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/next-devtools/dev-overlay/panel/dynamic-panel.d.ts

@@ -0,0 +1,26 @@
+import './dynamic-panel.css';
+export declare function DynamicPanel({ header, children, draggable, sizeConfig, closeOnClickOutside, sharePanelSizeGlobally, sharePanelPositionGlobally, containerProps, }: {
+    header: React.ReactNode;
+    children: React.ReactNode;
+    draggable?: boolean;
+    sharePanelSizeGlobally?: boolean;
+    sharePanelPositionGlobally?: boolean;
+    containerProps?: React.HTMLProps<HTMLDivElement>;
+    sizeConfig?: {
+        kind: 'resizable';
+        minWidth: string | number;
+        minHeight: string | number;
+        maxWidth: string | number;
+        maxHeight: string | number;
+        initialSize: {
+            height: number;
+            width: number;
+        };
+        sides?: Array<'horizontal' | 'vertical' | 'diagonal'>;
+    } | {
+        kind: 'fixed';
+        height: number;
+        width: number;
+    };
+    closeOnClickOutside?: boolean;
+}): import("react/jsx-runtime").JSX.Element;