fix(eq): seed device ID at startup and add device management UI

Fix multi-device EQ auto-switching by calling obtenerDispositivoActual()
during cargarPersistido() to seed the initial device ID. Add device
management modal with rename support, EQ preset editing, and connection
status indicator. Translate device UI keys to all 13 locales.

lib/l10n/app_ar.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "يبدأ خلال {minutes} دقيقة",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "تعديل الجهاز",
+  "eqDeviceNameLabel": "اسم الجهاز",
+  "eqDeviceNameHint": "مثال: مكبر صوت غرفة المعيشة",
+  "eqDeviceNameConfirm": "حفظ",
+  "eqDeviceConnected": "متصل"
+}

lib/l10n/app_bn.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "{minutes} মিনিটে শুরু হবে",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "ডিভাইস সম্পাদনা করুন",
+  "eqDeviceNameLabel": "ডিভাইসের নাম",
+  "eqDeviceNameHint": "যেমন: লিভিং রুমের স্পিকার",
+  "eqDeviceNameConfirm": "সংরক্ষণ করুন",
+  "eqDeviceConnected": "সংযুক্ত"
+}

lib/l10n/app_de.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "Startet in {minutes} Min.",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "Gerät bearbeiten",
+  "eqDeviceNameLabel": "Gerätename",
+  "eqDeviceNameHint": "z. B. Wohnzimmer-Lautsprecher",
+  "eqDeviceNameConfirm": "Speichern",
+  "eqDeviceConnected": "Verbunden"
+}

lib/l10n/app_en.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
+  },
+  "preNoticeCountdown": "Starts in {minutes} min",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "Edit device",
+  "eqDeviceNameLabel": "Device name",
+  "eqDeviceNameHint": "e.g. Living Room Speaker",
+  "eqDeviceNameConfirm": "Save",
+  "eqDeviceConnected": "Connected"
 }

lib/l10n/app_es.arb

@@ -590,5 +590,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
+  },
+  "preNoticeCountdown": "Empieza en {minutes} min",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "Editar dispositivo",
+  "eqDeviceNameLabel": "Nombre del dispositivo",
+  "eqDeviceNameHint": "Ej: Altavoz del living",
+  "eqDeviceNameConfirm": "Guardar",
+  "eqDeviceConnected": "Conectado"
 }

lib/l10n/app_fr.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "Démarre dans {minutes} min",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "Modifier l'appareil",
+  "eqDeviceNameLabel": "Nom de l'appareil",
+  "eqDeviceNameHint": "ex. : Enceinte salon",
+  "eqDeviceNameConfirm": "Enregistrer",
+  "eqDeviceConnected": "Connecté"
+}

lib/l10n/app_hi.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "{minutes} मिनट में शुरू होगा",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "डिवाइस संपादित करें",
+  "eqDeviceNameLabel": "डिवाइस का नाम",
+  "eqDeviceNameHint": "उदा. लिविंग रूम स्पीकर",
+  "eqDeviceNameConfirm": "सहेजें",
+  "eqDeviceConnected": "कनेक्टेड"
+}

lib/l10n/app_id.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "Mulai dalam {minutes} menit",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "Edit perangkat",
+  "eqDeviceNameLabel": "Nama perangkat",
+  "eqDeviceNameHint": "Mis: Speaker ruang tamu",
+  "eqDeviceNameConfirm": "Simpan",
+  "eqDeviceConnected": "Terhubung"
+}

lib/l10n/app_it.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "Inizia tra {minutes} min",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "Modifica dispositivo",
+  "eqDeviceNameLabel": "Nome del dispositivo",
+  "eqDeviceNameHint": "Es: Cassa del salotto",
+  "eqDeviceNameConfirm": "Salva",
+  "eqDeviceConnected": "Connesso"
+}

lib/l10n/app_ja.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "{minutes}分後に開始",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "デバイスを編集",
+  "eqDeviceNameLabel": "デバイス名",
+  "eqDeviceNameHint": "例：リビングのスピーカー",
+  "eqDeviceNameConfirm": "保存",
+  "eqDeviceConnected": "接続中"
+}

lib/l10n/app_pt.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "Começa em {minutes} min",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "Editar dispositivo",
+  "eqDeviceNameLabel": "Nome do dispositivo",
+  "eqDeviceNameHint": "Ex: Caixa da sala",
+  "eqDeviceNameConfirm": "Salvar",
+  "eqDeviceConnected": "Conectado"
+}

lib/l10n/app_ru.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "Начнётся через {minutes} мин",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "Изменить устройство",
+  "eqDeviceNameLabel": "Название устройства",
+  "eqDeviceNameHint": "Напр.: Колонка в гостиной",
+  "eqDeviceNameConfirm": "Сохранить",
+  "eqDeviceConnected": "Подключено"
+}

lib/l10n/app_zh.arb

@@ -627,5 +627,18 @@
     "placeholders": {
       "presetName": {}
     }
-  }
-}
+  },
+  "preNoticeCountdown": "{minutes}分钟后开始",
+  "@preNoticeCountdown": {
+    "placeholders": {
+      "minutes": {
+        "type": "int"
+      }
+    }
+  },
+  "eqDeviceEditTitle": "编辑设备",
+  "eqDeviceNameLabel": "设备名称",
+  "eqDeviceNameHint": "例：客厅音箱",
+  "eqDeviceNameConfirm": "保存",
+  "eqDeviceConnected": "已连接"
+}

