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>

sapiense-ai-app/lib/queryClient.ts

@@ -0,0 +1,16 @@
+import { QueryClient } from '@tanstack/react-query';
+
+export const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      refetchOnWindowFocus: false,
+      refetchOnMount: false,
+      refetchOnReconnect: true,
+      retry: 1,
+      staleTime: 5 * 60 * 1000, // 5 minutes
+    },
+    mutations: {
+      retry: false,
+    },
+  },
+});