feat: implement locale-aware routing with [locale] dynamic segments

WARNING: This change breaks existing SEO URLs for Serbian locale.

Changes:
- Migrated from separate locale folders (src/app/en/, src/app/de/, etc.)
  to [locale] dynamic segments (src/app/[locale]/)
- Serbian is now at /sr/ instead of / (root)
- English at /en/, German at /de/, French at /fr/
- All components updated to generate locale-aware links
- Root / now redirects to /sr (307 temporary redirect)

SEO Impact:
- Previously indexed Serbian URLs (/, /products, /about, /contact)
  will now return 404 or redirect to /sr/* URLs
- This is a breaking change for SEO - Serbian pages should ideally
  remain at root (/) with only non-default locales getting prefix
- Consider implementing 301 redirects from old URLs to maintain
  search engine rankings

Technical Notes:
- next-intl v4 with [locale] structure requires ALL locales to
  have the prefix (cannot have default locale at root)
- Alternative approach would be separate folder structure per locale

src/app/[locale]/page.tsx

@@ -0,0 +1,225 @@
+import { getProducts } from "@/lib/saleor";
+import { getTranslations, setRequestLocale } from "next-intl/server";
+import Header from "@/components/layout/Header";
+import Footer from "@/components/layout/Footer";
+import HeroVideo from "@/components/home/HeroVideo";
+import ProductCard from "@/components/product/ProductCard";
+import TrustBadges from "@/components/home/TrustBadges";
+import AsSeenIn from "@/components/home/AsSeenIn";
+import ProductReviews from "@/components/product/ProductReviews";
+import BeforeAfterGallery from "@/components/home/BeforeAfterGallery";
+import ProblemSection from "@/components/home/ProblemSection";
+import HowItWorks from "@/components/home/HowItWorks";
+
+export async function generateMetadata({ params }: { params: Promise<{ locale: string }> }) {
+  const { locale } = await params;
+  setRequestLocale(locale);
+  return {
+    title: locale === "sr" 
+      ? "ManoonOils - Premium prirodna ulja za negu kose i kože"
+      : "ManoonOils - Premium Natural Oils for Hair & Skin",
+    description: locale === "sr"
+      ? "Otkrijte našu premium kolekciju prirodnih ulja za negu kose i kože."
+      : "Discover our premium collection of natural oils for hair and skin care.",
+  };
+}
+
+export default async function Homepage({ params }: { params: Promise<{ locale: string }> }) {
+  const { locale } = await params;
+  setRequestLocale(locale);
+  const t = await getTranslations("Home");
+  const tBenefits = await getTranslations("Benefits");
+  
+  const productLocale = locale === "sr" ? "SR" : "EN";
+  let products: any[] = [];
+  try {
+    products = await getProducts(productLocale);
+  } catch (e) {
+    console.log("Failed to fetch products during build");
+  }
+
+  const featuredProducts = products?.slice(0, 4) || [];
+  const hasProducts = featuredProducts.length > 0;
+
+  const basePath = `/${locale}`;
+ 
+  return (
+    <>
+      <Header locale={locale} />
+
+      <main className="min-h-screen bg-white">
+        <HeroVideo locale={locale} />
+
+        <AsSeenIn />
+
+        <ProductReviews />
+
+        <TrustBadges />
+
+        <ProblemSection />
+
+        <BeforeAfterGallery />
+
+        <div id="main-content" className="scroll-mt-[72px] lg:scroll-mt-[72px]">
+          {hasProducts && (
+            <section className="py-24 px-4 sm:px-6 lg:px-8 bg-white">
+              <div className="max-w-7xl mx-auto">
+                <div className="text-center mb-16">
+                  <span className="text-xs uppercase tracking-[0.2em] text-[#666666] mb-3 block">
+                    {t("collection")}
+                  </span>
+                  <h2 className="text-3xl md:text-4xl font-medium mb-4">
+                    {t("premiumOils")}
+                  </h2>
+                  <p className="text-[#666666] max-w-xl mx-auto">
+                    {t("oilsDescription")}
+                  </p>
+                </div>
+
+                <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-6 lg:gap-8">
