Fix all shadow deprecation warnings across entire mobile app

- Replaced shadowColor/shadowOffset/shadowOpacity/shadowRadius with boxShadow
- Fixed 28 files (21 screens + 7 components)
- Preserved elevation for Android compatibility
- All React Native Web deprecation warnings resolved

Files fixed:
- All screen components
- All reusable components
- Navigation components
- Modal components

mobile/metro.config.cjs

@@ -0,0 +1,48 @@
+// Learn more https://docs.expo.io/guides/customizing-metro
+const { getDefaultConfig } = require('expo/metro-config');
+const path = require('path');
+
+/** @type {import('expo/metro-config').MetroConfig} */
+const config = getDefaultConfig(__dirname);
+
+// ============================================
+// WORKSPACE CONFIGURATION
+// ============================================
+
+const projectRoot = __dirname;
+
+// Use default watchFolders (no custom configuration)
+
+// ============================================
+// CUSTOM MODULE RESOLUTION
+// ============================================
+// DISABLED: Custom resolver causes empty-module.js resolution issues
+// Using npm packages directly instead
+
+// ============================================
+// FILE EXTENSIONS
+// ============================================
+
+config.resolver.sourceExts = [
+  'expo.ts',
+  'expo.tsx',
+  'expo.js',
+  'expo.jsx',
+  'ts',
+  'tsx',
+  'js',
+  'jsx',
+  'json',
+  'wasm',
+  'svg',
+  'cjs',
+  'mjs',
+];
+
+// ============================================
+// NODE POLYFILLS
+// ============================================
+
+// Polyfills will be resolved from project's own node_modules
+
+module.exports = config;