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/customMoment.dart

@@ -1,76 +0,0 @@
-// Copyright (c) 2016, rinukkusu. All rights reserved. Use of this source code
-// is governed by a BSD-style license that can be found in the LICENSE file.
-
-import 'package:flutter/material.dart';
-
-import 'generated/i18n.dart';
-
-class Moment {
-
-  Moment.now() {
-    _date = DateTime.now();
-  }
-
-  Moment.fromDate(DateTime date) {
-    _date = date;
-  }
-
-  Moment.fromMillisecondsSinceEpoch(int millisecondsSinceEpoch,
-      {bool isUtc = false}) {
-    _date = DateTime.fromMillisecondsSinceEpoch(millisecondsSinceEpoch,
-        isUtc: isUtc);
-  }
-  late DateTime _date;
-
-  static Moment parse(String date) {
-    return Moment.fromDate(DateTime.parse(date));
-  }
-
-  @override
-  String toString() {
-    return _date.toString();
-  }
-
-  String fromNow(BuildContext context, [bool withoutPrefixOrSuffix = false]) {
-    return from(context, DateTime.now(), withoutPrefixOrSuffix);
-  }
-
-  String from(BuildContext context, DateTime date,
-      [bool withoutPrefixOrSuffix = false]) {
-    final Duration diff = date.difference(_date);
-
-    String timeString = '';
-
-    if (diff.inSeconds.abs() < 45)
-      timeString = S.of(context).aF3wSeconds;
-    else if (diff.inMinutes.abs() < 2)
-      timeString = S.of(context).aMinute;
-    else if (diff.inMinutes.abs() < 45)
-      timeString = S.of(context).inMinutes(diff.inMinutes.abs().toString());
-    else if (diff.inHours.abs() < 2)
-      timeString = S.of(context).anHour;
-    else if (diff.inHours.abs() < 22)
-      timeString = S.of(context).inHours(diff.inHours.abs().toString());
-    else if (diff.inDays.abs() < 2)
-      timeString = S.of(context).aDay;
-    else if (diff.inDays.abs() < 26)
-      timeString = S.of(context).inDays(diff.inDays.abs().toString());
-    else if (diff.inDays.abs() < 60)
-      timeString = S.of(context).aMonth;
-    else if (diff.inDays.abs() < 320)
-      timeString = S.of(context).inMonths((diff.inDays.abs() ~/ 30).toString());
-    else if (diff.inDays.abs() < 547)
-      timeString = S.of(context).aYear;
-    else
-      timeString = S.of(context).inYears((diff.inDays.abs() ~/ 356).toString());
-
-    if (!withoutPrefixOrSuffix) {
-      if (diff.isNegative)
-        timeString = S.of(context).somethingAgo(timeString);
-      else
-        timeString = S.of(context).inSomething(timeString);
-    }
-
-    return timeString;
-  }
-}