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/web/adapter.d.ts

@@ -0,0 +1,28 @@
+import type { RequestData, FetchEventResult } from './types';
+import type { RequestInit } from './spec-extension/request';
+import { NextFetchEvent } from './spec-extension/fetch-event';
+import { NextRequest } from './spec-extension/request';
+export declare class NextRequestHint extends NextRequest {
+    sourcePage: string;
+    fetchMetrics: FetchEventResult['fetchMetrics'] | undefined;
+    constructor(params: {
+        init: RequestInit;
+        input: Request | string;
+        page: string;
+    });
+    get request(): void;
+    respondWith(): void;
+    waitUntil(): void;
+}
+export type AdapterOptions = {
+    handler: (req: NextRequestHint, event: NextFetchEvent) => Promise<Response>;
+    page: string;
+    request: RequestData;
+    IncrementalCache?: typeof import('../lib/incremental-cache').IncrementalCache;
+    incrementalCacheHandler?: typeof import('../lib/incremental-cache').CacheHandler;
+    bypassNextUrl?: boolean;
+};
+export type EdgeHandler = (opts: {
+    request: AdapterOptions['request'];
+}) => Promise<FetchEventResult>;
+export declare function adapter(params: AdapterOptions): Promise<FetchEventResult>;