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/heat.md

@@ -0,0 +1,11 @@
+**Language / Язык:** [English](heat.md) | [Русский](../ru/domains/heat.md)
+
+# Heat (orchestration)
+
+Port **8004**. Paths `/v1/{tenant_id}/…`.
+
+## Stateful
+
+Stacks in `os_stacks`. Demo seed adds stacks plus nested
+`stack_resource` / `stack_event` / `software_config` / `software_deployment`
+rows for pack GET probes.