fix(ui): preserve user ordered-list markers (closes #5013)

packages/tui/test/markdown.test.ts

@@ -104,6 +104,31 @@ describe("Markdown component", () => {
 			assert.ok(plainLines.some((line) => line.includes("2. Second")));
 		});
 
+		it("should normalize ordered list markers by default", () => {
+			const markdown = new Markdown("1. alpha\n1. beta\n1. gamma", 0, 0, defaultMarkdownTheme);
+
+			const lines = markdown.render(80).map((line) => stripAnsi(line).trimEnd());
+
+			assert.deepStrictEqual(lines, ["1. alpha", "2. beta", "3. gamma"]);
+		});
+
+		it("should preserve source ordered list markers when configured", () => {
+			const markdown = new Markdown(
+				"  4. forth\n  3. third\n\n10) ten\n7) seven",
+				0,
+				0,
+				defaultMarkdownTheme,
+				undefined,
+				{
+					preserveOrderedListMarkers: true,
+				},
+			);
+
+			const lines = markdown.render(80).map((line) => stripAnsi(line).trimEnd());
+
+			assert.deepStrictEqual(lines, ["4. forth", "3. third", "", "10) ten", "7) seven"]);
+		});
+
 		it("should render mixed ordered and unordered nested lists", () => {
 			const markdown = new Markdown(
 				`1. Ordered item