Initial commit: GeoZoner Android app scaffolding

- Full Android project with Gradle wrapper
- Hilt DI, Room DB, Retrofit networking
- Auth flow with JWT token management
- Bottom navigation with 4 tabs
- Material 3 theme (light/dark)
- Stub screens ready for implementation
- Ready for Mapbox integration

.gitignore

@@ -0,0 +1,59 @@
+# Built application files
+*.apk
+*.ap_
+*.aab
+
+# Files for the ART/Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+out/
+
+# Gradle files
+.gradle/
+build/
+gradle-app.setting
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Log Files
+*.log
+
+# Android Studio Navigation editor temp files
+.navigation/
+
+# Android Studio captures folder
+captures/
+
+# IntelliJ
+*.iml
+.idea/
+
+# Keystore files
+*.jks
+*.keystore
+
+# Google Services (API keys)
+google-services.json
+
+# External native build folder generated in Android Studio 2.2 and later
+.externalNativeBuild
+.cxx/
+
+# Secrets
+secrets.properties
+MAPBOX_PUBLIC_TOKEN
+MAPBOX_DOWNLOADS_TOKEN
+
+# OS specific files
+.DS_Store
+Thumbs.db
+
+# Uncomment this if your app uses Mapbox
+# app/src/main/res/values/mapbox_access_token.xml