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/web-ui.md

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+**Language / Язык:** [English](web-ui.md) | [Русский](ru/web-ui.md)
+
+# Web UI
+
+Console URL (Compose default): [http://127.0.0.1:5000/](http://127.0.0.1:5000/)
+
+Drawer UX matches the other laboratory simulators in this family:
+
+| Area | Purpose |
+|---|---|
+| Auth | Issue lab tokens / show principal |
+| API catalog | Browse contract operations for the active series |
+| Coverage | Pack / handler coverage summary |
+| Help | Short operator notes |
+| Data | Reseed `minimal` / `demo` |
+| Environment | Active series, runtime hints, **Apply pack** hot-swap |
+
+## Series hot-swap
+
+From Environment (or UI API):
+
+- `POST /ui/api/ovirt/contracts/activate` with `{"series":"4.4"}`
+- `POST /ui/api/contract/apply?major=N`
+
+This remounts the in-memory contract routes without rebuilding the image. A
+process restart restores the cold-start `OVIRT_SERIES` value. See
+[API versions](api-versions.md).
+
+Branding uses oVirt blue `#0076B6` and charcoal `#1D2226`.
+
+The UI talks to the same simulator process as the Engine API; only the published
+listener differs ([ports.md](ports.md)). OpenAPI schema:
+[http://127.0.0.1:5000/docs](http://127.0.0.1:5000/docs) (also on Engine port).