Changing preview branch endpoint to read-write (#3257)

src/ipc/handlers/neon_handlers.ts

@@ -169,7 +169,7 @@ export function registerNeonHandlers() {
         const previewBranchResponse = await retryOnLocked(
           () =>
             neonClient.createProjectBranch(project.id, {
-              endpoints: [{ type: EndpointType.ReadOnly }],
+              endpoints: [{ type: EndpointType.ReadWrite }],
               branch: {
                 name: "preview",
                 parent_id: developmentBranch.id,
@@ -651,7 +651,7 @@ export function registerNeonHandlers() {
 
       if (branchId === appData.neonPreviewBranchId) {
         throw new DyadError(
-          "Preview branches are read-only and cannot be selected as the active Neon branch.",
+          "Preview branches are used for historical rollback and cannot be selected as the active Neon branch.",
           DyadErrorKind.Precondition,
         );
       }

src/lib/errors.test.ts

@@ -4,10 +4,12 @@ import { getErrorMessage } from "./errors";
 describe("getErrorMessage", () => {
   it("strips the Electron IPC wrapper from Error messages", () => {
     const error = new Error(
-      "Error invoking remote method 'neon:set-active-branch': Error: Preview branches are read-only.",
+      "Error invoking remote method 'neon:set-active-branch': Error: Preview branches are used for historical rollback.",
     );
 
-    expect(getErrorMessage(error)).toBe("Preview branches are read-only.");
+    expect(getErrorMessage(error)).toBe(
+      "Preview branches are used for historical rollback.",
+    );
   });
 
   it("prefers a message field on plain objects", () => {