From 68910124f261c2a8422095a70e2809f59b569710 Mon Sep 17 00:00:00 2001
From: Tejas Kashinath <tkashina@amazon.com>
Date: Thu, 18 Jun 2026 16:37:45 -0400
Subject: [PATCH] fix(create): use harness-first language when project already
 exists
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When a user runs `agentcore create` inside an existing project, the
existing-project-error screen now leads with `add harness` and offers
`add agent` as the code-based alternative, instead of pointing only at
`add agent`.

Part of the harness GA cutover (single CLI, harness as a first-class
create option). Unconditional — no isPreviewEnabled() branch — matching
the post-merge GA state.
---
 src/cli/tui/screens/create/CreateScreen.tsx | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/cli/tui/screens/create/CreateScreen.tsx b/src/cli/tui/screens/create/CreateScreen.tsx
index d0fe55294..582076fae 100644
--- a/src/cli/tui/screens/create/CreateScreen.tsx
+++ b/src/cli/tui/screens/create/CreateScreen.tsx
@@ -364,9 +364,12 @@ export function CreateScreen({ cwd, isInteractive, onExit, onNavigate }: CreateS
         <Box marginBottom={1} flexDirection="column">
           <Text color="red">A project already exists at this location.</Text>
           {flow.existingProjectPath && <Text dimColor>Found: {flow.existingProjectPath}</Text>}
-          <Box marginTop={1}>
+          <Box marginTop={1} flexDirection="column">
             <Text>
-              Use <Text color="cyan">add agent</Text> to create a new agent in the existing project.
+              Use <Text color="cyan">add harness</Text> to add a harness to the existing project.
+            </Text>
+            <Text dimColor>
+              Or use <Text color="cyan">add agent</Text> to add a code-based agent.
             </Text>
           </Box>
         </Box>