API Evangelist enhancements for S2, the durable streams API

overlay: 1.0.0
info:
  title: API Evangelist enhancements for S2, the durable streams API
  version: 1.0.0
extends: openapi/s2-dev-openapi-original.json
actions:
  - target: $.info
    update:
      x-apievangelist-provider: s2-dev
      x-apievangelist-category: streaming
      x-apievangelist-agent-ready: true
      x-apievangelist-notes: >-
        S2 is a durable, real-time stream store. Auth is a scoped bearer
        access token (capability model: op_groups + resource sets), not OAuth2.
        ensure_basin / ensure_stream (PUT) are idempotent upserts; appends use
        match_seq_num (optimistic) and fencing_token (pessimistic) for
        concurrency. Cursor pagination via has_more.
  - target: $.servers
    update:
      - url: https://a.s2.dev/v1
        description: Account / control-plane endpoint
      - url: https://{basin}.b.s2.dev/v1
        description: Basin-scoped data-plane endpoint
        variables:
          basin:
            default: my-basin
            description: Basin name