fix(tui): render the checkboxes in the to-do list items

packages/tui/src/components/markdown.ts

@@ -556,8 +556,10 @@ export class Markdown implements Component {
 		for (let i = 0; i < token.items.length; i++) {
 			const item = token.items[i];
 			const bullet = token.ordered ? `${startNumber + i}. ` : "- ";
-			const firstPrefix = indent + this.theme.listBullet(bullet);
-			const continuationPrefix = indent + " ".repeat(visibleWidth(bullet));
+			const taskMarker = item.task ? `[${item.checked ? "x" : " "}] ` : "";
+			const marker = bullet + taskMarker;
+			const firstPrefix = indent + this.theme.listBullet(marker);
+			const continuationPrefix = indent + " ".repeat(visibleWidth(marker));
 			const itemWidth = Math.max(1, width - visibleWidth(firstPrefix));
 			let renderedAnyLine = false;
 

packages/tui/test/markdown.test.ts

@@ -124,6 +124,14 @@ describe("Markdown component", () => {
 			assert.ok(plainLines.some((line) => line.includes("2. Second ordered")));
 		});
 
+		it("should render task list markers", () => {
+			const markdown = new Markdown("- [ ] beep\n- [x] boop", 0, 0, defaultMarkdownTheme);
+
+			const lines = markdown.render(80).map((line) => stripAnsi(line).trimEnd());
+
+			assert.deepStrictEqual(lines, ["- [ ] beep", "- [x] boop"]);
+		});
+
 		it("should maintain numbering when code blocks are not indented (LLM output)", () => {
 			// When code blocks aren't indented, marked parses each item as a separate list.
 			// We use token.start to preserve the original numbering.