fix(admin): classify bulk wallet adjustment failures

apps/aether-gateway/src/state/app.rs

@@ -494,6 +494,8 @@ pub struct AppState {
     #[cfg(test)]
     pub(crate) auth_wallet_adjustment_error_for_tests: Option<String>,
     #[cfg(test)]
+    pub(crate) auth_wallet_lookup_error_for_tests: Option<String>,
+    #[cfg(test)]
     pub(crate) admin_wallet_payment_order_store:
         Option<Arc<StdMutex<HashMap<String, AdminWalletPaymentOrderRecord>>>>,
     #[cfg(test)]

apps/aether-gateway/src/state/core.rs

@@ -468,6 +468,8 @@ impl AppState {
             #[cfg(test)]
             auth_wallet_adjustment_error_for_tests: None,
             #[cfg(test)]
+            auth_wallet_lookup_error_for_tests: None,
+            #[cfg(test)]
             admin_wallet_payment_order_store: Some(Arc::new(StdMutex::new(HashMap::new()))),
             #[cfg(test)]
             admin_payment_callback_store: Some(Arc::new(StdMutex::new(HashMap::new()))),

apps/aether-gateway/src/state/runtime/wallet/reads.rs

@@ -5,6 +5,19 @@ impl AppState {
         &self,
         lookup: aether_data::repository::wallet::WalletLookupKey<'_>,
     ) -> Result<Option<aether_data::repository::wallet::StoredWalletSnapshot>, GatewayError> {
+        #[cfg(test)]
+        if let Some(failed_user_id) = self.auth_wallet_lookup_error_for_tests.as_deref() {
+            let lookup_user_id = match &lookup {
+                aether_data::repository::wallet::WalletLookupKey::UserId(user_id) => Some(*user_id),
+                _ => None,
+            };
+            if lookup_user_id == Some(failed_user_id) {
+                return Err(GatewayError::Internal(
+                    "injected test wallet lookup failure".to_string(),
+                ));
+            }
+        }
+
         #[cfg(test)]
         if let Some(store) = self.auth_wallet_store.as_ref() {
             let wallet = {

apps/aether-gateway/src/state/testing.rs

@@ -480,6 +480,11 @@ impl AppState {
         self
     }
 
+    pub(crate) fn fail_auth_wallet_lookup_for_tests(mut self, user_id: impl Into<String>) -> Self {
+        self.auth_wallet_lookup_error_for_tests = Some(user_id.into());
+        self
+    }
+
     pub(crate) fn with_admin_wallet_payment_orders_for_tests<I>(mut self, orders: I) -> Self
     where
         I: IntoIterator<Item = crate::AdminWalletPaymentOrderRecord>,