test: get_users use case

Fake list_with_stats now returns stored users (was always empty).

crates/domain/src/testing/fakes/store_user.rs

@@ -59,7 +59,21 @@ impl UserRepository for InMemoryStore {
     }
 
     async fn list_with_stats(&self) -> Result<Vec<UserSummary>, DomainError> {
-        Ok(vec![])
+        let store = self.users.read().unwrap();
+        Ok(store
+            .values()
+            .map(|u| {
+                UserSummary::new(
+                    u.id().clone(),
+                    u.email().clone(),
+                    u.username().clone(),
+                    u.display_name().map(str::to_string),
+                    0,
+                    None,
+                    u.avatar_path().map(str::to_string),
+                )
+            })
+            .collect())
     }
 
     async fn update_profile(