Initial release of the oVirt/RHV Engine API simulator.

Stateful FastAPI lab with contract packs, Compose/Helm, Docker Hub release
targets, and Pulumi coverage across all Engine series (GET/POST/PUT/DELETE/HEAD).

docs/domains/schema-collections.md

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+**Language / Язык:** [English](schema-collections.md) | [Русский](../ru/domains/schema-collections.md)
+
+# Schema collections
+
+Operations declared in the active series pack that do not have a specialized
+semantic handler are served by the **schema engine**. Responses follow the
+contract shape and persist into `ov_api_objects` where applicable.
+
+Browse the full catalog in the Web UI or open
+`contracts/ovirt/<series>/api.json`. Coverage numbers:
+[api_coverage.md](../api_coverage.md).
+
+Examples of pack-backed entry points (availability depends on series):
+`bookmarks`, `tags`, `quotas`, `affinitygroups`, and other Engine collections
+linked from the API root.