Convert dangrubb.net to Astro framework

- Migrated main site, blog, CV, and music sections to Astro
- Component-based architecture with layouts
- JSON-based blog posts
- Static site generation
- Preserved original styling and functionality

src/layouts/Base.astro

@@ -0,0 +1,37 @@
+---
+const { title } = Astro.props;
+---
+
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>{title}</title>
+    <link rel="icon" href="/src/img/favicon.ico" type="image/x-icon" />
+  </head>
+  <body>
+    <slot />
+  </body>
+</html>
+
+<style is:global>
+  * { box-sizing: border-box; margin: 0; padding: 0; }
+
+  body {
+    background: #0d0a14;
+    font-family: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, "DejaVu Sans Mono", monospace;
+    color: #9d9aa4;
+    min-height: 100vh;
+    margin: 0;
+    padding: 0;
+    overflow-x: hidden;
+  }
+
+  a {
+    color: #6be1e9;
+    text-decoration: none;
+  }
+  a:hover, a:visited { opacity: 0.8; }
+  a:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }
+</style>