diff --git a/apps/portal-admin/src/locale/messages.fr.xlf b/apps/portal-admin/src/locale/messages.fr.xlf
index 07ce70e..ea3fc4a 100644
--- a/apps/portal-admin/src/locale/messages.fr.xlf
+++ b/apps/portal-admin/src/locale/messages.fr.xlf
@@ -21,6 +21,10 @@
         <source>Users — APF Portal Admin</source>
         <target>Utilisateurs — Administration APF Portal</target>
       </trans-unit>
+      <trans-unit id="route.user-scopes.title" datatype="html">
+        <source>User scopes — APF Portal Admin</source>
+        <target>Périmètres utilisateur — Administration APF Portal</target>
+      </trans-unit>
       <trans-unit id="route.profile.title" datatype="html">
         <source>Profile — APF Portal Admin</source>
         <target>Profil — Administration APF Portal</target>
diff --git a/apps/portal-bff/src/admin/user-scopes.service.ts b/apps/portal-bff/src/admin/user-scopes.service.ts
index 1a9a8ac..8f5b965 100644
--- a/apps/portal-bff/src/admin/user-scopes.service.ts
+++ b/apps/portal-bff/src/admin/user-scopes.service.ts
@@ -194,7 +194,15 @@ export class UserScopesService {
     // ADR-0026 PR 1's "no FK on UserScope.value" rationale lets the
     // value persist even after the target is decommissioned, so we
     // validate only at the write path.
-    let exists: boolean;
+    //
+    // Initialise `exists = false` so TypeScript sees it as definitely
+    // assigned regardless of how the switch lands (the type-system
+    // can't see that `VALUE_BEARING_KINDS.has` already narrowed
+    // `kind` to the three branches). If somehow a non-value-bearing
+    // kind reached this code, the false default makes the next `if`
+    // throw with the same friendly "does not match" message — safe
+    // by construction.
+    let exists = false;
     switch (kind) {
       case 'etablissement':
         exists =