diff --git a/extensions/whatsapp/src/setup-surface.ts b/extensions/whatsapp/src/setup-surface.ts
index 60cb48e3194..142d88819a7 100644
--- a/extensions/whatsapp/src/setup-surface.ts
+++ b/extensions/whatsapp/src/setup-surface.ts
@@ -50,7 +50,6 @@ function mergeWhatsAppConfig(
       },
     };
   }
-
   const accounts = {
     ...((channelConfig.accounts as Record<string, WhatsAppAccountConfig> | undefined) ?? {}),
   };
@@ -65,7 +64,7 @@ function mergeWhatsAppConfig(
     }
     mutableNextAccount[key] = value;
   }
-  accounts[accountId] = nextAccount;
+  accounts[accountId] = nextAccount as WhatsAppAccountConfig;
   return {
     ...cfg,
     channels: {
diff --git a/src/agents/openai-transport-stream.ts b/src/agents/openai-transport-stream.ts
index 12e8add7b50..654b1f40876 100644
--- a/src/agents/openai-transport-stream.ts
+++ b/src/agents/openai-transport-stream.ts
@@ -964,11 +964,13 @@ export function buildOpenAIResponsesParams(
   options: OpenAIResponsesOptions | undefined,
 ) {
   const compat = getCompat(model as OpenAIModeModel);
+  const supportsDeveloperRole =
+    typeof compat.supportsDeveloperRole === "boolean" ? compat.supportsDeveloperRole : undefined;
   const messages = convertResponsesMessages(
     model,
     context,
     new Set(["openai", "openai-codex", "opencode", "azure-openai-responses"]),
-    { supportsDeveloperRole: compat.supportsDeveloperRole },
+    { supportsDeveloperRole },
   );
   const cacheRetention = resolveCacheRetention(options?.cacheRetention);
   const params: OpenAIResponsesRequestParams = {