Fix symmetric padding in TUI input field (#6894)

Co-authored-by: opencode-agent[bot] <opencode-agent[bot]@users.noreply.github.com>
Co-authored-by: rekram1-node <[email protected]>

packages/opencode/src/cli/cmd/tui/component/prompt/index.tsx

@@ -749,7 +749,7 @@ export function Prompt(props: PromptProps) {
         >
           <box
             paddingLeft={2}
-            paddingRight={1}
+            paddingRight={2}
             paddingTop={1}
             flexShrink={0}
             backgroundColor={theme.backgroundElement}