docs: add starter mdx posts

content/posts/designing-with-nextjs.mdx

@@ -0,0 +1,33 @@
+---
+title: "Designing With Next.js"
+date: "2026-05-22"
+excerpt: "A short sample note about pairing interface design decisions with static Next.js content."
+tags:
+  - Design
+  - Next.js
+  - Web Dev
+author: "Starter Content"
+coverImage: "/starter-diagram.svg"
+---
+
+This sample note gives tag pages another realistic post to list. It is intentionally brief and ready to replace.
+
+![Simple local diagram for a starter design post](/starter-diagram.svg)
+
+## A tiny design checklist
+
+- Keep headings scannable.
+- Pair every visual with helpful alt text.
+- Use consistent tags so archive pages feel populated.
+
+The same content can support readers and tooling: humans get structure, while static route generation gets predictable params.
+
+```ts title="content-tags.ts" {3}
+export const starterTags = [
+  'Design',
+  'Next.js',
+  'Web Dev',
+]
+```
+
+> Replace this with a real design journal, launch note, or tutorial when you are ready.