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/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',
+                      ))
+                    ]))),
+      );
+}