fun improvements (#1)

Reviewed-on: #1

app/posts/[slug]/page.tsx

@@ -1,70 +1,95 @@
 import Link from "next/link";
 import { getPostData, getAllPostIds } from "@/lib/posts";
 import type { PostData } from "@/lib/posts";
-import Window from "../../../components/window";
+import Window from "@/components/window";
+import TableOfContents from "@/components/table-of-contents";
 import { MDXRemote } from "next-mdx-remote/rsc";
 import rehypePrettyCode from "rehype-pretty-code";
+import rehypeSlug from "rehype-slug";
 
 interface PageProps {
-  params: {
-    slug: string;
-  };
+  params: Promise<{ slug: string }>;
 }
 
-// This function tells Next.js which blog posts exist at build time
 export async function generateStaticParams() {
   const paths = getAllPostIds();
   return paths.map((path) => ({ slug: path.params.slug }));
 }
 
-// Generates metadata (like the title tag) for each blog post page
 export async function generateMetadata({ params }: PageProps) {
-  const postData = await getPostData(params.slug);
+  const { slug } = await params;
+  const postData = await getPostData(slug);
   return {
     title: `${postData.title} | Gabriel's Kaszewski Blog`,
   };
 }
 
 export default async function Post({ params }: PageProps) {
-  // Fetch the specific post's content based on the URL slug
-  const postData: PostData = await getPostData(params.slug);
+  const { slug } = await params;
+  const postData: PostData = await getPostData(slug);
 
   return (
-    <div className="mx-auto max-w-4xl">
-      <Window title={postData.title}>
-        <article>
-          <div className="mb-4 text-gray-500 flex flex-col gap-1">
-            <span>
-              {new Date(postData.date).toLocaleDateString("en-US", {
-                year: "numeric",
-                month: "long",
-                day: "numeric",
-              })}
-            </span>
-            <span className="text-sm text-gray-400">
-              {postData.readingTime}
-            </span>
-          </div>
-          <div className="prose lg:prose-xl max-w-none">
-            <MDXRemote
-              source={postData.content}
-              options={{
-                mdxOptions: {
-                  rehypePlugins: [
-                    [
-                      rehypePrettyCode,
-                      {
-                        theme: "github-dark-dimmed",
-                        keepBackground: false,
-                      },
+    <div className="mx-auto max-w-6xl">
+      <div className="lg:flex lg:gap-4 lg:items-start">
+        <Window title={postData.title} showProgress className="lg:flex-1 min-w-0">
+          <article>
+            <div className="mb-4 text-gray-500 flex flex-col gap-1">
+              <span>
+                {new Date(postData.date).toLocaleDateString("en-US", {
+                  year: "numeric",
+                  month: "long",
+                  day: "numeric",
+                })}
+              </span>
+              <span className="text-sm text-gray-400">{postData.readingTime}</span>
+            </div>
+
+            {postData.wip && (
+              <div className="mb-6 flex items-center gap-3 rounded-lg border border-amber-300 bg-amber-50/70 px-4 py-3 text-sm text-amber-800">
+                <span className="text-lg">🚧</span>
+                <span>This post is a work in progress — content may change.</span>
+              </div>
+            )}
+
+            {/* Mobile TOC — inline above article, hidden on lg+ */}
+            {postData.headings.length > 0 && (
+              <div className="lg:hidden mb-6 bg-white/20 backdrop-blur border border-white/30 rounded-lg p-4">
+                <TableOfContents headings={postData.headings} />
+              </div>
+            )}
+
+            <div className="prose lg:prose-lg max-w-none">
+              <MDXRemote
+                source={postData.content}
+                options={{
+                  mdxOptions: {
+                    rehypePlugins: [
+                      rehypeSlug,
+                      [
+                        rehypePrettyCode,
+                        {
+                          theme: "github-dark-dimmed",
+                          keepBackground: false,
+                        },
+                      ],
                     ],
-                  ],
-                },
-              }}
-            />
+                  },
+                }}
+              />
+            </div>
+          </article>
+        </Window>
+
+        {/* Desktop TOC — separate Aero Window, sticky on the right */}
+        {postData.headings.length > 0 && (
+          <div className="hidden lg:block w-56 flex-shrink-0 sticky top-8">
+            <Window title="Contents">
+              <TableOfContents headings={postData.headings} />
+            </Window>
           </div>
-        </article>
-      </Window>
+        )}
+      </div>
+
       <div className="mt-8 text-center">
         <Link
           href="/"