fix: 修复 Memory V2 合并导致的启动崩溃

master 的 Memory V2 重构删除了 memory/updater.py，admin_users.py 仍从中导入 get_memory_data 导致启动 ImportError。改用 BuiltinFileProvider 读取 V2 的 USER.md / 各 agent MEMORY.md；前端 MemoryBucketView 同步改为渲染 V2 条目列表。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend-web/src/pages/AdminUserActivityPage.tsx

@@ -71,67 +71,38 @@ function MessageRow({ message }: { message: AdminMessage }) {
   );
 }
 
-/** Render one memory bucket: context summaries + facts. */
+/** Render one Memory V2 bucket: a flat list of USER.md / MEMORY.md entries. */
 function MemoryBucketView({ bucket }: { bucket: AdminMemoryBucket }) {
-  const data = bucket.data as {
-    user?: Record<string, { summary?: string }>;
-    history?: Record<string, { summary?: string }>;
-    facts?: Array<{ content?: string; category?: string; confidence?: number }>;
-  };
-  const sections: Array<[string, string]> = [];
-  const labels: Record<string, string> = {
-    workContext: "工作背景",
-    personalContext: "个人背景",
-    topOfMind: "近期关注",
-    recentMonths: "近几个月",
-    earlierContext: "更早记录",
-    longTermBackground: "长期背景",
-  };
-  for (const group of [data.user, data.history]) {
-    for (const [key, value] of Object.entries(group ?? {})) {
-      const summary = value?.summary?.trim();
-      if (summary) sections.push([labels[key] ?? key, summary]);
-    }
-  }
-  const facts = (data.facts ?? []).filter((f) => f.content?.trim());
+  const raw = (bucket.data as { entries?: unknown }).entries;
+  const entries = Array.isArray(raw)
+    ? raw.filter(
+        (e): e is string => typeof e === "string" && e.trim().length > 0,
+      )
+    : [];
 
   return (
     <div className="rounded-md border p-4">
       <div className="mb-3 flex items-center gap-2">
         <Badge variant={bucket.name === "global" ? "default" : "secondary"}>
-          {bucket.name === "global" ? "全局记忆" : `Agent: ${bucket.name}`}
+          {bucket.name === "global" ? "用户画像" : `Agent: ${bucket.name}`}
         </Badge>
+        {entries.length > 0 && (
+          <span className="text-muted-foreground text-xs">
+            {entries.length} 条
+          </span>
+        )}
       </div>
-      {sections.length === 0 && facts.length === 0 && (
+      {entries.length === 0 ? (
         <p className="text-muted-foreground text-sm">该记忆库暂无内容。</p>
-      )}
-      {sections.length > 0 && (
-        <div className="flex flex-col gap-2">
-          {sections.map(([label, summary]) => (
-            <div key={label}>
-              <span className="text-muted-foreground text-xs">{label}</span>
-              <p className="text-sm">{summary}</p>
-            </div>
+      ) : (
+        <ul className="flex flex-col gap-1.5">
+          {entries.map((entry, i) => (
+            <li key={i} className="flex items-start gap-2 text-sm">
+              <span className="text-muted-foreground">·</span>
+              <span className="flex-1 whitespace-pre-wrap">{entry}</span>
+            </li>
           ))}
-        </div>
-      )}
-      {facts.length > 0 && (
-        <div className="mt-3">
-          <span className="text-muted-foreground text-xs">事实记录（{facts.length}）</span>
-          <ul className="mt-1 flex flex-col gap-1">
-            {facts.map((fact, i) => (
-              <li key={i} className="flex items-start gap-2 text-sm">
-                <span className="text-muted-foreground">·</span>
-                <span className="flex-1">{fact.content}</span>
-                {fact.category && (
-                  <Badge variant="outline" className="shrink-0 text-xs">
-                    {fact.category}
-                  </Badge>
-                )}
-              </li>
-            ))}
-          </ul>
-        </div>
+        </ul>
       )}
     </div>
   );