concurrency work in prep for speeding things up

refactor splash screen to process initialization in a better way
more async tools for async cubit constructors
greatly improved StateMapFollower class

lib/layout/home/home_account_ready/home_account_ready_shell.dart

@@ -137,17 +137,17 @@ class HomeAccountReadyShellState extends State<HomeAccountReadyShell> {
               create: (context) => ActiveConversationsBlocMapCubit(
                   activeAccountInfo: widget.activeAccountInfo,
                   contactListCubit: context.read<ContactListCubit>())
-                ..followBloc(context.read<ChatListCubit>())),
+                ..follow(context.read<ChatListCubit>())),
           BlocProvider(
               create: (context) => ActiveSingleContactChatBlocMapCubit(
                   activeAccountInfo: widget.activeAccountInfo,
                   contactListCubit: context.read<ContactListCubit>(),
                   chatListCubit: context.read<ChatListCubit>())
-                ..followBloc(context.read<ActiveConversationsBlocMapCubit>())),
+                ..follow(context.read<ActiveConversationsBlocMapCubit>())),
           BlocProvider(
               create: (context) => WaitingInvitationsBlocMapCubit(
                   activeAccountInfo: widget.activeAccountInfo, account: account)
-                ..followBloc(context.read<ContactInvitationListCubit>()))
+                ..follow(context.read<ContactInvitationListCubit>()))
         ],
         child: MultiBlocListener(listeners: [
           BlocListener<WaitingInvitationsBlocMapCubit,

lib/layout/index.dart

@@ -1,67 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:flutter_svg/flutter_svg.dart';
-import 'package:radix_colors/radix_colors.dart';
-
-import '../tools/tools.dart';
-
-class IndexPage extends StatefulWidget {
-  const IndexPage({super.key});
-
-  @override
-  State<IndexPage> createState() => _IndexPageState();
-}
-
-class _IndexPageState extends State<IndexPage> {
-  @override
-  void initState() {
-    super.initState();
-
-    WidgetsBinding.instance.addPostFrameCallback((_) async {
-      await changeWindowSetup(
-          TitleBarStyle.hidden, OrientationCapability.normal);
-    });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final theme = Theme.of(context);
-    final textTheme = theme.textTheme;
-    final monoTextStyle = textTheme.labelSmall!
-        .copyWith(fontFamily: 'Source Code Pro', fontSize: 11);
-    final emojiTextStyle = textTheme.labelSmall!
-        .copyWith(fontFamily: 'Noto Color Emoji', fontSize: 11);
-
-    return Scaffold(
-        body: DecoratedBox(
-      decoration: BoxDecoration(
-          gradient: LinearGradient(
-              begin: Alignment.topCenter,
-              end: Alignment.bottomCenter,
-              colors: <Color>[
-            RadixColors.dark.plum.step4,
-            RadixColors.dark.plum.step2,
-          ])),
-      child: Center(
-          child: ConstrainedBox(
-              constraints: const BoxConstraints(maxHeight: 300),
-              child: Column(
-                  mainAxisAlignment: MainAxisAlignment.center,
-                  children: [
-                    // Hack to preload fonts
-                    Offstage(child: Text('🧱', style: emojiTextStyle)),
-                    // Hack to preload fonts
-                    Offstage(child: Text('A', style: monoTextStyle)),
-                    // Splash Screen
-                    Expanded(
-                        flex: 2,
-                        child: SvgPicture.asset(
-                          'assets/images/icon.svg',
-                        )),
-                    Expanded(
-                        child: SvgPicture.asset(
-                      'assets/images/title.svg',
-                    ))
-                  ]))),
-    ));
-  }
-}

lib/layout/layout.dart

@@ -1,4 +1,4 @@
 export 'default_app_bar.dart';
 export 'home/home.dart';
 export 'home/home_account_ready/main_pager/main_pager.dart';
-export 'index.dart';
+export 'splash.dart';

lib/layout/splash.dart

@@ -0,0 +1,53 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+import 'package:radix_colors/radix_colors.dart';
+
+import '../tools/tools.dart';
+
+class Splash extends StatefulWidget {
+  const Splash({super.key});
+
+  @override
+  State<Splash> createState() => _SplashState();
+}
+
+class _SplashState extends State<Splash> {
+  @override
+  void initState() {
+    super.initState();
+
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      await changeWindowSetup(
+          TitleBarStyle.hidden, OrientationCapability.normal);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) => DecoratedBox(
+        decoration: BoxDecoration(
+            gradient: LinearGradient(
+                begin: Alignment.topCenter,
+                end: Alignment.bottomCenter,
+                colors: <Color>[
+              RadixColors.dark.plum.step4,
+              RadixColors.dark.plum.step2,
+            ])),
+        child: Center(
+            child: ConstrainedBox(
+                constraints: const BoxConstraints(maxHeight: 300),
+                child: Column(
+                    mainAxisAlignment: MainAxisAlignment.center,
+                    children: [
+                      // Splash Screen
+                      Expanded(
+                          flex: 2,
+                          child: SvgPicture.asset(
+                            'assets/images/icon.svg',
+                          )),
+                      Expanded(
+                          child: SvgPicture.asset(
+                        'assets/images/title.svg',
+                      ))
+                    ]))),
+      );
+}