feat: Cloudinary image migration & preloader removal

- Migrated 25 images to Cloudinary CDN with auto format/quality optimization
- Removed preloader from all pages
- Added .gitignore for env, node_modules, and large image files

images/icon-phone-accent.svg

@@ -0,0 +1,10 @@
+<svg width="24" height="25" viewBox="0 0 24 25" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_198_789)">
+<path d="M23.347 18.4036L19.9977 15.0543C18.8015 13.8582 16.768 14.3367 16.2896 15.8917C15.9307 16.9683 14.7346 17.5663 13.658 17.3271C11.2657 16.729 8.03602 13.6189 7.43794 11.107C7.07908 10.0304 7.79679 8.83422 8.87334 8.47542C10.4284 7.99695 10.9068 5.96347 9.71066 4.7673L6.36138 1.41803C5.40445 0.58071 3.96905 0.58071 3.13173 1.41803L0.859009 3.69075C-1.41371 6.08308 1.09824 12.4228 6.72023 18.0448C12.3422 23.6668 18.6819 26.2984 21.0743 23.906L23.347 21.6333C24.1843 20.6763 24.1843 19.2409 23.347 18.4036Z" fill="#FFB120"/>
+</g>
+<defs>
+<clipPath id="clip0_198_789">
+<rect width="24" height="24" fill="white" transform="translate(0 0.790039)"/>
+</clipPath>
+</defs>
+</svg>