Theme: `user` kept surfacing across 415 memories.
Theme: `assistant` kept surfacing across 522 memories.

---

会话语料 (session-corpus/*.txt)
  → 包含元数据: "User: Sender (untrusted metadata): ..."
  → deriveConceptTags() 提取概念标签
  → "user", "assistant", "sender" 不在停用词表中
  → 被标记为 conceptTags
  → buildRemReflections() 统计频率
  → 输出无意义的主题统计

---

const CONCEPT_STOP_WORDS = new Set(Object.values({
  shared: [
    // 现有停用词...
    "about", "after", "agent", "also", ...
    
    // 新增：元数据相关词汇
    "user",
    "assistant", 
    "sender",
    "receiver",
    "metadata",
    "untrusted",
    "trusted",
    "context",
    "message",
    "timestamp",
    "session",
    "conversation",
    "label",
    "id",
    "json",
    "token",
    "uuid",
    "openclaw",
    "runtime",
    "internal",
    "system"
  ],
  // ...
}));

---

function deriveConceptTags(params) {
  const source = `${path.basename(params.path)} ${params.snippet}`;
  const limit = Number.isFinite(params.limit) ? Math.max(0, Math.floor(params.limit)) : 8;
  if (limit === 0) return [];
  
  const tags = [];
  
  // 新增：过滤元数据模式
  const METADATA_PATTERNS = [
    /^(user|assistant|sender|receiver|metadata|untrusted|trusted|context|message|timestamp|session|conversation|label|json|token|uuid|openclaw|runtime|internal|system)$/i,
    /^(ou_|om_|cli_)[a-z0-9]+$/i,  // 飞书ID模式
    /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}/i,  // ISO时间戳
  ];
  
  function isMetadataToken(token) {
    return METADATA_PATTERNS.some(p => p.test(token));
  }
  
  for (const rawToken of [
    ...collectGlossaryMatches(source),
    ...collectCompoundTokens(source),
    ...collectSegmentTokens(source)
  ]) {
    // 新增：跳过元数据模式
    if (isMetadataToken(rawToken)) continue;
    
    pushNormalizedTag(tags, rawToken, limit);
    if (tags.length >= limit) break;
  }
  return tags;
}

---

Theme: `user` kept surfacing across 415 memories.
Theme: `assistant` kept surfacing across 522 memories.

---

Theme: `Graphify` kept surfacing across 12 memories.
Theme: `协议嵌入` kept surfacing across 8 memories.
Theme: `模型配置` kept surfacing across 6 memories.