Sync engage-native docs with initial repo commit

[mintlify]

Summary

Syncs documentation for d-sports-engage-native after the initial repository commit (d-sports-ecosystem/d-sports-engage-native@c755106).

Trigger repo files changed

• 401 files added (initial commit of entire engage-native codebase)

Docs pages updated

repositories/d-sports-engage-native.mdx

• Added version number (1.17.3) and web/PWA support note
• Added OneSignal and Sentry to tech stack table
• Expanded features list with locker room games, profile achievements, and settings detail
• Added environment variables table with all EXPO_PUBLIC_* keys
• Added available scripts table
• Added EAS build profiles table
• Added project structure tree
• Updated backend integration section with crypto checkout endpoints
• Added platform-specific tab bar section
• Removed outdated "what changed since last docs sync" section

repositories/d-sports-engage-native/architecture.mdx

• Added screen pattern documentation (JSX-only screens with hook extraction)
• Added state management table (Zustand, Context, local state)
• Added checkout and payments section (RevenueCat + Thirdweb crypto)
• Added platform-specific tab bar details (iOS NativeTabs vs Android/web PillTabBar)
• Added push notifications (OneSignal) and error monitoring (Sentry) sections
• Added path alias documentation