message={msg}
                 isLoading={thread.isLoading}
               />
-            );
+            ));
           } else if (group.type === "assistant:clarification") {
             const message = group.messages[0];
             if (message && hasContent(message)) {
@@ -172,9 +172,9 @@ export function MessageList({
                   {t.subtasks.executing(tasks.size)}
                 </div>,
               );
-              const taskIds = message.tool_calls?.map(
-                (toolCall) => toolCall.id,
-              );
+              const taskIds = message.tool_calls
+                ?.filter((toolCall) => toolCall.name === "task")
+                .map((toolCall) => toolCall.id);
               for (const taskId of taskIds ?? []) {
                 results.push(
                   <SubtaskCard