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/server.d.ts

@@ -0,0 +1,22 @@
+import type { AsyncLocalStorage as NodeAsyncLocalStorage } from 'async_hooks'
+
+declare global {
+  var AsyncLocalStorage: typeof NodeAsyncLocalStorage
+}
+
+export { NextFetchEvent } from 'next/dist/server/web/spec-extension/fetch-event'
+export { NextRequest } from 'next/dist/server/web/spec-extension/request'
+export { NextResponse } from 'next/dist/server/web/spec-extension/response'
+export {
+  NextMiddleware,
+  MiddlewareConfig,
+  NextProxy,
+  ProxyConfig,
+} from 'next/dist/server/web/types'
+export { userAgentFromString } from 'next/dist/server/web/spec-extension/user-agent'
+export { userAgent } from 'next/dist/server/web/spec-extension/user-agent'
+export { URLPattern } from 'next/dist/compiled/@edge-runtime/primitives/url'
+export { ImageResponse } from 'next/dist/server/web/spec-extension/image-response'
+export type { ImageResponseOptions } from 'next/dist/compiled/@vercel/og/types'
+export { after } from 'next/dist/server/after'
+export { connection } from 'next/dist/server/request/connection'