Method fetchMergeQueueEntry

src/browser/stores/PRStatusStore.ts:526–578

* Fetch merge queue details via GraphQL. * Best-effort only: failures should not block normal PR status updates.

(
    workspaceId: string,
    prLink: { owner: string; repo: string; number: number }
  )

   * Best-effort only: failures should not block normal PR status updates.
   */
  private async fetchMergeQueueEntry(
    workspaceId: string,
    prLink: { owner: string; repo: string; number: number }
  ): Promise<MergeQueueEntry | null> {
    if (!this.client || !this.isActive) {
      return null;
    }

    try {
      const result = await this.client.workspace.executeBash({
        workspaceId,
        script: [
          "gh api graphql",
          `-f query='${MERGE_QUEUE_QUERY}'`,
          `-f owner='${prLink.owner}'`,
          `-f repo='${prLink.repo}'`,
          `-F number=${prLink.number}`,
          "2>/dev/null",
        ].join(" "),
        // gh requires the runtime environment for devcontainer workspaces where
        // the CLI / auth may only exist inside the container.
        options: repoRootBashOptions(10),
      });

      if (!this.isActive || !result.success || !result.data.success) {
        return null;
      }

      if (!result.data.output) {
        return null;
      }

      const parsed = JSON.parse(result.data.output) as Record<string, unknown>;
      const data = parsed.data;
      if (typeof data !== "object" || data === null) {
        return null;
      }

      const repository = (data as Record<string, unknown>).repository;
      if (typeof repository !== "object" || repository === null) {
        return null;
      }

      const pullRequest = (repository as Record<string, unknown>).pullRequest;
      if (typeof pullRequest !== "object" || pullRequest === null) {
        return null;
      }

      return parseMergeQueueEntry((pullRequest as Record<string, unknown>).mergeQueueEntry);
    } catch {
      return null;
    }
  }

  private shouldFetchWorkspace(entry: WorkspacePRCacheEntry | undefined, now: number): boolean {
    if (!entry) return true;