refactor: rename 'Releases' to 'Documentatie'

Changed terminology from release notes to feature documentation
to better reflect the continuous build-in-public approach.

Changes:
- Navigation: "Releases" → "Documentatie"
- Page titles: "Release Notes" → "Feature Documentatie"
- Metadata descriptions updated
- Timeline link text updated
- Sidebar heading updated
- Template and example docs updated

The /releases route remains the same for stability,
but all user-facing text now says "Documentatie".

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/(marketing)/components/build-timeline.tsx

@@ -240,12 +240,12 @@ export const BuildTimeline = ({ data }: BuildTimelineProps) => {
                 </div>
               )}
 
-              {/* Link to detailed release notes */}
+              {/* Link to detailed documentation */}
               <a
                 href="/releases"
                 className="inline-flex items-center gap-2 text-teal-600 hover:text-teal-700 font-medium text-sm transition-colors"
               >
-                <span>Bekijk gedetailleerde release notes</span>
+                <span>Bekijk uitgebreide documentatie</span>
                 <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                   <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
                 </svg>

app/(marketing)/releases/[category]/page.tsx

@@ -36,7 +36,7 @@ export async function generateMetadata({ params }: ReleasePageProps) {
   }
 
   return {
-    title: `${release.frontmatter.title} - Release Notes`,
+    title: `${release.frontmatter.title} - Documentatie`,
     description: release.frontmatter.description,
   }
 }

app/(marketing)/releases/components/release-sidebar.tsx

@@ -82,7 +82,7 @@ export function ReleaseSidebar({ releases, metadata }: ReleaseSidebarProps) {
       <aside className="hidden lg:block w-64 fixed top-16 bottom-0 bg-white border-r border-slate-200 overflow-y-auto">
         <div className="p-6">
           <h2 className="text-xs font-semibold text-slate-500 uppercase tracking-wide mb-4">
-            Release Notes
+            Documentatie
           </h2>
 
           <nav className="space-y-1">

app/(marketing)/releases/page.tsx

@@ -8,8 +8,8 @@ import Link from 'next/link'
 import { getAllReleases } from '@/lib/mdx/releases'
 
 export const metadata = {
-  title: 'Release Notes - AI Speedrun',
-  description: 'Volledige changelog van het Mini-ECD prototype. Transparant build-in-public overzicht van features, fixes en improvements.',
+  title: 'Documentatie - AI Speedrun',
+  description: 'Feature documentatie van het Mini-ECD prototype. Transparant build-in-public overzicht van gebouwde functionaliteit.',
 }
 
 export default async function ReleasesPage() {
@@ -26,10 +26,10 @@ export default async function ReleasesPage() {
         {/* Header */}
         <div className="mb-12">
           <h1 className="text-4xl md:text-5xl font-bold text-slate-900 mb-4">
-            Release Notes
+            Feature Documentatie
           </h1>
           <p className="text-xl text-slate-600 max-w-3xl">
-            Volledige changelog van het Mini-ECD prototype. Build in public met transparantie over features, tijd en kosten.
+            Uitgebreide documentatie van alle gebouwde functionaliteit. Build in public met transparantie over features, implementatie en kosten.
           </p>
         </div>