feat(cli): manage annotation queues and reviewed additions

[liam-langchain]

Summary

Adds queue create, queue list, queue delete, queue items, and queue add for annotation queues and reviewed run/thread selection plans.

Depends only on shared foundation #309, not feedback. After #309 merges, retarget to main and run CI; do not merge into the foundation branch.

Manual testing

Use an authenticated profile and disposable resources; replace placeholders:

make build
bin/langsmith queue create --name cli-review --dataset DATASET_ID
bin/langsmith queue list --limit 20
bin/langsmith queue add QUEUE_ID --project-id PROJECT_ID --trace-id TRACE_ID --dry-run --output plan.json
bin/langsmith queue add QUEUE_ID --project-id PROJECT_ID --plan plan.json
bin/langsmith queue items QUEUE_ID --limit 20
bin/langsmith queue delete QUEUE_ID --yes

Review the frozen plan before applying. Re-adding an item can reopen its review.

Test Plan

• Thread request shape, dry-run without writes, and scope/duplicate validation.
• Returned identity checks, empty write responses, and deletion confirmation.
• Live thread and mixed-success failure-injection coverage.
• Main-targeted CI after the foundation merges.

No API or SDK changes. Corridor was blocked by session policy.

[liam-langchain]

Review the combined draft #326 for the current implementation, tests, and ADLC findings. This capability PR is retained as a reference; do not merge it separately alongside #326. No branch history was rewritten.

[liam-langchain]

Superseded by the consolidated implementation in #326, which is now the single review and merge target. Closing this split PR to avoid duplicate reviews or merges. The branch and discussion are retained for reference.