bloomword: use the real app-icon PNG everywhere (was the flat SVG)

Swaps /images/products/bloomword.svg for bloomword.png across the apps
index, the products index, the Bloomword product page, the bento grid,
and both services.ts proof lists (games + education), so the icon
matches what actually ships on the App Store and Play listings.

The SVG is now unreferenced; leaving it in place for now.

apps/web/src/app/apps/page.tsx

@@ -22,7 +22,7 @@ const apps = [
   {
     name: "Bloomword",
     tagline: "Grow your vocab: a daily word game with a living 3D tree",
-    icon: "/images/products/bloomword.svg",
+    icon: "/images/products/bloomword.png",
     color: "text-green-600 dark:text-green-400",
     borderColor: "border-green-500/20",
     href: "/products/bloomword",

apps/web/src/app/products/bloomword/page.tsx

@@ -78,7 +78,7 @@ export default function BloomwordPage() {
         </Link>
 
         <div className="flex items-center gap-4 mb-2">
-          <Image src="/images/products/bloomword.svg" alt="Bloomword icon" width={64} height={64} className="rounded-2xl" />
+          <Image src="/images/products/bloomword.png" alt="Bloomword icon" width={64} height={64} className="rounded-2xl" />
           <div>
             <span className="inline-flex items-center rounded-full bg-green-400/15 px-2.5 py-0.5 font-mono text-[10px] uppercase tracking-[0.2em] text-green-600 dark:text-green-400 mb-1">
               Now Live

apps/web/src/app/products/page.tsx

@@ -119,7 +119,7 @@ const products: Product[] = [
     title: "Bloomword",
     description: "A daily word game where everyone gets the same letters and races the sunset; every word you find grows a biome-specific, living 3D typographic tree. Build streaks, collect biomes, and share your bloom. Play free at bloomword.earth, or download free on iOS and Android.",
     color: "green",
-    icon: "/images/products/bloomword.svg",
+    icon: "/images/products/bloomword.png",
     releaseDate: "2026-07-06",
   },
   {