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/client/components/client-segment.d.ts

@@ -0,0 +1,19 @@
+import type { Params } from '../../server/request/params';
+/**
+ * When the Page is a client component we send the params to this client wrapper
+ * where they are turned into dynamically tracked values before being passed to the actual Segment component.
+ *
+ * additionally we may send a promise representing params. We don't ever use this passed
+ * value but it can be necessary for the sender to send a Promise that doesn't resolve in certain situations
+ * such as when cacheComponents is enabled. It is up to the caller to decide if the promises are needed.
+ */
+export declare function ClientSegmentRoot({ Component, slots, serverProvidedParams, }: {
+    Component: React.ComponentType<any>;
+    slots: {
+        [key: string]: React.ReactNode;
+    };
+    serverProvidedParams: null | {
+        params: Params;
+        promises: Array<Promise<any>> | null;
+    };
+}): import("react/jsx-runtime").JSX.Element;