Implement Astro features: React Islands, Server Endpoints, i18n, Partytown

Features added:
- React integration with @astrojs/react
- React components: DMRDashboard, MemberSearch
- API endpoints: /api/repeaters.json, /api/dmr-contacts.json, /api/feed/[category].xml
- i18n support for TR/EN locales with LanguageSwitcher component
- Partytown enabled for third-party script optimization
- Admin panel logo fixed (moved to public/images/)

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

astro.config.ts

@@ -15,61 +15,57 @@ import astrowind from './vendor/integration';
 
 import { readingTimeRemarkPlugin, responsiveTablesRehypePlugin, lazyImagesRehypePlugin } from './src/utils/frontmatter';
 
+import react from '@astrojs/react';
+
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
-const hasExternalScripts = false;
+const hasExternalScripts = true;
 const whenExternalScripts = (items: (() => AstroIntegration) | (() => AstroIntegration)[] = []) =>
   hasExternalScripts ? (Array.isArray(items) ? items.map((item) => item()) : [items()]) : [];
 
 export default defineConfig({
   output: 'static',
 
-  integrations: [
-    tailwind({
-      applyBaseStyles: false,
-    }),
-    sitemap(),
-    mdx(),
-    icon({
-      include: {
-        tabler: ['*'],
-        'flat-color-icons': [
-          'template',
-          'gallery',
-          'approval',
-          'document',
-          'advertising',
-          'currency-exchange',
-          'voice-presentation',
-          'business-contact',
-          'database',
-        ],
+  integrations: [tailwind({
+    applyBaseStyles: false,
+  }), sitemap(), mdx(), icon({
+    include: {
+      tabler: ['*'],
+      'flat-color-icons': [
+        'template',
+        'gallery',
+        'approval',
+        'document',
+        'advertising',
+        'currency-exchange',
+        'voice-presentation',
+        'business-contact',
+        'database',
+      ],
+    },
+  }), ...whenExternalScripts(() =>
+    partytown({
+      config: { forward: ['dataLayer.push'] },
+    })
+  ), compress({
+    CSS: true,
+    HTML: {
+      'html-minifier-terser': {
+        removeAttributeQuotes: false,
       },
-    }),
+    },
+    Image: true,
+    JavaScript: true,
+    SVG: true,
+    Logger: 1,
+  }), astrowind({
+    config: './src/config.yaml',
+  }), react()],
 
-    ...whenExternalScripts(() =>
-      partytown({
-        config: { forward: ['dataLayer.push'] },
-      })
-    ),
-
-    compress({
-      CSS: true,
-      HTML: {
-        'html-minifier-terser': {
-          removeAttributeQuotes: false,
-        },
-      },
-      Image: true,
-      JavaScript: true,
-      SVG: true,
-      Logger: 1,
-    }),
-
-    astrowind({
-      config: './src/config.yaml',
-    }),
-  ],
+  i18n: {
+    defaultLocale: 'tr',
+    locales: ['tr', 'en'],
+  },
 
   image: {
     domains: ['cdn.pixabay.com'],
@@ -87,4 +83,4 @@ export default defineConfig({
       },
     },
   },
-});
+});