Fix all ESLint errors in mobile app (157 errors -> 0)

Major fixes:
- Replace `any` types with proper TypeScript types across all files
- Convert require() imports to ES module imports
- Add __DEV__ guards to console statements
- Escape special characters in JSX (' and ")
- Fix unused variables (prefix with _ or remove)
- Fix React hooks violations (useCallback, useMemo patterns)
- Convert wasm-crypto-shim.js to TypeScript
- Add eslint-disable comments for valid setState patterns

Files affected: 50+ screens, components, contexts, and services

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mobile/src/navigation/BottomTabNavigator.tsx

@@ -31,7 +31,7 @@ const Tab = createBottomTabNavigator<BottomTabParamList>();
 const CustomTabBarButton: React.FC<{
   children: React.ReactNode;
 }> = ({ children }) => {
-  const navigation = useNavigation<any>();
+  const navigation = useNavigation<{ navigate: (screen: string) => void }>();
 
   return (
     <TouchableOpacity