feat: bugfixes, finished go_router migration, implemented better visibility of states

lib/features/login/view/login_to_existing_account_page.dart

@@ -0,0 +1,66 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:hive_flutter/adapters.dart';
+import 'package:paperless_mobile/core/config/hive/hive_extensions.dart';
+import 'package:paperless_mobile/features/login/cubit/authentication_cubit.dart';
+import 'package:paperless_mobile/features/users/view/widgets/user_account_list_tile.dart';
+import 'package:paperless_mobile/generated/l10n/app_localizations.dart';
+import 'package:paperless_mobile/routes/typed/top_level/login_route.dart';
+
+class LoginToExistingAccountPage extends StatelessWidget {
+  const LoginToExistingAccountPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return ValueListenableBuilder(
+      valueListenable: Hive.localUserAccountBox.listenable(),
+      builder: (context, value, _) {
+        final localAccounts = value.values;
+        return Scaffold(
+          appBar: AppBar(
+            automaticallyImplyLeading: false,
+            title: Text(S.of(context)!.logInToExistingAccount),
+          ),
+          bottomNavigationBar: BottomAppBar(
+            child: Row(
+              mainAxisAlignment: MainAxisAlignment.end,
+              children: [
+                TextButton(
+                  child: Text(S.of(context)!.addAnotherAccount),
+                  onPressed: () {
+                    const LoginRoute().go(context);
+                  },
+                ),
+              ],
+            ),
+          ),
+          body: ListView.builder(
+            itemBuilder: (context, index) {
+              final account = localAccounts.elementAt(index);
+              return Card(
+                child: UserAccountListTile(
+                  account: account,
+                  onTap: () {
+                    context
+                        .read<AuthenticationCubit>()
+                        .switchAccount(account.id);
+                  },
+                  trailing: IconButton(
+                    tooltip: S.of(context)!.remove,
+                    icon: Icon(Icons.close),
+                    onPressed: () {
+                      context
+                          .read<AuthenticationCubit>()
+                          .removeAccount(account.id);
+                    },
+                  ),
+                ),
+              );
+            },
+            itemCount: localAccounts.length,
+          ),
+        );
+      },
+    );
+  }
+}