diff --git a/AGENTS.md b/AGENTS.md
index ac23003..d53d27e 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -190,6 +190,15 @@ the linked documents — this file points, it does not duplicate.
 > and never treat a single native change as a reason to. What ships without Xcode does not belong in
 > that file: app UI travels in the OTA bundle, panel and backend in the integration's self-update.
 
+> **The test instance is called `Data-Metric-360` (binding, renamed by the owner 2026-09-07).**
+> It is the Docker container on `:18123` and **the only instance that may ever be touched** — the
+> owner's real instance is never worked on (their own hard line, section W). The container was
+> called `audi_ha_test` until 2026-09-07; **every section below that says `audi_ha_test` means this
+> same container** and is left as written, per this file's convention of not rewriting history. Only
+> the operational references were changed: `testumgebung/aufsetzen.sh`, `testumgebung/README.md`,
+> `companion-app/vite.config.ts`. Note that `aufsetzen.sh` starts with `docker rm -f` on that name —
+> running it destroys the current container and everything recorded in it.
+
 **How this file is loaded:** Claude Code does not read `AGENTS.md` natively; the root `CLAUDE.md`
 imports it via `@AGENTS.md` (official recommended pattern). Other agents (Codex, Cursor, Copilot)
 read `AGENTS.md` directly. Edit content here, not in `CLAUDE.md`.
diff --git a/companion-app/vite.config.ts b/companion-app/vite.config.ts
index f025a6b..08fcd3b 100644
--- a/companion-app/vite.config.ts
+++ b/companion-app/vite.config.ts
@@ -44,7 +44,7 @@ export default defineConfig({
   // reicht das serverseitig an die HA-Testinstanz weiter. Sonst blockt HA
   // die Anfrage direkt (siehe AGENTS.md: "CORS ist ein echter Zwang fuer
   // diese App" - `cors_allowed_origins` wirkt seit HA 2026.8 nicht). Nur
-  // gegen `audi_ha_test` (:18123) - die echte Instanz wird nie beruehrt.
+  // gegen `Data-Metric-360` (:18123) - die echte Instanz wird nie beruehrt.
   server: {
     port: 5173,
     proxy: {
diff --git a/testumgebung/README.md b/testumgebung/README.md
index 00cedd1..de167b2 100644
--- a/testumgebung/README.md
+++ b/testumgebung/README.md
@@ -67,7 +67,7 @@ curl -X POST -H "Authorization: Bearer $T" -H "Content-Type: application/json" \
 ## Aufräumen
 
 ```bash
-docker rm -f audi_ha_test
+docker rm -f Data-Metric-360
 ```
 
 Die Konfiguration liegt außerhalb des Repos unter dem im Skript gesetzten
diff --git a/testumgebung/aufsetzen.sh b/testumgebung/aufsetzen.sh
index 18b2364..9294f15 100755
--- a/testumgebung/aufsetzen.sh
+++ b/testumgebung/aufsetzen.sh
@@ -5,7 +5,7 @@ set -euo pipefail
 
 HIER="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJEKT="$(dirname "$HIER")"
-NAME="audi_ha_test"
+NAME="Data-Metric-360"
 PORT="18123"
 ZIEL="${AUDI_TEST_CONFIG:-${TMPDIR:-/tmp}/audi-ha-test-config}"
 BASIS="http://localhost:${PORT}"