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/markdownPage.dart

@@ -1,55 +0,0 @@
-import 'dart:async';
-
-import 'package:flutter/material.dart';
-import 'package:flutter/services.dart' show rootBundle;
-import 'package:flutter_markdown/flutter_markdown.dart';
-
-import 'globals.dart' as globals;
-import 'mainDrawer.dart';
-
-abstract class MarkdownPage extends StatefulWidget {
-  const MarkdownPage(
-      {super.key,
-      required this.title,
-      required this.route,
-      required this.file});
-  final String title;
-  final Future<String> file;
-  final String route;
-
-  @override
-  _MarkdownPageState createState() => _MarkdownPageState();
-}
-
-class _MarkdownPageState extends State<MarkdownPage> {
-  _MarkdownPageState();
-  late final String title;
-  late final String route;
-  late final Future<String> file;
-  String pageData = '';
-
-  @override
-  void initState() {
-    super.initState();
-    title = widget.title;
-    route = widget.route;
-    file = widget.file;
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    file.then((String fileSync) {
-      rootBundle
-          .loadString(fileSync, cache: !globals.isDevelopment)
-          .then((String pageData) {
-        setState(() {
-          this.pageData = pageData;
-        });
-      });
-    });
-    return Scaffold(
-        appBar: AppBar(title: Text(title)),
-        drawer: MainDrawer(context, route),
-        body: Markdown(data: pageData));
-  }
-}