Initial portfolio site: Astro + Tailwind MVP

Outcome-led hero, about, grouped skills, experience summary, featured
projects + /projects index, static contact, SEO/OG, dark/light theme.
Dockerfile + nginx config + build script for homelab deploy.

tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "extends": "astro/tsconfigs/strict",
+  "include": [".astro/types.d.ts", "**/*"],
+  "exclude": ["dist"]
+}