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/web/internal-edge-wait-until.js

@@ -0,0 +1,64 @@
+// An internal module to expose the "waitUntil" API to Edge SSR and Edge Route Handler functions.
+// This is highly experimental and subject to change.
+// We still need a global key to bypass Webpack's layering of modules.
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    internal_getCurrentFunctionWaitUntil: null,
+    internal_runWithWaitUntil: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    internal_getCurrentFunctionWaitUntil: function() {
+        return internal_getCurrentFunctionWaitUntil;
+    },
+    internal_runWithWaitUntil: function() {
+        return internal_runWithWaitUntil;
+    }
+});
+const GLOBAL_KEY = Symbol.for('__next_internal_waitUntil__');
+const state = // @ts-ignore
+globalThis[GLOBAL_KEY] || // @ts-ignore
+(globalThis[GLOBAL_KEY] = {
+    waitUntilCounter: 0,
+    waitUntilResolve: undefined,
+    waitUntilPromise: null
+});
+// No matter how many concurrent requests are being handled, we want to make sure
+// that the final promise is only resolved once all of the waitUntil promises have
+// settled.
+function resolveOnePromise() {
+    state.waitUntilCounter--;
+    if (state.waitUntilCounter === 0) {
+        state.waitUntilResolve();
+        state.waitUntilPromise = null;
+    }
+}
+function internal_getCurrentFunctionWaitUntil() {
+    return state.waitUntilPromise;
+}
+function internal_runWithWaitUntil(fn) {
+    const result = fn();
+    if (result && typeof result === 'object' && 'then' in result && 'finally' in result && typeof result.then === 'function' && typeof result.finally === 'function') {
+        if (!state.waitUntilCounter) {
+            // Create the promise for the next batch of waitUntil calls.
+            state.waitUntilPromise = new Promise((resolve)=>{
+                state.waitUntilResolve = resolve;
+            });
+        }
+        state.waitUntilCounter++;
+        return result.finally(()=>{
+            resolveOnePromise();
+        });
+    }
+    return result;
+}
+
+//# sourceMappingURL=internal-edge-wait-until.js.map