fixes, improvements, and cleanup. notably, custom camera profiles make a comeback.

lib/models/camera_profile.dart

@@ -1,33 +1,64 @@
+import 'package:uuid/uuid.dart';
+
 /// A bundle of preset OSM tags that describe a particular camera model/type.
 class CameraProfile {
+  final String id;
   final String name;
   final Map<String, String> tags;
+  final bool builtin;
 
-  const CameraProfile({
+  CameraProfile({
+    required this.id,
     required this.name,
     required this.tags,
+    this.builtin = false,
   });
 
-  // Built‑in ALPR profile (Flock Falcon‑style).
-  factory CameraProfile.alpr() => const CameraProfile(
-        name: 'ALPR Camera',
-        tags: {
+  /// Built‑in default: Generic Flock ALPR camera
+  factory CameraProfile.alpr() => CameraProfile(
+        id: 'builtin-alpr',
+        name: 'Generic Flock',
+        tags: const {
           'man_made': 'surveillance',
           'surveillance:type': 'ALPR',
-          'surveillance': 'public',
-          'surveillance:zone': 'traffic',
           'camera:type': 'fixed',
-          'camera:mount': 'pole',
+          'manufacturer': 'Flock Safety',
+          'manufacturer:wikidata': 'Q108485435',
         },
+        builtin: true,
       );
 
   CameraProfile copyWith({
+    String? id,
     String? name,
     Map<String, String>? tags,
+    bool? builtin,
   }) =>
       CameraProfile(
+        id: id ?? this.id,
         name: name ?? this.name,
         tags: tags ?? this.tags,
+        builtin: builtin ?? this.builtin,
       );
+
+  Map<String, dynamic> toJson() =>
+      {'id': id, 'name': name, 'tags': tags, 'builtin': builtin};
+
+  factory CameraProfile.fromJson(Map<String, dynamic> j) => CameraProfile(
+        id: j['id'],
+        name: j['name'],
+        tags: Map<String, String>.from(j['tags']),
+        builtin: j['builtin'] ?? false,
+      );
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is CameraProfile &&
+          runtimeType == other.runtimeType &&
+          id == other.id;
+
+  @override
+  int get hashCode => id.hashCode;
 }