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.d.ts

@@ -0,0 +1,85 @@
+import type { RenderOpts, PreloadCallbacks } from './types';
+import type { ActionResult, DynamicParamTypesShort, FlightRouterState, Segment, CacheNodeSeedData } from '../../shared/lib/app-router-types';
+import { type WorkStore } from '../app-render/work-async-storage.external';
+import type { RequestStore } from '../app-render/work-unit-async-storage.external';
+import type { NextParsedUrlQuery } from '../request-meta';
+import type { AppPageModule } from '../route-modules/app-page/module';
+import type { BaseNextRequest, BaseNextResponse } from '../base-http';
+import RenderResult, { type AppPageRenderResultMetadata } from '../render-result';
+import { type ImplicitTags } from '../lib/implicit-tags';
+import { parseRelativeUrl } from '../../shared/lib/router/utils/parse-relative-url';
+import type { ServerComponentsHmrCache } from '../response-cache';
+import type { OpaqueFallbackRouteParams } from '../request/fallback-params';
+export type GetDynamicParamFromSegment = (segment: string) => DynamicParam | null;
+export type DynamicParam = {
+    param: string;
+    value: string | string[] | null;
+    treeSegment: Segment;
+    type: DynamicParamTypesShort;
+};
+export type GenerateFlight = typeof generateDynamicFlightRenderResult;
+export type AppSharedContext = {
+    buildId: string;
+};
+export type AppRenderContext = {
+    sharedContext: AppSharedContext;
+    workStore: WorkStore;
+    url: ReturnType<typeof parseRelativeUrl>;
+    componentMod: AppPageModule;
+    renderOpts: RenderOpts;
+    parsedRequestHeaders: ParsedRequestHeaders;
+    getDynamicParamFromSegment: GetDynamicParamFromSegment;
+    query: NextParsedUrlQuery;
+    isPrefetch: boolean;
+    isPossibleServerAction: boolean;
+    requestTimestamp: number;
+    appUsingSizeAdjustment: boolean;
+    flightRouterState?: FlightRouterState;
+    requestId: string;
+    htmlRequestId: string;
+    pagePath: string;
+    assetPrefix: string;
+    isNotFoundPath: boolean;
+    nonce: string | undefined;
+    res: BaseNextResponse;
+    /**
+     * For now, the implicit tags are common for the whole route. If we ever start
+     * rendering/revalidating segments independently, they need to move to the
+     * work unit store.
+     */
+    implicitTags: ImplicitTags;
+};
+interface ParsedRequestHeaders {
+    /**
+     * Router state provided from the client-side router. Used to handle rendering
+     * from the common layout down. This value will be undefined if the request is
+     * not a client-side navigation request, or if the request is a prefetch
+     * request.
+     */
+    readonly flightRouterState: FlightRouterState | undefined;
+    readonly isPrefetchRequest: boolean;
+    readonly isRuntimePrefetchRequest: boolean;
+    readonly isRouteTreePrefetchRequest: boolean;
+    readonly isHmrRefresh: boolean;
+    readonly isRSCRequest: boolean;
+    readonly nonce: string | undefined;
+    readonly previouslyRevalidatedTags: string[];
+    readonly requestId: string | undefined;
+    readonly htmlRequestId: string | undefined;
+}
+/**
+ * Produces a RenderResult containing the Flight data for the given request. See
+ * `generateDynamicRSCPayload` for information on the contents of the render result.
+ */
+declare function generateDynamicFlightRenderResult(req: BaseNextRequest, ctx: AppRenderContext, requestStore: RequestStore, options?: {
+    actionResult: ActionResult;
+    skipPageRendering: boolean;
+    componentTree?: CacheNodeSeedData;
+    preloadCallbacks?: PreloadCallbacks;
+    temporaryReferences?: WeakMap<any, string>;
+    waitUntil?: Promise<unknown>;
+}): Promise<RenderResult>;
+export type BinaryStreamOf<T> = ReadableStream<Uint8Array>;
+export type AppPageRender = (req: BaseNextRequest, res: BaseNextResponse, pagePath: string, query: NextParsedUrlQuery, fallbackRouteParams: OpaqueFallbackRouteParams | null, renderOpts: RenderOpts, serverComponentsHmrCache: ServerComponentsHmrCache | undefined, sharedContext: AppSharedContext) => Promise<RenderResult<AppPageRenderResultMetadata>>;
+export declare const renderToHTMLOrFlight: AppPageRender;
+export {};