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/build/collect-build-traces.d.ts

@@ -0,0 +1,15 @@
+import { Span } from '../trace';
+import type { NextConfigComplete } from '../server/config-shared';
+import { type BuildTraceContext } from './webpack/plugins/next-trace-entrypoints-plugin';
+import type { RoutesUsingEdgeRuntime } from './utils';
+export declare const makeIgnoreFn: (root: string, ignores: string[]) => (pathname: string) => boolean;
+export declare function collectBuildTraces({ dir, config, distDir, edgeRuntimeRoutes, staticPages, nextBuildSpan, buildTraceContext, outputFileTracingRoot, }: {
+    dir: string;
+    distDir: string;
+    staticPages: string[];
+    outputFileTracingRoot: string;
+    edgeRuntimeRoutes: RoutesUsingEdgeRuntime;
+    nextBuildSpan?: Span;
+    config: NextConfigComplete;
+    buildTraceContext?: BuildTraceContext;
+}): Promise<void>;