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/shared/lib/is-internal.js

@@ -0,0 +1,39 @@
+/** React that's compiled with `next`. Used by App Router. */ "use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    default: null,
+    nextInternalsRe: null,
+    reactNodeModulesRe: null,
+    reactVendoredRe: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    default: function() {
+        return isInternal;
+    },
+    nextInternalsRe: function() {
+        return nextInternalsRe;
+    },
+    reactNodeModulesRe: function() {
+        return reactNodeModulesRe;
+    },
+    reactVendoredRe: function() {
+        return reactVendoredRe;
+    }
+});
+const reactVendoredRe = /[\\/]next[\\/]dist[\\/]compiled[\\/](react|react-dom|react-server-dom-(webpack|turbopack)|scheduler)[\\/]/;
+const reactNodeModulesRe = /node_modules[\\/](react|react-dom|scheduler)[\\/]/;
+const nextInternalsRe = /(node_modules[\\/]next[\\/]|[\\/].next[\\/]static[\\/]chunks[\\/]webpack\.js$|(edge-runtime-webpack|webpack-runtime)\.js$)/;
+function isInternal(file) {
+    if (!file) return false;
+    return nextInternalsRe.test(file) || reactVendoredRe.test(file) || reactNodeModulesRe.test(file);
+}
+
+//# sourceMappingURL=is-internal.js.map