fix: markdown table rendering (#27747)

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

@@ -1533,6 +1533,7 @@ function TextPart(props: { last: boolean; part: TextPart; message: AssistantMess
           streaming={true}
           internalBlockMode="top-level"
           content={props.part.text.trim()}
+          tableOptions={{ style: "grid" }}
           conceal={ctx.conceal()}
           fg={theme.markdownText}
           bg={theme.background}