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/customBottomAppBar.dart

@@ -1,50 +0,0 @@
-import 'package:flutter/material.dart';
-
-class CustomBottomAppBar extends StatelessWidget {
-  const CustomBottomAppBar(
-      {super.key, this.fabLocation,
-      this.showNotch = false,
-      this.height = 56.0,
-      this.color = Colors.black45,
-      this.mainAxisAlignment = MainAxisAlignment.center,
-      this.actions = const <Widget>[]});
-
-  final Color color;
-  final double height;
-  final MainAxisAlignment mainAxisAlignment;
-  final FloatingActionButtonLocation? fabLocation;
-  final bool showNotch;
-  final List<Widget> actions;
-
-  static final List<FloatingActionButtonLocation> kCenterLocations =
-      <FloatingActionButtonLocation>[
-    FloatingActionButtonLocation.centerDocked,
-    FloatingActionButtonLocation.centerFloat,
-  ];
-
-  @override
-  Widget build(BuildContext context) {
-    final List<Widget> rowContents = <Widget>[SizedBox(height: height)];
-
-    if (kCenterLocations.contains(fabLocation)) {
-      /* rowContents.add(
-        const Expanded(child: const SizedBox()),
-      ); */
-    }
-
-    rowContents.addAll(actions);
-
-    return showNotch
-        ? BottomAppBar(
-            color: color,
-            shape: const CircularNotchedRectangle(),
-            child: Row(
-                mainAxisAlignment: mainAxisAlignment, children: rowContents),
-          )
-        : BottomAppBar(
-            color: color,
-            child: Row(
-                mainAxisAlignment: mainAxisAlignment, children: rowContents),
-          );
-  }
-}