diff --git a/packages/cli/tests/pty-screen.test.ts b/packages/cli/tests/pty-screen.test.ts
new file mode 100644
index 0000000..4470149
--- /dev/null
+++ b/packages/cli/tests/pty-screen.test.ts
@@ -0,0 +1,7 @@
+import { lastPromptLine } from './pty/screen.js'
+
+describe('PTY prompt detection', () => {
+  it('recognizes the legacy Windows prompt arrow inside Unicode box rails', () => {
+    expect(lastPromptLine(['╭────╮', '│ >  │', '╰────╯'])).toBe('│ >  │')
+  })
+})
diff --git a/packages/cli/tests/pty/screen.ts b/packages/cli/tests/pty/screen.ts
index 6182400..fb8213a 100644
--- a/packages/cli/tests/pty/screen.ts
+++ b/packages/cli/tests/pty/screen.ts
@@ -32,7 +32,7 @@ export function lastPromptLine(lines: string[]): string {
     // Boxed prompt: `│ › …… │` — the rails are part of the live input box.
     // Permission-dialog option rows also start with `│ ` but their pointer
     // sits behind a 4-space indent, so they can't false-match `│ ›`.
-    if (line.startsWith('│ ›') || line.startsWith('| >')) return line
+    if (line.startsWith('│ ›') || line.startsWith('│ >') || line.startsWith('| >')) return line
   }
   return ''
 }