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/redux/fireNotificationReducer.dart

@@ -1,52 +0,0 @@
-import 'package:redux/redux.dart';
-
-import '../models/fireNotification.dart';
-import 'actions.dart';
-
-final Reducer<List<FireNotification>> fireNotificationReducer =
-    combineReducers<List<FireNotification>>(<Reducer<List<FireNotification>>>[
-  TypedReducer<List<FireNotification>, AddedFireNotificationAction>(
-      _addedFireNotification),
-  TypedReducer<List<FireNotification>, DeletedFireNotificationAction>(
-      _deletedFireNotification),
-  TypedReducer<List<FireNotification>, UpdatedFireNotificationAction>(
-      _updatedFireNotification),
-  TypedReducer<List<FireNotification>, DeletedAllFireNotificationAction>(
-      _deletedAllFireNotifications),
-  TypedReducer<List<FireNotification>, ReadedFireNotificationAction>(
-      _readedFireNotification)
-]);
-
-List<FireNotification> _addedFireNotification(
-    List<FireNotification> notifications, AddedFireNotificationAction action) {
-  return List<FireNotification>.from(notifications)..insert(0, action.notif);
-}
-
-List<FireNotification> _deletedFireNotification(
-    List<FireNotification> notifications,
-    DeletedFireNotificationAction action) {
-  return List<FireNotification>.from(notifications)..remove(action.notif);
-}
-
-List<FireNotification> _updatedFireNotification(
-    List<FireNotification> notifications,
-    UpdatedFireNotificationAction action) {
-  return notifications
-      .map((FireNotification notif) =>
-          notif.id == action.notif.id ? action.notif : notif)
-      .toList();
-}
-
-List<FireNotification> _readedFireNotification(
-    List<FireNotification> notifications, ReadedFireNotificationAction action) {
-  return notifications
-      .map((FireNotification yourLocation) =>
-          yourLocation.id == action.notif.id ? action.notif : yourLocation)
-      .toList();
-}
-
-List<FireNotification> _deletedAllFireNotifications(
-    List<FireNotification> notifications,
-    DeletedAllFireNotificationAction action) {
-  return <FireNotification>[];
-}