[verified] Publish ReelBox source under GPLv3

lib/bootstrap.dart

@@ -0,0 +1,98 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+/// Runs native/local initialization behind a visible, recoverable startup view.
+/// Raw exception strings are never rendered: they can include file paths, remote
+/// service data or removed vendor text.
+class ReelboxBootstrap extends StatefulWidget {
+  const ReelboxBootstrap({
+    super.key,
+    required this.initialize,
+    required this.builder,
+  });
+  final Future<void> Function() initialize;
+  final WidgetBuilder builder;
+  @override
+  State<ReelboxBootstrap> createState() => _ReelboxBootstrapState();
+}
+
+class _ReelboxBootstrapState extends State<ReelboxBootstrap> {
+  bool _ready = false, _failed = false;
+  int _generation = 0;
+
+  @override
+  void initState() {
+    super.initState();
+    unawaited(_start());
+  }
+
+  Future<void> _start() async {
+    final generation = ++_generation;
+    setState(() {
+      _ready = false;
+      _failed = false;
+    });
+    try {
+      await widget.initialize();
+      if (mounted && generation == _generation) setState(() => _ready = true);
+    } catch (_) {
+      if (mounted && generation == _generation) setState(() => _failed = true);
+    }
+  }
+
+  @override
+  void dispose() {
+    _generation++;
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (_ready) return widget.builder(context);
+    return MaterialApp(
+      title: 'Reelbox',
+      debugShowCheckedModeBanner: false,
+      theme: ThemeData(
+        brightness: Brightness.dark,
+        colorSchemeSeed: const Color(0xFFBC3D34),
+      ),
+      home: Scaffold(
+        body: Center(
+          child: Padding(
+            padding: const EdgeInsets.all(32),
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                const Icon(Icons.local_movies_outlined, size: 48),
+                const SizedBox(height: 24),
+                const Text('Reelbox', style: TextStyle(fontSize: 28)),
+                const SizedBox(height: 24),
+                if (!_failed) ...[
+                  const CircularProgressIndicator(),
+                  const SizedBox(height: 24),
+                  const Text('Opening your library'),
+                ] else ...[
+                  const Text(
+                    'Reelbox could not start',
+                    textAlign: TextAlign.center,
+                  ),
+                  const SizedBox(height: 12),
+                  const Text(
+                    'Your library has not been reset. Try starting again.',
+                    textAlign: TextAlign.center,
+                  ),
+                  const SizedBox(height: 24),
+                  FilledButton(
+                    onPressed: () => unawaited(_start()),
+                    child: const Text('Try again'),
+                  ),
+                ],
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}