Fix AI stream by returning stream.value directly from Server Actions.

createStreamableValue must be created and returned in the action itself; wrapping in { data } or a helper return caused production RSC serialization errors.

Co-authored-by: Cursor <cursoragent@cursor.com>

components/modes/combined-form.tsx

@@ -109,7 +109,7 @@ export default function CombinedForm() {
     setShowAi(true);
 
     try {
-      const { data, error: apiError } = await getCombinedAnswer({
+      const stream = await getCombinedAnswer({
         birth: {
           date: birthDate,
           time: unknownHour ? "12:00" : birthTime,
@@ -133,20 +133,14 @@ export default function CombinedForm() {
           : undefined,
       });
 
-      if (apiError) {
-        setError(apiError);
-        return;
-      }
-      if (data) {
-        let ret = "";
-        for await (const delta of readStreamableValue(data)) {
-          if (typeof delta === "string" && delta.startsWith(ERROR_PREFIX)) {
-            setError(delta.slice(ERROR_PREFIX.length));
-            return;
-          }
-          ret += delta ?? "";
-          setCompletion(ret);
+      let ret = "";
+      for await (const delta of readStreamableValue(stream)) {
+        if (typeof delta === "string" && delta.startsWith(ERROR_PREFIX)) {
+          setError(delta.slice(ERROR_PREFIX.length));
+          return;
         }
+        ret += delta ?? "";
+        setCompletion(ret);
       }
     } catch (e) {
       setError(e instanceof Error ? e.message : String(e));