fix: render platform logos in navigation

press.config.tsx

@@ -22,6 +22,32 @@ function nodeName(node: PageTreeNode) {
   return typeof node.name === "string" ? node.name : "";
 }
 
+function renderNavigationIcon(icon: PageTreeNode["icon"]) {
+  if (typeof icon !== "string" || !icon.startsWith("/")) return icon;
+  return (
+    <img
+      src={icon}
+      alt=""
+      aria-hidden="true"
+      className="size-4 shrink-0 object-contain"
+    />
+  );
+}
+
+function renderNavigationIcons(node: PageTreeNode): PageTreeNode {
+  if (node.type === "folder") {
+    return {
+      ...node,
+      icon: renderNavigationIcon(node.icon),
+      index: node.index
+        ? { ...node.index, icon: renderNavigationIcon(node.index.icon) }
+        : undefined,
+      children: node.children.map(renderNavigationIcons),
+    };
+  }
+  return { ...node, icon: renderNavigationIcon(node.icon) };
+}
+
 const openApiTagOrder = Object.fromEntries(LOCALES.map((locale) => {
   const spec = JSON.parse(readFileSync(`openapi/service-api-${locale}.json`, "utf8"));
   const tags: string[] = [];
@@ -329,7 +355,11 @@ export default defineConfig({
               sourceTree = (await context.getLoader()).getPageTree(page.locale);
               sourceTrees.set(locale, sourceTree);
             }
-            props.layoutProps.tree = sectionizeMintlifyTree(props.layoutProps.tree, sourceTree, locale);
+            props.layoutProps.tree = {
+              ...props.layoutProps.tree,
+              children: sectionizeMintlifyTree(props.layoutProps.tree, sourceTree, locale)
+                .children.map(renderNavigationIcons),
+            };
             return props;
           });
         }

tests/fumapress-static-build.test.mjs

@@ -96,6 +96,29 @@ test("representative localized guides and canonical host are emitted", async ()
   assert.doesNotMatch(robots, /https:\/\/docs\.langbot\.app\//);
 });
 
+test("platform navigation renders logo assets instead of icon path text", async () => {
+  for (const locale of ["en", "zh", "ja"]) {
+    const html = await readFile(
+      path.join(publicRoot, locale, "usage/platforms/discord/index.html"),
+      "utf8",
+    );
+    const asideStart = html.indexOf('<aside id="nd-sidebar"');
+    const asideEnd = html.indexOf("</aside>", asideStart);
+    const sidebar = html.slice(asideStart, asideEnd);
+    assert.match(
+      sidebar,
+      /<img[^>]+src="\/images\/platforms\/discord\.svg"[^>]*>/,
+      `${locale} sidebar is missing the Discord logo`,
+    );
+    assert.match(sidebar, />Discord</, `${locale} sidebar is missing the platform title`);
+    assert.doesNotMatch(
+      sidebar,
+      />\/images\/platforms\/discord\.svg(?:<!-- -->)?Discord</,
+      `${locale} sidebar exposes the icon path as text`,
+    );
+  }
+});
+
 test("all locales emit the OpenAPI surface with endpoint semantics", async () => {
   const representatives = {
     en: ["system/get-system-information", "Get system information", "GET", "/api/v1/system/info"],