feat: initial project structure with Settings screen

- Set up Kotlin + Jetpack Compose Android project
- Configure Gradle with version catalog and all dependencies
- Implement Settings screen for TeslamateApi server configuration
- Add Material Design 3 theming with Tesla-inspired colors
- Set up Hilt dependency injection
- Add DataStore for settings persistence
- Include navigation component with Compose integration
- Add GPLv3 license

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/src/main/java/com/matedroid/ui/navigation/NavGraph.kt

@@ -0,0 +1,44 @@
+package com.matedroid.ui.navigation
+
+import androidx.compose.runtime.Composable
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.rememberNavController
+import com.matedroid.ui.screens.settings.SettingsScreen
+
+sealed class Screen(val route: String) {
+    data object Settings : Screen("settings")
+    data object Dashboard : Screen("dashboard")
+    data object Charges : Screen("charges")
+    data object ChargeDetail : Screen("charges/{chargeId}") {
+        fun createRoute(chargeId: Int) = "charges/$chargeId"
+    }
+    data object Drives : Screen("drives")
+    data object DriveDetail : Screen("drives/{driveId}") {
+        fun createRoute(driveId: Int) = "drives/$driveId"
+    }
+    data object Battery : Screen("battery")
+    data object Updates : Screen("updates")
+}
+
+@Composable
+fun NavGraph() {
+    val navController = rememberNavController()
+
+    NavHost(
+        navController = navController,
+        startDestination = Screen.Settings.route
+    ) {
+        composable(Screen.Settings.route) {
+            SettingsScreen(
+                onNavigateToDashboard = {
+                    navController.navigate(Screen.Dashboard.route) {
+                        popUpTo(Screen.Settings.route) { inclusive = true }
+                    }
+                }
+            )
+        }
+
+        // Dashboard and other screens will be added in subsequent phases
+    }
+}