nextjs-server-action-client-redirect-status/solution/gold.patch

diff --git a/packages/next/src/client/components/redirect.ts b/packages/next/src/client/components/redirect.ts
index 19d9409cf5e6f1be6de4a2db8996580011ec2d73..1068bd4c11e85b21415303b2e70e279791916757 100644
--- a/packages/next/src/client/components/redirect.ts
+++ b/packages/next/src/client/components/redirect.ts
@@ -24,7 +24,8 @@ export function getRedirectError(
  * [Server Actions](https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations).
  *
  * - In a Server Component, this will insert a meta tag to redirect the user to the target page.
- * - In a Route Handler or Server Action, it will serve a 307/303 to the caller.
+ * - In a Route Handler, it will serve a 307 to the caller.
+ * - In a Server Action, it will perform a client-side navigation when JavaScript is available or serve a 303 for a progressive enhancement form submission.
  * - In a Server Action, type defaults to 'push' and 'replace' elsewhere.
  *
  * Read more: [Next.js Docs: `redirect`](https://nextjs.org/docs/app/api-reference/functions/redirect)
@@ -46,7 +47,8 @@ export function redirect(
  * [Server Actions](https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations).
  *
  * - In a Server Component, this will insert a meta tag to redirect the user to the target page.
- * - In a Route Handler or Server Action, it will serve a 308/303 to the caller.
+ * - In a Route Handler, it will serve a 308 to the caller.
+ * - In a Server Action, it will perform a client-side navigation when JavaScript is available or serve a 303 for a progressive enhancement form submission.
  *
  * Read more: [Next.js Docs: `redirect`](https://nextjs.org/docs/app/api-reference/functions/redirect)
  */
diff --git a/packages/next/src/server/app-render/action-handler.ts b/packages/next/src/server/app-render/action-handler.ts
index 4166b97d4f4c1e562320e3af516838f5610e2dfd..9cc3433fb07907621c49f915a4e6217c1f9227f4 100644
--- a/packages/next/src/server/app-render/action-handler.ts
+++ b/packages/next/src/server/app-render/action-handler.ts
@@ -1272,12 +1272,13 @@ export async function handleAction({
       const redirectUrl = getURLFromRedirectError(err)
       const redirectType = getRedirectTypeFromError(err)
 
-      // if it's a fetch action, we'll set the status code for logging/debugging purposes
-      // but we won't set a Location header, as the redirect will be handled by the client router
-      res.statusCode = RedirectStatusCode.SeeOther
-      metadata.statusCode = RedirectStatusCode.SeeOther
-
       if (isFetchAction) {
+        // Fetch actions communicate redirects through `x-action-redirect` and
+        // can include the redirect target's Flight response in the body. Since
+        // this is not an HTTP redirect, keep the response successful.
+        res.statusCode = 200
+        metadata.statusCode = 200
+
         return {
           type: 'done',
           result: await createRedirectRenderResult(
@@ -1294,6 +1295,8 @@ export async function handleAction({
       }
 
       // For an MPA action, the redirect doesn't need a body, just a Location header.
+      res.statusCode = RedirectStatusCode.SeeOther
+      metadata.statusCode = RedirectStatusCode.SeeOther
       res.setHeader('Location', redirectUrl)
       return {
         type: 'done',
diff --git a/packages/next/src/server/lib/router-utils/typegen.ts b/packages/next/src/server/lib/router-utils/typegen.ts
index e162021d063e4662f01aaa28c30e91eee97b0d56..664532cfd02224cec9ab403de757b443e09c350d 100644
--- a/packages/next/src/server/lib/router-utils/typegen.ts
+++ b/packages/next/src/server/lib/router-utils/typegen.ts
@@ -378,7 +378,8 @@ declare module 'next/navigation' {
    * [Server Actions](https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations).
    *
    * - In a Server Component, this will insert a meta tag to redirect the user to the target page.
-   * - In a Route Handler or Server Action, it will serve a 307/303 to the caller.
+   * - In a Route Handler, it will serve a 307 to the caller.
+   * - In a Server Action, it will perform a client-side navigation when JavaScript is available or serve a 303 for a progressive enhancement form submission.
    * - In a Server Action, type defaults to 'push' and 'replace' elsewhere.
    *
    * Read more: [Next.js Docs: redirect](https://nextjs.org/docs/app/api-reference/functions/redirect)
@@ -396,7 +397,8 @@ declare module 'next/navigation' {
    * [Server Actions](https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations).
    *
    * - In a Server Component, this will insert a meta tag to redirect the user to the target page.
-   * - In a Route Handler or Server Action, it will serve a 308/303 to the caller.
+   * - In a Route Handler, it will serve a 308 to the caller.
+   * - In a Server Action, it will perform a client-side navigation when JavaScript is available or serve a 303 for a progressive enhancement form submission.
    *
    * Read more: [Next.js Docs: redirect](https://nextjs.org/docs/app/api-reference/functions/redirect)
    */