docs(ai-agents): fix tool wiring and recursive return type in the guides

Pass tools into chat.toStreamTextOptions({ tools }) in the chat agent guide so
HITL approval detection and auto-injected skill tools survive, instead of
passing them straight to streamText where the merged set is dropped. Give the
recursive translate-and-refine task an explicit return type so the copied
snippet doesn't hit TypeScript's circular-inference error.

Author: D-K-P

docs/guides/ai-agents/chat-agent.mdx

@@ -63,10 +63,12 @@ export const myChat = chat.agent({
   tools: { getCurrentTime },
   run: async ({ messages, tools, signal }) => {
     return streamText({
-      ...chat.toStreamTextOptions(),
+      // Pass tools INTO toStreamTextOptions (not separately to streamText):
+      // this is what detects tool calls needing HITL approval and merges any
+      // auto-injected skill tools. It sets streamText's `tools` for you.
+      ...chat.toStreamTextOptions({ tools }),
       model: anthropic("claude-sonnet-4-5"),
       messages,
-      tools,
       stopWhen: stepCountIs(15),
       abortSignal: signal,
     });

docs/guides/ai-agents/translate-and-refine.mdx

@@ -35,9 +35,17 @@ interface TranslationPayload {
   rejectionCount?: number;
 }
 
+interface TranslationResult {
+  finalTranslation: string | undefined;
+  iterations: number;
+  status: "MAX_ITERATIONS_REACHED" | "APPROVED";
+}
+
 export const translateAndRefine = task({
   id: "translate-and-refine",
-  run: async (payload: TranslationPayload) => {
+  // Explicit return type: the task returns its own recursive result, so
+  // annotate it to avoid TypeScript's circular-inference error.
+  run: async (payload: TranslationPayload): Promise<TranslationResult> => {
     const rejectionCount = payload.rejectionCount || 0;
 
     // Bail out if we've hit the maximum attempts