chore: add build artifacts, map assets, and routing data

apps/siro_maps/lib/data/models/hazard_model.dart

@@ -0,0 +1,32 @@
+class HazardModel {
+  final String type; // 'accident', 'closure', 'bump', 'checkpoint', 'camera'
+  final String title;
+  final String description;
+  final double latitude;
+  final double longitude;
+  final double altitude; // Altitude AMSL in meters (defaults to 0.0)
+  final DateTime createdAt;
+
+  HazardModel({
+    required this.type,
+    required this.title,
+    required this.description,
+    required this.latitude,
+    required this.longitude,
+    this.altitude = 0.0,
+    required this.createdAt,
+  });
+
+  Map<String, dynamic> toJson() {
+    return {
+      'type': type,
+      'title': title,
+      'description': description,
+      'latitude': latitude,
+      'longitude': longitude,
+      'altitude': altitude,
+      'elevation_meters': altitude,
+      'timestamp': createdAt.toIso8601String(),
+    };
+  }
+}