feat(portfolio): add hero command deck with canvas signal grid

components/portfolio/Hero.tsx

@@ -6,17 +6,17 @@ import { HeroCanvas } from "./HeroCanvas";
 
 const paletteEventName = "blacksite:palette";
 
+function openCommandPalette() {
+  if (typeof window === "undefined") {
+    return;
+  }
+
+  window.dispatchEvent(new CustomEvent(paletteEventName));
+}
+
 export function Hero() {
   const shouldReduceMotion = useReducedMotion();
 
-  const openCommandPalette = () => {
-    if (typeof window === "undefined") {
-      return;
-    }
-
-    window.dispatchEvent(new CustomEvent(paletteEventName));
-  };
-
   return (
     <section
       aria-labelledby="hero-heading"

components/portfolio/HeroCanvas.tsx

@@ -176,8 +176,10 @@ export function HeroCanvas() {
     };
 
     resize();
-    resizeObserver = new ResizeObserver(resize);
-    resizeObserver.observe(canvas);
+    if ("ResizeObserver" in window) {
+      resizeObserver = new ResizeObserver(resize);
+      resizeObserver.observe(canvas);
+    }
     window.addEventListener("resize", resize, { passive: true });
 
     if (!shouldReduceMotion) {