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/lib/patch-fetch.d.ts

@@ -0,0 +1,18 @@
+import type { WorkAsyncStorage } from '../app-render/work-async-storage.external';
+import { type WorkUnitAsyncStorage } from '../app-render/work-unit-async-storage.external';
+type Fetcher = typeof fetch;
+type PatchedFetcher = Fetcher & {
+    readonly __nextPatched: true;
+    readonly __nextGetStaticStore: () => WorkAsyncStorage;
+    readonly _nextOriginalFetch: Fetcher;
+};
+export declare const NEXT_PATCH_SYMBOL: unique symbol;
+export declare function validateRevalidate(revalidateVal: unknown, route: string): undefined | number;
+export declare function validateTags(tags: any[], description: string): string[];
+interface PatchableModule {
+    workAsyncStorage: WorkAsyncStorage;
+    workUnitAsyncStorage: WorkUnitAsyncStorage;
+}
+export declare function createPatchedFetcher(originFetch: Fetcher, { workAsyncStorage, workUnitAsyncStorage }: PatchableModule): PatchedFetcher;
+export declare function patchFetch(options: PatchableModule): void;
+export {};