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/app-render/create-component-tree.d.ts

@@ -0,0 +1,23 @@
+import type { ComponentType } from 'react';
+import type { CacheNodeSeedData } from '../../shared/lib/app-router-types';
+import type { PreloadCallbacks } from './types';
+import type { LoaderTree } from '../lib/app-dir-module';
+import type { AppRenderContext, GetDynamicParamFromSegment } from './app-render';
+import type { Params } from '../request/params';
+/**
+ * Use the provided loader tree to create the React Component tree.
+ */
+export declare function createComponentTree(props: {
+    loaderTree: LoaderTree;
+    parentParams: Params;
+    rootLayoutIncluded: boolean;
+    injectedCSS: Set<string>;
+    injectedJS: Set<string>;
+    injectedFontPreloadTags: Set<string>;
+    ctx: AppRenderContext;
+    missingSlots?: Set<string>;
+    preloadCallbacks: PreloadCallbacks;
+    authInterrupts: boolean;
+    MetadataOutlet: ComponentType;
+}): Promise<CacheNodeSeedData>;
+export declare function getRootParams(loaderTree: LoaderTree, getDynamicParamFromSegment: GetDynamicParamFromSegment): Params;