Initial commit: Astro 6 static blog site

- German (default) and English i18n support
- Categories and tags
- Blog posts with hero images
- Dark/light theme switcher
- View Transitions removed to fix reload ghost images
- Webmentions integration
- RSS feeds per locale

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

astro.config.mjs

@@ -0,0 +1,75 @@
+// @ts-check
+
+import mdx from '@astrojs/mdx';
+import sitemap from '@astrojs/sitemap';
+import { defineConfig, fontProviders } from 'astro/config';
+import { loadEnv } from 'vite';
+
+import node from '@astrojs/node';
+
+const envMode = process.env.NODE_ENV === 'production' ? 'production' : 'development';
+const envVars = loadEnv(envMode, process.cwd(), '');
+const WEBMENTION_TOKEN = envVars.WEBMENTION_TOKEN || process.env.WEBMENTION_TOKEN || '';
+
+// https://astro.build/config
+export default defineConfig({
+  site: 'https://adrian-altner.de',
+
+  vite: {
+    define: {
+      'globalThis.__WEBMENTION_TOKEN__': JSON.stringify(WEBMENTION_TOKEN),
+    },
+  },
+
+  devToolbar: {
+      enabled: false,
+	},
+
+  i18n: {
+      defaultLocale: 'de',
+      locales: ['de', 'en'],
+      routing: {
+          prefixDefaultLocale: false,
+          redirectToDefaultLocale: false,
+      },
+	},
+
+  integrations: [
+      mdx(),
+      sitemap({
+          i18n: {
+              defaultLocale: 'de',
+              locales: { de: 'de-DE', en: 'en-US' },
+          },
+      }),
+	],
+
+  fonts: [
+      {
+          provider: fontProviders.local(),
+          name: 'Atkinson',
+          cssVariable: '--font-atkinson',
+          fallbacks: ['sans-serif'],
+          options: {
+              variants: [
+                  {
+                      src: ['./src/assets/fonts/atkinson-regular.woff'],
+                      weight: 400,
+                      style: 'normal',
+                      display: 'swap',
+                  },
+                  {
+                      src: ['./src/assets/fonts/atkinson-bold.woff'],
+                      weight: 700,
+                      style: 'normal',
+                      display: 'swap',
+                  },
+              ],
+          },
+      },
+	],
+
+  adapter: node({
+    mode: 'standalone',
+  }),
+});