fix: add Spanish and Italian to generateStaticParams

Updated the locale layout to include Spanish (es) and Italian (it):
- Added es and it to generateStaticParams for static generation
- Added es and it to locales validation array
- Added es and it to metadata alternates for SEO

This fixes 404 errors when accessing /es/* and /it/* routes.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/[locale]/layout.tsx

@@ -28,6 +28,8 @@ export async function generateMetadata({ params }: { params: Promise<{ locale: s
       languages: {
         'ro': 'https://biblical-guide.com/ro/',
         'en': 'https://biblical-guide.com/en/',
+        'es': 'https://biblical-guide.com/es/',
+        'it': 'https://biblical-guide.com/it/',
         'x-default': 'https://biblical-guide.com/'
       }
     },
@@ -78,7 +80,9 @@ export async function generateMetadata({ params }: { params: Promise<{ locale: s
 export async function generateStaticParams() {
   return [
     { locale: 'ro' },
-    { locale: 'en' }
+    { locale: 'en' },
+    { locale: 'es' },
+    { locale: 'it' }
   ]
 }
 
@@ -87,7 +91,7 @@ interface LocaleLayoutProps {
   params: Promise<{ locale: string }>
 }
 
-const locales = ['ro', 'en']
+const locales = ['ro', 'en', 'es', 'it']
 
 export default async function LocaleLayout({
   children,