diff --git a/docs/ci-cd.md b/docs/ci-cd.md
index 3bc241a9f..ccc0f69f7 100644
--- a/docs/ci-cd.md
+++ b/docs/ci-cd.md
@@ -114,6 +114,24 @@ commit in the range (see the `decisions.md` header) — routine lifecycle metada
 > `DeployStack media-servers` silently targets the **dead** stack. Confirm with
 > `/read ListStacks` before deploying.
 >
+> **A third stack, literally named `ersatztv`, is also live and is NOT prod**: it owns
+> `ersatztv-test`, tracks the floating `:latest` tag, and runs with `auto_update: true`. (Stack
+> name, compose project, config-file path and image tag re-confirmed from the container labels on
+> jazz 2026-08-11; the `auto_update` flags and the bumblebee `unhealthy` status are carried from
+> the earlier checks noted above, not re-measured that day.)
+> `DeployStack ersatztv` succeeds and looks healthy — it just promotes nothing to prod. Three names,
+> one target:
+>
+> | Stack name | project_name | auto_update | owns |
+> |---|---|---|---|
+> | `jazz-media` | `media-servers` | `false` | `ersatztv` (**prod**, tracks `:prod`) |
+> | `ersatztv` | `ersatztv` | `true` | `ersatztv-test` (tracks `:latest`) |
+> | `media-servers` | — | — | dead stack on bumblebee, `unhealthy` |
+>
+> Don't resolve the prod stack by name at all — resolve it by the **container's**
+> `com.docker.compose.project.config_files` label (e.g. via `docker inspect`), which points at the
+> actual compose file path and can't be confused by a same-named stack.
+>
 > **There is no Global Auto Update fallback anymore**: `jazz-media` has `auto_update: false`
 > (`poll_for_updates: true` only), so nothing promotes `:prod` on a timer — promotion is manual,
 > full stop. The old "don't cut a tag near the 03:00 run" caveat no longer applies.