React Native Navigation (Expo Router) File-Based Routing Fundamentals Expo Router uses file-system based routing. Files in become routes. Route Structure Layout Groups Parentheses create layout groups - they affect layout hierarchy but not URL: Dynamic Routes Catch-All Routes Navigation Patterns Programmatic Navigation Link Component Stack Navigation Dynamic Header Options Modals Deep Linking Configure scheme in app.json Test deep links Universal Links (iOS) 1. Add to app.json 2. Host file at : Handle incoming links Common Patterns Auth-Protected Routes See skill for full auth context pattern…