refactor(ui): use local image paths instead of external URLs

Replaced all external image URLs with local image paths in Hero and PhotoGallery components to improve loading performance and reliability.

Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>

Author: Roystbeef

components/Hero.tsx

@@ -19,7 +19,7 @@ export function Hero() {
         >
           <div className="relative inline-block">
             <ImageWithFallback
-              src="https://rarepupper.com/images/profile.png"
+              src="/images/profile.png"
               alt="Tortie the chihuahua-rat terrier mix"
               className="object-cover mx-auto border-8 border-white rounded-full shadow-2xl w-80 h-80"
             />

components/PhotoGallery.tsx

@@ -4,32 +4,32 @@ import { ImageWithFallback } from './figma/ImageWithFallback';
 
 const photos = [
   {
-    src: 'https://rarepupper.com/images/head-back.png',
+    src: '/images/head-back.png',
     caption: 'Professional head-tilting pose',
     hearts: 347,
   },
   {
-    src: 'https://rarepupper.com/images/sleepy.png',
+    src: '/images/sleepy.png',
     caption: 'Tongue-out sleeping beauty',
     hearts: 892,
   },
   {
-    src: 'https://rarepupper.com/images/pawing.png',
+    src: '/images/pawing.png',
     caption: 'String cheese appreciation moment',
     hearts: 1205,
   },
   {
-    src: 'https://rarepupper.com/images/laundry.png',
+    src: '/images/laundry.png',
     caption: 'Blanket burrow headquarters',
     hearts: 654,
   },
   {
-    src: 'https://rarepupper.com/images/tortugas.png',
+    src: '/images/tortugas.png',
     caption: 'Tortuga and the tortugas',
     hearts: 428,
   },
   {
-    src: 'https://rarepupper.com/images/leafs.png',
+    src: '/images/leafs.png',
     caption: 'Leaf hunting expedition',
     hearts: 733,
   },