fix(bootstraper): invalid place to dispatch onCompleted

lib/src/bootstrapper.dart

@@ -55,11 +55,11 @@ class BootstrapState with _$BootstrapState {
 sealed class BootstrapEvent with _$BootstrapEvent {
   const factory BootstrapEvent.start() = StartEvent;
   const factory BootstrapEvent.stageCompleted() = StageCompletedEvent;
-  const factory BootstrapEvent.finished() = FinishedEvent;
 }
 
 class BootstrapController extends Bloc<BootstrapEvent, BootstrapState> {
-  BootstrapController(super.initialState) {
+  final Completer<void> completer;
+  BootstrapController(super.initialState, this.completer) {
     assert(state.stages.isNotEmpty, "Stages list cannot be empty");
 
     on<StartEvent>((event, emit) {
@@ -79,7 +79,7 @@ class BootstrapController extends Bloc<BootstrapEvent, BootstrapState> {
 
       if (newState.isCompleted) {
         talker.info("BootstrapController: All stages completed");
-        add(const BootstrapEvent.finished());
+        completer.complete();
       } else if (await newState.currentStage.isCompleted) {
         talker.info(
           "BootstrapController: Stage ${newState.currentStage.title} already completed, skipping",
@@ -159,7 +159,10 @@ class Bootstrapper extends StatelessWidget {
   Widget build(BuildContext context) {
     return BlocProvider(
       create: (context) {
-        final controller = BootstrapController(BootstrapState(stages));
+        final controller = BootstrapController(
+          BootstrapState(stages),
+          onCompleted,
+        );
         controller.add(const BootstrapEvent.start());
         return controller;
       },
@@ -175,9 +178,10 @@ class Bootstrapper extends StatelessWidget {
           mainAxisSize: MainAxisSize.max,
           children: [
             Flexible(
-              flex: 3,
+              flex: 2,
               child: Center(child: Loader.playing(flavour: LoaderFlavour.big)),
             ),
+            Flexible(flex: 1, child: Container()),
             Flexible(flex: 1, child: BootstrapFooter()),
           ],
         ),