PACKET v1.0.0 - Initial release

App móvil Flutter para capturar contenido multimedia, etiquetarlo con hashes y enviarlo a backends configurables.

Features:
- Captura de fotos, audio, video y archivos
- Sistema de etiquetas con bibliotecas externas (HST)
- Packs de etiquetas predefinidos
- Cola de reintentos (hasta 20 contenedores)
- Soporte GPS
- Hash SHA-256 auto-generado por contenedor
- Persistencia SQLite local
- Múltiples destinos configurables

Stack: Flutter 3.38.5, flutter_bloc, sqflite, dio

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

lib/core/utils/hash_utils.dart

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+import 'dart:convert';
+import 'dart:math';
+import 'dart:typed_data';
+import 'package:crypto/crypto.dart';
+
+class HashUtils {
+  static final _random = Random.secure();
+
+  static String generateHash() {
+    final bytes = List<int>.generate(32, (_) => _random.nextInt(256));
+    return sha256.convert(bytes).toString();
+  }
+
+  static String hashFromBytes(Uint8List bytes) {
+    return sha256.convert(bytes).toString();
+  }
+
+  static String hashFromString(String input) {
+    return sha256.convert(utf8.encode(input)).toString();
+  }
+
+  static bool isValidHash(String hash) {
+    if (hash.length != 64) return false;
+    return RegExp(r'^[a-f0-9]{64}$').hasMatch(hash);
+  }
+
+  static List<String> extractHashes(String text) {
+    final regex = RegExp(r'[a-f0-9]{64}');
+    return regex.allMatches(text).map((m) => m.group(0)!).toList();
+  }
+
+  static String truncateHash(String hash, {int length = 8}) {
+    if (hash.length <= length) return hash;
+    return '${hash.substring(0, length)}...';
+  }
+}

lib/core/utils/retry_utils.dart

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+import '../constants/app_constants.dart';
+
+class RetryUtils {
+  static DateTime calculateNextRetry(int intentoActual) {
+    final delay = RetryDelays.getDelay(intentoActual);
+    return DateTime.now().add(delay);
+  }
+
+  static bool shouldRetry(int intentos) {
+    return intentos < AppConstants.maxReintentos;
+  }
+
+  static String formatTimeRemaining(DateTime nextRetry) {
+    final diff = nextRetry.difference(DateTime.now());
+    if (diff.isNegative) return 'Ahora';
+    if (diff.inHours > 0) return '${diff.inHours}h ${diff.inMinutes % 60}m';
+    if (diff.inMinutes > 0) return '${diff.inMinutes}m';
+    return '${diff.inSeconds}s';
+  }
+}