feat(blog): add file-based blog with dynamic slugs, MDX content and layout shell

- Introduced blog routing using Next.js App Router
- Implemented dynamic [slug] pages for blog posts
- Added MDX-based content loading via lib/posts
- Integrated shared TopBar layout with navigation
- Established clear content, lib and component separation

apps/public-web/node_modules/next/dist/server/api-utils/web.js

@@ -0,0 +1,17 @@
+// Buffer.byteLength polyfill in the Edge runtime, with only utf8 strings
+// supported at the moment.
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "byteLength", {
+    enumerable: true,
+    get: function() {
+        return byteLength;
+    }
+});
+function byteLength(payload) {
+    return new TextEncoder().encode(payload).buffer.byteLength;
+}
+
+//# sourceMappingURL=web.js.map