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/lib/metadata/is-metadata-route.d.ts

@@ -0,0 +1,53 @@
+import type { PageExtensions } from '../../build/page-extensions-type';
+export declare const STATIC_METADATA_IMAGES: {
+    readonly icon: {
+        readonly filename: "icon";
+        readonly extensions: readonly ["ico", "jpg", "jpeg", "png", "svg"];
+    };
+    readonly apple: {
+        readonly filename: "apple-icon";
+        readonly extensions: readonly ["jpg", "jpeg", "png"];
+    };
+    readonly favicon: {
+        readonly filename: "favicon";
+        readonly extensions: readonly ["ico"];
+    };
+    readonly openGraph: {
+        readonly filename: "opengraph-image";
+        readonly extensions: readonly ["jpg", "jpeg", "png", "gif"];
+    };
+    readonly twitter: {
+        readonly filename: "twitter-image";
+        readonly extensions: readonly ["jpg", "jpeg", "png", "gif"];
+    };
+};
+export declare const DEFAULT_METADATA_ROUTE_EXTENSIONS: string[];
+export declare const getExtensionRegexString: (staticExtensions: readonly string[], dynamicExtensions: readonly string[] | null) => string;
+/**
+ * Matches the static metadata files, e.g. /robots.txt, /sitemap.xml, /favicon.ico, etc.
+ * @param appDirRelativePath the relative file path to app/
+ * @returns if the path is a static metadata file route
+ */
+export declare function isStaticMetadataFile(appDirRelativePath: string): boolean;
+/**
+ * Determine if the file is a metadata route file entry
+ * @param appDirRelativePath the relative file path to app/
+ * @param pageExtensions the js extensions, such as ['js', 'jsx', 'ts', 'tsx']
+ * @param strictlyMatchExtensions if it's true, match the file with page extension, otherwise match the file with default corresponding extension
+ * @returns if the file is a metadata route file
+ */
+export declare function isMetadataRouteFile(appDirRelativePath: string, pageExtensions: PageExtensions, strictlyMatchExtensions: boolean): boolean;
+export declare function isStaticMetadataRoute(route: string): boolean;
+/**
+ * Determine if a page or pathname is a metadata page.
+ *
+ * The input is a page or pathname, which can be with or without page suffix /foo/page or /foo.
+ * But it will not contain the /route suffix.
+ *
+ * .e.g
+ * /robots -> true
+ * /sitemap -> true
+ * /foo -> false
+ */
+export declare function isMetadataPage(page: string): boolean;
+export declare function isMetadataRoute(route: string): boolean;