feat(site): redesign with product pages, ecosystem sections and pixel reveal

Add cli/code/office/platform/pricing pages, new home sections
(Ecosystem, FeatureGrid, Faq, WorkflowSteps, BottomCta, ProductEcosystem),
ScrollReveal and PixelTextReveal animation components, brand assets,
and expanded site-content.

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

public/assets/dalcode-app-icon.svg

@@ -0,0 +1,5 @@
+<svg width="1024" height="1024" viewBox="0 0 1024 1024" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <rect width="1024" height="1024" rx="224" fill="#FFFFFF"/>
+  <path d="M340 360L470 506L314 664" stroke="#050505" stroke-width="66" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="M552 608H700" stroke="#050505" stroke-width="58" stroke-linecap="round"/>
+</svg>

public/assets/dalcode-logo-dark.svg

@@ -0,0 +1,5 @@
+<svg width="1024" height="1024" viewBox="0 0 1024 1024" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <rect width="1024" height="1024" rx="224" fill="#141414"/>
+  <path d="M340 360L470 506L314 664" stroke="#F5F5F5" stroke-width="66" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="M552 608H700" stroke="#F5F5F5" stroke-width="58" stroke-linecap="round"/>
+</svg>