Method searchSessions

src/context/ContextManager.ts:304–339

* 搜索历史会话

(
    query: string,
    limit: number = 10
  )

   * 搜索历史会话
   */
  async searchSessions(
    query: string,
    limit: number = 10
  ): Promise<
    Array<{
      sessionId: string;
      summary: string;
      lastActivity: number;
      relevanceScore: number;
    }>
  > {
    const sessions = await this.persistent.listSessions();
    const results: Array<{
      sessionId: string;
      summary: string;
      lastActivity: number;
      relevanceScore: number;
    }> = [];

    for (const sessionId of sessions) {
      const summary = await this.persistent.getSessionSummary(sessionId);
      if (summary) {
        const relevanceScore = this.calculateRelevance(query, summary.topics);
        if (relevanceScore > 0) {
          results.push({
            sessionId,
            summary: `${summary.messageCount}条消息，主题：${summary.topics.join('、')}`,
            lastActivity: summary.lastActivity,
            relevanceScore,
          });
        }
      }
    }

    return results.sort((a, b) => b.relevanceScore - a.relevanceScore).slice(0, limit);
  }

  /**
   * 获取缓存的工具调用结果