feat: binary glow effects, refined drawings and calls to action

Dark surfaces now carry light: frames glow along their edge and shed binary
digits (BitAura), dark sections open with a lit seam (BitSeam), the career
path is a line of light and "My work" became a dark stage. Buttons carry a
travelling light and a spot that follows the pointer (BitGlow).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/components/home/PortraitSection.tsx

@@ -1,5 +1,6 @@
 "use client";
 
+import { BitSeam } from "@/src/components/bits/BitSeam";
 import * as React from "react";
 import Image from "next/image";
 import { motion } from "framer-motion";
@@ -32,12 +33,14 @@ export const PortraitSection: React.FC<{
     >
       <Image
         src="/marc-mintel.png"
-        alt="Portrait of Marc Mintel"
+        alt="Marc Mintel, freelance web developer"
         fill
         sizes="(min-width: 768px) 62vw, 100vw"
         className="object-cover object-[50%_18%] grayscale"
         priority={false}
       />
+      {/* Slow light behind the fades, so the dark surface is not flat. */}
+      <div className="bit-aurora" aria-hidden="true" />
       {/* Fades: into the surface on the left, and at top and bottom. */}
       <div className="absolute inset-0 hidden bg-gradient-to-r from-slate-900 via-slate-900/75 to-slate-900/10 md:block" />
       <div className="absolute inset-x-0 bottom-0 h-2/5 bg-gradient-to-t from-slate-900 to-transparent" />
@@ -72,5 +75,6 @@ export const PortraitSection: React.FC<{
         <div className="mt-10 md:mt-14">{children}</div>
       </motion.div>
     </div>
+    <BitSeam density={1} />
   </section>
 );