feat: migrate from NativeWind to react-native-unistyles and add Speechmatics audio

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

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

packages/app/metro.config.js

@@ -1,6 +1,5 @@
 const { getDefaultConfig } = require("expo/metro-config");
-const { withNativewind } = require("nativewind/metro");
 
 const config = getDefaultConfig(__dirname);
 
-module.exports = withNativewind(config);
+module.exports = config;