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/use-cache/handlers.d.ts

@@ -0,0 +1,34 @@
+import type { CacheHandler } from '../lib/cache-handlers/types';
+/**
+ * Initialize the cache handlers.
+ * @param cacheMaxMemorySize - The maximum memory size of the cache in bytes, if
+ *  not provided, the default memory size will be used.
+ * @returns `true` if the cache handlers were initialized, `false` if they were already initialized.
+ */
+export declare function initializeCacheHandlers(cacheMaxMemorySize: number): boolean;
+/**
+ * Get a cache handler by kind.
+ * @param kind - The kind of cache handler to get.
+ * @returns The cache handler, or `undefined` if it does not exist.
+ * @throws If the cache handlers are not initialized.
+ */
+export declare function getCacheHandler(kind: string): CacheHandler | undefined;
+/**
+ * Get a set iterator over the cache handlers.
+ * @returns An iterator over the cache handlers, or `undefined` if they are not
+ * initialized.
+ */
+export declare function getCacheHandlers(): SetIterator<CacheHandler> | undefined;
+/**
+ * Get a map iterator over the cache handlers (keyed by kind).
+ * @returns An iterator over the cache handler entries, or `undefined` if they
+ * are not initialized.
+ * @throws If the cache handlers are not initialized.
+ */
+export declare function getCacheHandlerEntries(): MapIterator<[string, CacheHandler]> | undefined;
+/**
+ * Set a cache handler by kind.
+ * @param kind - The kind of cache handler to set.
+ * @param cacheHandler - The cache handler to set.
+ */
+export declare function setCacheHandler(kind: string, cacheHandler: CacheHandler): void;