feat: update experience to 15+, rename MoltBot to OpenClaw, add Mercor image, refresh OG previews

- Update "10+" to "15+" years experience across homepage and about page
- Rename MoltBot to OpenClaw for automated Twitch project
- Add Mercor homepage screenshot as project card image
- Replace outdated 3.6MB OG/Twitter preview images with fresh 160KB homepage screenshots

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Jonathan Pohlner

public/opengraph-image.png

@@ -6,7 +6,7 @@ import CTABanner from '@/components/molecular/CTABanner';
 export const metadata: Metadata = {
   title: 'About | Jonathan Pohlner',
   description:
-    'Full Stack Developer with 10+ years building accessible web applications and 20+ years in graphic design.',
+    'Full Stack Developer with 15+ years building accessible web applications and 20+ years in graphic design.',
 };
 
 const EXPERIENCE: TimelineEntry[] = [
@@ -127,7 +127,7 @@ export default function AboutPage() {
             About Me
           </h1>
           <p className="text-base-content/70 mx-auto max-w-2xl text-lg leading-relaxed">
-            Full Stack Developer with 10+ years building accessible web
+            Full Stack Developer with 15+ years building accessible web
             applications and 20+ years in graphic design. I specialize in React,
             TypeScript, and Next.js — turning complex problems into clean,
             maintainable solutions.

public/portfolio/other/mercor-ai.png

@@ -14,7 +14,7 @@ import CTABanner from '@/components/molecular/CTABanner';
 
 const STATS: readonly TemplateStat[] = [
   {
-    value: '10+',
+    value: '15+',
     label: 'Years Experience',
     detail: 'Web development & design',
     href: '/about',
@@ -115,9 +115,9 @@ const OTHER_PROJECTS = [
     href: 'https://tortoisewolfe.github.io/The_House_that_Code_Built/',
   },
   {
-    title: 'MoltBot / Automated Twitch',
+    title: 'OpenClaw / Automated Twitch',
     description:
-      'AI-powered 24/7 Twitch channel using Remotion for programmatic video generation and MoltBot agent pipeline.',
+      'AI-powered 24/7 Twitch channel using Remotion for programmatic video generation and OpenClaw agent pipeline.',
     image: {
       src: '/portfolio/other/scripthammer-twitch.png',
       alt: 'ScriptHammer automated Twitch channel showing AI-generated content',
@@ -129,6 +129,10 @@ const OTHER_PROJECTS = [
     title: 'Mercor AI Evaluation',
     description:
       'A/B testing framework for evaluating AI coding assistants — Python validation tools, multi-track test orchestration, behavioral analysis.',
+    image: {
+      src: '/portfolio/other/mercor-ai.png',
+      alt: 'Mercor AI platform — Shape the future of AI',
+    },
     stack: ['Python', 'Docker', 'Bash', 'tmux'],
     href: 'https://github.com/TortoiseWolfe',
   },
@@ -293,7 +297,7 @@ export default function Home() {
             </p>
 
             <p className="text-base-content/80 mb-6 max-w-2xl text-lg leading-relaxed sm:text-xl">
-              10+ years building accessible web applications with React,
+              15+ years building accessible web applications with React,
               TypeScript, and Next.js. 20+ years in graphic design.
             </p>