flip back to markdown renderable (#27421)

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

@@ -1528,14 +1528,14 @@ function TextPart(props: { last: boolean; part: TextPart; message: AssistantMess
   return (
     <Show when={props.part.text.trim()}>
       <box id={"text-" + props.part.id} paddingLeft={3} marginTop={1} flexShrink={0}>
-        <code
-          filetype="markdown"
-          drawUnstyledText={false}
-          streaming={true}
+        <markdown
           syntaxStyle={syntax()}
+          streaming={true}
+          internalBlockMode="top-level"
           content={props.part.text.trim()}
           conceal={ctx.conceal()}
-          fg={theme.text}
+          fg={theme.markdownText}
+          bg={theme.background}
         />
       </box>
     </Show>