chore(frontend): commit remaining workspace updates

tests/markdown-headings.test.mjs

@@ -0,0 +1,14 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { extractMarkdownHeadings } from "../src/lib/markdown-headings.ts";
+
+test("keeps markdown heading IDs tied to their source lines", () => {
+  assert.deepEqual(
+    extractMarkdownHeadings("# مقدمه\n\n## موضوع\n## موضوع"),
+    [
+      { id: "مقدمه", level: 1, text: "مقدمه", line: 1 },
+      { id: "موضوع", level: 2, text: "موضوع", line: 3 },
+      { id: "موضوع-2", level: 2, text: "موضوع", line: 4 },
+    ],
+  );
+});