feat: SAPIENS Mobile App - Initial commit

React Native mobile application for SAPIENS news platform.
Consolidated all previous history into single commit.

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

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

client/src/hooks/useLanguage.ts

@@ -0,0 +1,11 @@
+import { useLanguage as useLanguageContext } from '@/contexts/LanguageContext';
+
+export function useLanguage() {
+  const { language: selectedLanguage, setLanguage } = useLanguageContext();
+
+  const onLanguageChange = (lang: string) => {
+    setLanguage(lang as any);
+  };
+
+  return { selectedLanguage, onLanguageChange };
+}