Method appendToHistory

src/node/services/historyService.ts:1513–1523

(workspaceId: string, message: MuxMessage)

  }

  async appendToHistory(workspaceId: string, message: MuxMessage): Promise<Result<void>> {
    return this.fileLocks.withLock(workspaceId, async () => {
      const result = await this._appendToHistoryUnlocked(workspaceId, message);
      if (result.success) {
        // A new durable boundary seals the previous epoch — rotate it out of
        // chat.jsonl so subsequent reads/rewrites stay O(active epoch).
        await this.rotateAfterBoundaryWriteUnlocked(workspaceId, message);
      }
      return result;
    });
  }

  /**
   * Update an existing message in history by historySequence