feat(website): add Pricing dropdown nav with Licensing and Services anchors

Add hover dropdown to Pricing nav entry with Licensing and Services links.
Add id="services" anchor to professional services section. Fix footer
copyright to reflect AGPLv3 + Commercial License.

Author: ndreno

src/layouts/Layout.astro

@@ -137,7 +137,16 @@ const structuredData = type === 'article' && article
             <a href="/#features" class="text-foreground-muted hover:text-primary transition-colors">Features</a>
             <a href="/#use-cases" class="text-foreground-muted hover:text-primary transition-colors">Use Cases</a>
             <a href="/blog/" class="text-foreground-muted hover:text-primary transition-colors">Blog</a>
-            <a href="/pricing/" class="text-foreground-muted hover:text-primary transition-colors">Services</a>
+            <div class="relative group">
+              <button class="text-foreground-muted hover:text-primary transition-colors flex items-center gap-1">
+                Pricing
+                <svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"></path></svg>
+              </button>
+              <div class="absolute top-full left-0 mt-2 w-40 nav-bg border border-themed rounded-lg shadow-lg opacity-0 invisible group-hover:opacity-100 group-hover:visible transition-all duration-150">
+                <a href="/pricing/" class="block px-4 py-2.5 text-sm text-foreground-muted hover:text-primary hover:bg-background-light rounded-t-lg transition-colors">Licensing</a>
+                <a href="/pricing/#services" class="block px-4 py-2.5 text-sm text-foreground-muted hover:text-primary hover:bg-background-light rounded-b-lg transition-colors">Services</a>
+              </div>
+            </div>
             <a href="https://github.com/barbacane-dev/barbacane" target="_blank" rel="noopener" class="text-foreground-muted hover:text-primary transition-colors">GitHub</a>
           </div>
 
@@ -173,7 +182,8 @@ const structuredData = type === 'article' && article
           <a href="/#features" class="block text-foreground-muted hover:text-primary transition-colors py-2">Features</a>
           <a href="/#use-cases" class="block text-foreground-muted hover:text-primary transition-colors py-2">Use Cases</a>
           <a href="/blog/" class="block text-foreground-muted hover:text-primary transition-colors py-2">Blog</a>
-          <a href="/pricing/" class="block text-foreground-muted hover:text-primary transition-colors py-2">Services</a>
+          <a href="/pricing/" class="block text-foreground-muted hover:text-primary transition-colors py-2">Licensing</a>
+          <a href="/pricing/#services" class="block text-foreground-muted hover:text-primary transition-colors py-2">Services</a>
           <a href="https://github.com/barbacane-dev/barbacane" target="_blank" rel="noopener" class="block text-foreground-muted hover:text-primary transition-colors py-2">GitHub</a>
           <a href="https://docs.barbacane.dev" class="block text-foreground-muted hover:text-primary transition-colors py-2">Documentation</a>
           <a href="/#get-started" class="block text-foreground-muted hover:text-primary transition-colors py-2">Get Started</a>
@@ -253,7 +263,7 @@ const structuredData = type === 'article' && article
 
         <div class="border-t border-themed mt-8 pt-8 flex flex-col sm:flex-row justify-between items-center gap-4">
           <p class="text-foreground-muted text-sm">
-            &copy; {new Date().getFullYear()} Barbacane. Open source under Apache 2.0.
+            &copy; {new Date().getFullYear()} Barbacane. AGPLv3 &amp; Commercial License.
           </p>
           <p class="text-foreground-muted text-sm">
             <a href="/trademarks/" class="hover:text-primary transition-colors">Trademark Policy</a>

src/pages/pricing.astro

@@ -118,7 +118,7 @@ import Layout from '../layouts/Layout.astro';
   </section>
 
   <!-- Professional Services Header -->
-  <section class="section pt-0">
+  <section id="services" class="section pt-0">
     <div class="container-custom">
       <div class="max-w-4xl mx-auto text-center">
         <h2 class="text-3xl sm:text-4xl font-extrabold mb-4">