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/shared/lib/html-context.shared-runtime.d.ts

@@ -0,0 +1,50 @@
+import type { BuildManifest } from '../../server/get-page-files';
+import type { ServerRuntime } from '../../types';
+import type { NEXT_DATA } from './utils';
+import type { NextFontManifest } from '../../build/webpack/plugins/next-font-manifest-plugin';
+import type { DeepReadonly } from './deep-readonly';
+import { type JSX } from 'react';
+export type HtmlProps = {
+    __NEXT_DATA__: NEXT_DATA;
+    nonce?: string;
+    dangerousAsPath: string;
+    docComponentsRendered: {
+        Html?: boolean;
+        Main?: boolean;
+        Head?: boolean;
+        NextScript?: boolean;
+    };
+    buildManifest: BuildManifest;
+    isDevelopment: boolean;
+    dynamicImports: string[];
+    /**
+     * This manifest is only needed for Pages dir, Production, Webpack
+     * @see https://github.com/vercel/next.js/pull/72959
+     */
+    dynamicCssManifest: Set<string>;
+    assetPrefix?: string;
+    headTags: any[];
+    unstable_runtimeJS?: false;
+    unstable_JsPreload?: false;
+    assetQueryString: string;
+    scriptLoader: {
+        afterInteractive?: string[];
+        beforeInteractive?: any[];
+        worker?: any[];
+    };
+    locale?: string;
+    disableOptimizedLoading?: boolean;
+    styles?: React.ReactElement[] | Iterable<React.ReactNode>;
+    head?: Array<JSX.Element | null>;
+    crossOrigin?: 'anonymous' | 'use-credentials' | '' | undefined;
+    optimizeCss?: any;
+    nextConfigOutput?: 'standalone' | 'export';
+    nextScriptWorkers?: boolean;
+    runtime?: ServerRuntime;
+    hasConcurrentFeatures?: boolean;
+    largePageDataBytes?: number;
+    nextFontManifest?: DeepReadonly<NextFontManifest>;
+    experimentalClientTraceMetadata?: string[];
+};
+export declare const HtmlContext: import("react").Context<HtmlProps | undefined>;
+export declare function useHtmlContext(): HtmlProps;