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/stream-utils/uint8array-helpers.d.ts

@@ -0,0 +1,16 @@
+/**
+ * Find the starting index of Uint8Array `b` within Uint8Array `a`.
+ */
+export declare function indexOfUint8Array(a: Uint8Array, b: Uint8Array): number;
+/**
+ * Check if two Uint8Arrays are strictly equivalent.
+ */
+export declare function isEquivalentUint8Arrays(a: Uint8Array, b: Uint8Array): boolean;
+/**
+ * Remove Uint8Array `b` from Uint8Array `a`.
+ *
+ * If `b` is not in `a`, `a` is returned unchanged.
+ *
+ * Otherwise, the function returns a new Uint8Array instance with size `a.length - b.length`
+ */
+export declare function removeFromUint8Array(a: Uint8Array, b: Uint8Array): Uint8Array<ArrayBufferLike>;