+                  {featuredProducts.map((product, index) => (
+                    <ProductCard key={product.id} product={product} index={index} locale={productLocale} />
+                  ))}
+                </div>
+
+                <div className="text-center mt-12">
+                  <a
+                    href={`${basePath}/products`}
+                    className="inline-block text-sm uppercase tracking-[0.1em] border-b border-black pb-1 hover:text-[#666666] hover:border-[#666666] transition-colors"
+                  >
+                    {t("viewAll")}
+                  </a>
+                </div>
+              </div>
+            </section>
+          )}
+
+          <HowItWorks />
+
+          <section className="py-24 px-4 sm:px-6 lg:px-8 bg-[#f8f9fa]">
+            <div className="max-w-7xl mx-auto">
+              <div className="grid grid-cols-1 lg:grid-cols-2 gap-12 lg:gap-20 items-center">
+                <div>
+                  <span className="text-xs uppercase tracking-[0.2em] text-[#666666] mb-3 block">
+                    {t("ourStory")}
+                  </span>
+                  <h2 className="text-3xl md:text-4xl font-medium mb-6">
+                    {t("handmadeWithLove")}
+                  </h2>
+                  <p className="text-[#666666] mb-6 leading-relaxed">
+                    {t("storyText1")}
+                  </p>
+                  <p className="text-[#666666] mb-8 leading-relaxed">
+                    {t("storyText2")}
+                  </p>
+                  <a
+                    href={`${basePath}/about`}
+                    className="inline-block text-sm uppercase tracking-[0.1em] border-b border-black pb-1 hover:text-[#666666] hover:border-[#666666] transition-colors"
+                  >
+                    {t("learnMore")}
+                  </a>
+                </div>
+                <div className="relative aspect-[4/3] bg-[#e8f0f5] rounded-lg overflow-hidden">
+                  <img
+                    src="https://images.unsplash.com/photo-1608571423902-eed4a5ad8108?q=80&w=800&auto=format&fit=crop"
+                    alt={locale === "sr" ? "Proizvodnja prirodnih ulja" : "Natural oils production"}
+                    className="w-full h-full object-cover"
+                  />
+                </div>
+              </div>
+            </div>
+          </section>
+
+          <section className="py-24 px-4 sm:px-6 lg:px-8 bg-gradient-to-b from-white to-[#faf9f7]">
+            <div className="max-w-7xl mx-auto">
+              <div className="text-center mb-16">
+                <span className="text-xs uppercase tracking-[0.3em] text-[#c9a962] mb-4 block font-medium">
+                  {t("whyChooseUs")}
+                </span>
+                <h2 className="text-3xl md:text-4xl lg:text-5xl font-medium text-[#1a1a1a]">
+                  {t("manoonDifference")}
+                </h2>
+                <div className="w-24 h-1 bg-gradient-to-r from-[#c9a962] to-[#FFD700] mx-auto mt-6 rounded-full" />
+              </div>
+
+              <div className="grid grid-cols-1 md:grid-cols-3 gap-6 lg:gap-8">
+                {[
+                  {
+                    title: tBenefits("natural"),
+                    description: tBenefits("naturalDesc"),
+                    icon: (
+                      <svg className="w-10 h-10" viewBox="0 0 24 24" fill="none">
+                        <path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z" fill="#7eb89e"/>
+                        <path stroke="#7eb89e" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" d="M9 12.75L11.25 15 15 9.75M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                      </svg>
+                    ),
+                  },
+                  {
+                    title: tBenefits("handcrafted"),
+                    description: tBenefits("handcraftedDesc"),
+                    icon: (
+                      <svg className="w-10 h-10" viewBox="0 0 24 24" fill="none">
