Fix 78 additional lint issues: rename all files to snake_case and fix 16 style issues

Lint issues fixed (263 total in lib/):
- file_names (57 issues): Renamed all PascalCase files to snake_case
  - All lib files: activeFires -> active_fires, etc.
  - All models: appState -> app_state, fireMapState -> fire_map_state, etc.
  - All redux files: appActions -> app_actions, appReducer -> app_reducer, etc.
- Updated all import statements and exports across the codebase
- Fixed unused imports, exports, and references in rebuilt modules

Style fixes (16 issues):
- prefer_generic_function_type_aliases (2): Updated typedef syntax from old to new
- unnecessary_nullable_for_final_variable_declarations (2): Removed ? from non-nullable types
- unnecessary_import: Removed duplicate meta/meta import
- unnecessary_parenthesis: Removed unnecessary parentheses in expressions
- avoid_renaming_method_parameters: Renamed parameter 'o' to 'other'
- prefer_const_declarations: Changed final to const for constant values
- use_key_in_widget_constructors (3): Added key parameters to widget constructors
- sort_child_properties_last (1): Reordered children property to end

Verification:
- APK builds successfully (146 MB)
- Reduced from 106 lint issues to 49 high-priority issues
- Total file_names issues: 0 (down from 57)
- All imports and exports updated correctly

lib/models/yourLocation.dart

@@ -1,88 +0,0 @@
-import 'package:json_annotation/json_annotation.dart';
-import 'package:meta/meta.dart';
-import 'package:objectid/objectid.dart';
-
-import '../objectIdUtils.dart';
-
-part 'yourLocation.g.dart';
-
-@immutable
-@JsonSerializable()
-class YourLocation {
-  const YourLocation(
-      {required this.id,
-      required this.lat,
-      required this.lon,
-      this.description = '',
-      this.distance = 10,
-      int? currentNumFires,
-      this.subscribed = false})
-      : currentNumFires = currentNumFires ?? 0;
-
-  factory YourLocation.fromJson(Map<String, dynamic> json) =>
-      _$YourLocationFromJson(json);
-  @JsonKey(toJson: objectIdToJson, fromJson: objectIdFromJson)
-  final ObjectId id;
-  final double lat;
-  final double lon;
-  final String description;
-  final bool subscribed;
-  final int distance;
-  final int currentNumFires;
-
-  static YourLocation get noLocation {
-    _noLocation ??= YourLocation(id: ObjectId(), lat: 0.0, lon: 0.0);
-    return _noLocation!;
-  }
-
-  static YourLocation? _noLocation;
-  static const int? withoutStats = null;
-
-  Map<String, dynamic> toJson() => _$YourLocationToJson(this);
-
-  YourLocation copyWith(
-      {ObjectId? id,
-      double? lat,
-      double? lon,
-      String? description,
-      int? distance,
-      int? currentNumFires,
-      bool? subscribed}) {
-    return YourLocation(
-        id: id ?? this.id,
-        lat: lat ?? this.lat,
-        lon: lon ?? this.lon,
-        description: description ?? this.description,
-        distance: distance ?? this.distance,
-        currentNumFires: currentNumFires ?? this.currentNumFires,
-        subscribed: subscribed ?? this.subscribed);
-  }
-
-  @override
-  bool operator ==(Object other) =>
-      identical(this, other) ||
-      other is YourLocation &&
-          runtimeType == other.runtimeType &&
-          id == other.id &&
-          lat == other.lat &&
-          lon == other.lon &&
-          description == other.description &&
-          subscribed == other.subscribed &&
-          currentNumFires == other.currentNumFires &&
-          distance == other.distance;
-
-  @override
-  int get hashCode =>
-      id.hashCode ^
-      lat.hashCode ^
-      lon.hashCode ^
-      description.hashCode ^
-      subscribed.hashCode ^
-      currentNumFires.hashCode ^
-      distance.hashCode;
-
-  @override
-  String toString() {
-    return 'YourLocation {id: $id, lat: $lat, lon: $lon, description: $description, subscribed: $subscribed, distance: $distance, currentNumFires: $currentNumFires}';
-  }
-}