fix: TypeScript errors, shadow deprecations, and build configuration

- Fix shadow style deprecation warnings across components (boxShadow)
- Add type declaration files (codec.d.ts, modules.d.ts)
- Update metro.config.cjs for proper asset extensions
- Update tsconfig.json with module resolution settings
- Fix TypeScript errors in shared/lib files
- Update app icons (optimized PNG files)

mobile/src/components/ChangePasswordModal.tsx

@@ -90,7 +90,7 @@ const ChangePasswordModal: React.FC<ChangePasswordModalProps> = ({
         {
           text: 'Send Reset Link',
           onPress: async () => {
-            const { error } = await resetPassword(user.email);
+            const { error } = await resetPassword(user.email!);
             if (error) {
               Alert.alert('Error', error.message || 'Failed to send reset email');
             } else {