feat(landing): glass header nav with side drawer + blog section

- Header: full glassmorphism navigation (services, pricing, estimator, learn,
  blog). Desktop shows an inline glass pill; mobile opens a side drawer that
  slides in from the inline-start edge (right in RTL, left in LTR) over a
  blurred backdrop.
- Nav links smooth-scroll via the shared Lenis instance (exposed through
  scroll-store: setLenis/scrollToId), with an 80px offset under the header.
- "Learn" links to the existing how-it-works steps (id="learn"); add a
  lightweight Blog teaser section (id="blog", "coming soon" cards).
- i18n: fa/en strings for nav and blog.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/i18n/dictionaries/en.ts

@@ -57,6 +57,14 @@ const en: Dictionary = {
 
   landing: {
     badge: 'Self-service cloud platform',
+    nav: {
+      services: 'Services',
+      pricing: 'Pricing',
+      estimator: 'Estimate',
+      learn: 'Learn',
+      blog: 'Blog',
+      menu: 'Menu',
+    },
     hero: {
       title: 'Abrban',
       tagline: 'Cloud infrastructure, in your control',
@@ -176,6 +184,18 @@ const en: Dictionary = {
       currency: 'Toman',
       error: 'Could not calculate cost.',
     },
+    blog: {
+      title: 'Blog & guides',
+      subtitle: 'Guides and the latest writing to help you build faster on Abrban.',
+      comingSoon: 'Coming soon',
+      cta: 'View all articles',
+      readMore: 'Read more',
+      posts: [
+        { tag: 'Getting started', title: 'Ship your first app in minutes', desc: 'From connecting a repo to a domain and automatic SSL — step by step.' },
+        { tag: 'Cost optimization', title: 'Pick the right resources and pay less', desc: 'Tune CPU, memory, replicas and add-on services wisely.' },
+        { tag: 'Security', title: 'Custom domains with automatic SSL', desc: 'Connect your domain and let Abrban issue and renew the certificate.' },
+      ],
+    },
     finalCta: {
       titleLead: 'The sky is clear; it’s time to ',
       titleHighlight: 'go live',