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/autoprefixer/lib/hacks/flex-wrap.js

@@ -0,0 +1,19 @@
+let Declaration = require('../declaration')
+let flexSpec = require('./flex-spec')
+
+class FlexWrap extends Declaration {
+  /**
+   * Don't add prefix for 2009 spec
+   */
+  set(decl, prefix) {
+    let spec = flexSpec(prefix)[0]
+    if (spec !== 2009) {
+      return super.set(decl, prefix)
+    }
+    return undefined
+  }
+}
+
+FlexWrap.names = ['flex-wrap']
+
+module.exports = FlexWrap