Add splash intro, nuclear games + consulting, Cherenkov hero

- Splash: full-viewport animated SUCH logo cover with four corner nav
  buttons; reveals the site once "entered" (scroll-through or Explore) and
  does not resurrect on scroll-up. Original hero restored beneath it
  (title-anchored monitor pulse + Cherenkov-blue background).
- Logo: traveling Cherenkov glow ring + gentle letter breath (SVG/Framer,
  reduced-motion safe); beveled glass corner buttons.
- Services: new "Nuclear & Radiation Modeling" section + "Consulting"
  umbrella (payments, crypto, nuclear), MCNP Google Scholar link, and a
  not-a-licensed-PE clarification.
- About/founder bio: LLNL credibility + accessibility, art101.io link.
- Products: add Barns & Neutrons, Alpha Doc, Decay Theory (detail pages,
  OG cards, SVG icons); client-side sortable grid with coming-soon at the
  bottom. New Neroswap + Custom Websites icons (de-duplicated).
- SEO: game pages added to sitemap.
- Copy: dial back em-dashes to colons/commas/parens on home + services.

apps/web/src/components/about/founder-signature.tsx

@@ -38,10 +38,10 @@ export const FounderSignature = () => {
             "Accessibility isn't bolted on. It's there from the first line of code."
           </p>
           <p className="text-muted-foreground leading-relaxed mt-6">
-            John Winter Murphy holds a <span className="text-foreground font-semibold">PhD in Materials Engineering from UT-Dallas (2014)</span>, focused on semiconductor device fabrication for radiation detectors. From <span className="text-foreground font-semibold">2015 to 2021 he was a scientist at Lawrence Livermore National Laboratory</span>, developing radiation detector systems and the lab's nuclear battery program.
+            John Winter Murphy holds a <span className="text-foreground font-semibold">PhD in Materials Engineering from UT-Dallas (2014)</span>, focused on semiconductor devices for radiation detection. From <span className="text-foreground font-semibold">2015 to 2021 he was a scientist at Lawrence Livermore National Laboratory</span>, developing radiation detector systems and the lab's radioisotope battery program. He brings that same lab-bench rigor to software, and an insistence that it stay <span className="text-foreground font-semibold">accessible to everyone</span>, audited to WCAG 2.2.
           </p>
           <p className="text-muted-foreground leading-relaxed mt-4">
-            He previously co-founded <span className="text-foreground font-semibold">Patrn LLC</span> (art101.io), a series of art-history NFT drops, and <span className="text-foreground font-semibold">Tabby Labs</span>, which was developing a cryptocurrency wallet with an interactive world inside.
+            He previously co-founded <span className="text-foreground font-semibold">Patrn LLC</span> (<a href="https://art101.io" target="_blank" rel="noopener noreferrer" className="text-foreground font-semibold underline decoration-primary/50 hover:text-primary transition-colors">art101.io</a>), a series of art-history NFT drops, and <span className="text-foreground font-semibold">Tabby Labs</span>, which was developing a cryptocurrency wallet with an interactive world inside.
           </p>
           <p className="text-muted-foreground leading-relaxed mt-4">
             He most recently taught engineering at <span className="text-foreground font-semibold">Cecil College</span> and senior-level materials engineering (microfabrication, nanomaterials) at <span className="text-foreground font-semibold">Frostburg State University</span>. Active in cryptocurrency since 2014, with a public track record on <a href="https://github.com/jwinterm" target="_blank" rel="noopener noreferrer" className="text-foreground font-semibold underline decoration-primary/50 hover:text-primary transition-colors">GitHub</a>.