use min/maxHeight for question textarea

packages/opencode/src/cli/cmd/tui/routes/session/question.tsx

@@ -366,6 +366,8 @@ export function QuestionPrompt(props: { request: QuestionRequest }) {
                         }}
                         initialValue={input()}
                         placeholder="Type your own answer"
+                        minHeight={1}
+                        maxHeight={6}
                         textColor={theme.text}
                         focusedTextColor={theme.text}
                         cursorColor={theme.primary}