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/app-render-prerender-utils.d.ts

@@ -0,0 +1,36 @@
+/**
+ * This is a utility function to make scheduling sequential tasks that run back to back easier.
+ * We schedule on the same queue (setTimeout) at the same time to ensure no other events can sneak in between.
+ */
+export declare function prerenderAndAbortInSequentialTasks<R>(prerender: () => Promise<R>, abort: () => void): Promise<R>;
+/**
+ * Like `prerenderAndAbortInSequentialTasks`, but with another task between `prerender` and `abort`,
+ * which allows us to move a part of the render into a separate task.
+ */
+export declare function prerenderAndAbortInSequentialTasksWithStages<R>(prerender: () => Promise<R>, advanceStage: () => void, abort: () => void): Promise<R>;
+export declare class ReactServerResult {
+    private _stream;
+    constructor(stream: ReadableStream<Uint8Array>);
+    tee(): ReadableStream<Uint8Array<ArrayBufferLike>>;
+    consume(): ReadableStream<Uint8Array<ArrayBufferLike>>;
+}
+export type ReactServerPrerenderResolveToType = {
+    prelude: ReadableStream<Uint8Array>;
+};
+export declare function createReactServerPrerenderResult(underlying: Promise<ReactServerPrerenderResolveToType>): Promise<ReactServerPrerenderResult>;
+export declare function createReactServerPrerenderResultFromRender(underlying: ReadableStream<Uint8Array>): Promise<ReactServerPrerenderResult>;
+export declare class ReactServerPrerenderResult {
+    private _chunks;
+    private assertChunks;
+    private consumeChunks;
+    consume(): void;
+    constructor(chunks: Array<Uint8Array>);
+    asUnclosingStream(): ReadableStream<Uint8Array>;
+    consumeAsUnclosingStream(): ReadableStream<Uint8Array>;
+    asStream(): ReadableStream<Uint8Array>;
+    consumeAsStream(): ReadableStream<Uint8Array>;
+}
+export declare function processPrelude(unprocessedPrelude: ReadableStream<Uint8Array>): Promise<{
+    prelude: ReadableStream<Uint8Array<ArrayBufferLike>>;
+    preludeIsEmpty: boolean;
+}>;