Initial commit: stateful OpenStack API laboratory simulator.

Ship Keystone auth, multi-service handlers (Yoga→Dalmatian), Compose/Helm
packaging, API contract packs, and pytest/Pulumi coverage labs.

docs/domains/nova.md

@@ -0,0 +1,20 @@
+**Language / Язык:** [English](nova.md) | [Русский](../ru/domains/nova.md)
+
+# Nova (compute)
+
+Port **8774**. Paths under `/v2.1/`.
+
+## Stateful resources
+
+Servers, flavors, keypairs, server groups, AZ, hypervisors, aggregates,
+services, migrations, volume/interface attachments, metadata, tags,
+instance actions, consoles (lab URLs).
+
+## Demo cloud
+
+~1000 servers across projects, metadata/`_tags`, attachments linked to volumes
+and ports.
+
+## Microversions
+
+Send `OpenStack-API-Version: compute X.Y` or Nova legacy header. Pack gates apply.