+                        <path stroke="#c9a962" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" d="M15.182 15.182a4.5 4.5 0 01-6.364 0M21 12a9 9 0 11-18 0 9 9 0 0118 0zM9.75 9.75c0 .414-.168.75-.375.75S9 10.164 9 9.75 9.168 9 9.375 9s.375.336.375.75zm-.375 0h.008v.015h-.008V9.75zm5.625 0c0 .414-.168.75-.375.75s-.375-.336-.375-.75.168-.75.375-.75.375.336.375.75zm-.375 0h.008v.015h-.008V9.75z"/>
+                      </svg>
+                    ),
+                  },
+                  {
+                    title: tBenefits("sustainable"),
+                    description: tBenefits("sustainableDesc"),
+                    icon: (
+                      <svg className="w-10 h-10" viewBox="0 0 24 24" fill="none">
+                        <path stroke="#e8967a" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" d="M12.75 3.03v.568c0 .334.148.65.405.864l1.068.89c.442.369.535 1.01.216 1.49l-.51.766a2.25 2.25 0 01-1.161.886l-.143.048a1.107 1.107 0 00-.57 1.664c.369.555.169 1.307-.427 1.605L9 13.125l.423 1.059a.956.956 0 11-1.652.928l-.714-.093a1.125 1.125 0 00-1.906.172L4.5 15.75l-.612.153M12.75 3.031l.002-.004m0 0a8.955 8.955 0 00-4.943.834 8.974 8.974 0 004.943.834m4.943-.834a8.955 8.955 0 00-4.943-.834c2.687 0 5.18.948 7.161 2.664a8.974 8.974 0 014.943-.834z"/>
+                      </svg>
+                    ),
+                  },
+                ].map((benefit, index) => (
+                  <div
+                    key={index}
+                    className="relative text-center p-8 bg-white rounded-3xl shadow-lg border border-[#f0ede8] hover:shadow-2xl hover:border-[#c9a962]/30 transition-all duration-500 group"
+                  >
+                    <div className="w-20 h-20 mx-auto mb-6 rounded-2xl bg-gradient-to-br from-[#faf9f7] to-[#f5f0e8] flex items-center justify-center shadow-md border border-[#e8e4dc] group-hover:border-[#c9a962]/50 transition-colors duration-300">
+                      {benefit.icon}
+                    </div>
+                    <h3 className="text-xl font-semibold text-[#1a1a1a] mb-3">{benefit.title}</h3>
+                    <p className="text-sm text-[#666666] leading-relaxed">{benefit.description}</p>
+                  </div>
+                ))}
+              </div>
+            </div>
+          </section>
+
+          <section className="py-28 lg:py-32 px-4 sm:px-6 lg:px-8 bg-[#1a1a1a] text-white">
+            <div className="max-w-7xl mx-auto">
+              <div className="max-w-2xl mx-auto text-center">
+                <span className="text-xs uppercase tracking-[0.2em] text-white/60 mb-3 block">
+                  {t("stayConnected")}
+                </span>
+                <h2 className="text-3xl md:text-4xl lg:text-5xl font-medium mb-6">
+                  {t("joinCommunity")}
+                </h2>
+                <p className="text-white/70 mb-10 mx-auto text-lg">
+                  {t("newsletterText")}
+                </p>
+                <form className="flex flex-col sm:flex-row items-stretch justify-center max-w-md mx-auto gap-0">
+                  <input
+                    type="email"
+                    placeholder={t("emailPlaceholder")}
+                    className="flex-1 min-w-0 px-5 h-14 bg-white/10 border border-white/20 border-b-0 sm:border-b border-r-0 sm:border-r border-white/20 text-white placeholder:text-white/50 focus:border-white focus:outline-none transition-colors text-base text-center sm:text-left rounded-t sm:rounded-l sm:rounded-tr-none"
+                  />
+                  <button
+                    type="submit"
+                    className="px-8 h-14 bg-white text-black text-sm uppercase tracking-[0.1em] font-medium hover:bg-white/90 transition-colors whitespace-nowrap flex-shrink-0 rounded-b sm:rounded-r sm:rounded-bl-none"
+                  >
+                    {t("subscribe")}
+                  </button>
+                </form>
+              </div>
+            </div>
+          </section>
+        </div>
+      </main>
+
+      <Footer locale={locale} />
+    </>
+  );
+}