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

settings.gradle.kts

@@ -0,0 +1,34 @@
+pluginManagement {
+    repositories {
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+        maven {
+            url = uri("https://api.mapbox.com/downloads/v2/releases/maven")
+            credentials.username = "mapbox"
+            credentials.password = providers.gradleProperty("MAPBOX_DOWNLOADS_TOKEN")
+                .orElse(providers.environmentVariable("MAPBOX_DOWNLOADS_TOKEN"))
+                .getOrElse("")
+            authentication {
+                create<BasicAuthentication>("basic")
+            }
+        }
+    }
+}
+
+rootProject.name = "GeoZoner"
+include(":app")