Method getAggregator

src/browser/stores/WorkspaceStore.ts:2221–2223

* Get aggregator for a workspace (used by components that need direct access). * Returns undefined if workspace does not exist.

(workspaceId: string)

   * Returns undefined if workspace does not exist.
   */
  getAggregator(workspaceId: string): StreamingMessageAggregator | undefined {
    return this.aggregators.get(workspaceId);
  }

  /**
   * Clear stored abort reason so manual retries can re-enable auto-retry.