lib/l10n/gen/app_localizations.dart

@@ -2305,6 +2305,42 @@ abstract class AppLocalizations {
   /// In es, this message translates to:
   /// **'Preset: {presetName}'**
   String advancedEqDevicePresetLabel(Object presetName);
+
+  /// No description provided for @preNoticeCountdown.
+  ///
+  /// In es, this message translates to:
+  /// **'Empieza en {minutes} min'**
+  String preNoticeCountdown(int minutes);
+
+  /// No description provided for @eqDeviceEditTitle.
+  ///
+  /// In es, this message translates to:
+  /// **'Editar dispositivo'**
+  String get eqDeviceEditTitle;
+
+  /// No description provided for @eqDeviceNameLabel.
+  ///
+  /// In es, this message translates to:
+  /// **'Nombre del dispositivo'**
+  String get eqDeviceNameLabel;
+
+  /// No description provided for @eqDeviceNameHint.
+  ///
+  /// In es, this message translates to:
+  /// **'Ej: Altavoz del living'**
+  String get eqDeviceNameHint;
+
+  /// No description provided for @eqDeviceNameConfirm.
+  ///
+  /// In es, this message translates to:
+  /// **'Guardar'**
+  String get eqDeviceNameConfirm;
+
+  /// No description provided for @eqDeviceConnected.
+  ///
+  /// In es, this message translates to:
+  /// **'Conectado'**
+  String get eqDeviceConnected;
 }
 
 class _AppLocalizationsDelegate

lib/l10n/gen/app_localizations_ar.dart

@@ -1247,4 +1247,24 @@ class AppLocalizationsAr extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'الإعداد المسبق: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'يبدأ خلال $minutes دقيقة';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'تعديل الجهاز';
+
+  @override
+  String get eqDeviceNameLabel => 'اسم الجهاز';
+
+  @override
+  String get eqDeviceNameHint => 'مثال: مكبر صوت غرفة المعيشة';
+
+  @override
+  String get eqDeviceNameConfirm => 'حفظ';
+
+  @override
+  String get eqDeviceConnected => 'متصل';
 }

lib/l10n/gen/app_localizations_bn.dart

@@ -1254,4 +1254,24 @@ class AppLocalizationsBn extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'প্রিসেট: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return '$minutes মিনিটে শুরু হবে';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'ডিভাইস সম্পাদনা করুন';
+
+  @override
+  String get eqDeviceNameLabel => 'ডিভাইসের নাম';
+
+  @override
+  String get eqDeviceNameHint => 'যেমন: লিভিং রুমের স্পিকার';
+
+  @override
+  String get eqDeviceNameConfirm => 'সংরক্ষণ করুন';
+
+  @override
+  String get eqDeviceConnected => 'সংযুক্ত';
 }

lib/l10n/gen/app_localizations_de.dart

@@ -1264,4 +1264,24 @@ class AppLocalizationsDe extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'Preset: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'Startet in $minutes Min.';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'Gerät bearbeiten';
+
+  @override
+  String get eqDeviceNameLabel => 'Gerätename';
+
+  @override
+  String get eqDeviceNameHint => 'z. B. Wohnzimmer-Lautsprecher';
+
+  @override
+  String get eqDeviceNameConfirm => 'Speichern';
+
+  @override
+  String get eqDeviceConnected => 'Verbunden';
 }

lib/l10n/gen/app_localizations_en.dart

@@ -1250,4 +1250,24 @@ class AppLocalizationsEn extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'Preset: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'Starts in $minutes min';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'Edit device';
+
+  @override
+  String get eqDeviceNameLabel => 'Device name';
+
+  @override
+  String get eqDeviceNameHint => 'e.g. Living Room Speaker';
+
+  @override
+  String get eqDeviceNameConfirm => 'Save';
+
+  @override
+  String get eqDeviceConnected => 'Connected';
 }

lib/l10n/gen/app_localizations_es.dart

@@ -1259,4 +1259,24 @@ class AppLocalizationsEs extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'Preset: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'Empieza en $minutes min';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'Editar dispositivo';
+
+  @override
+  String get eqDeviceNameLabel => 'Nombre del dispositivo';
+
+  @override
+  String get eqDeviceNameHint => 'Ej: Altavoz del living';
+
+  @override
+  String get eqDeviceNameConfirm => 'Guardar';
+
+  @override
+  String get eqDeviceConnected => 'Conectado';
 }

lib/l10n/gen/app_localizations_fr.dart

@@ -1269,4 +1269,24 @@ class AppLocalizationsFr extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'Preset : $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'Démarre dans $minutes min';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'Modifier l\'appareil';
+
+  @override
+  String get eqDeviceNameLabel => 'Nom de l\'appareil';
+
+  @override
+  String get eqDeviceNameHint => 'ex. : Enceinte salon';
+
+  @override
+  String get eqDeviceNameConfirm => 'Enregistrer';
+
+  @override
+  String get eqDeviceConnected => 'Connecté';
 }

lib/l10n/gen/app_localizations_hi.dart

@@ -1253,4 +1253,24 @@ class AppLocalizationsHi extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'प्रीसेट: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return '$minutes मिनट में शुरू होगा';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'डिवाइस संपादित करें';
+
+  @override
+  String get eqDeviceNameLabel => 'डिवाइस का नाम';
+
+  @override
+  String get eqDeviceNameHint => 'उदा. लिविंग रूम स्पीकर';
+
+  @override
+  String get eqDeviceNameConfirm => 'सहेजें';
+
+  @override
+  String get eqDeviceConnected => 'कनेक्टेड';
 }

lib/l10n/gen/app_localizations_id.dart

@@ -1258,4 +1258,24 @@ class AppLocalizationsId extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'Preset: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'Mulai dalam $minutes menit';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'Edit perangkat';
+
+  @override
+  String get eqDeviceNameLabel => 'Nama perangkat';
+
+  @override
+  String get eqDeviceNameHint => 'Mis: Speaker ruang tamu';
+
+  @override
+  String get eqDeviceNameConfirm => 'Simpan';
+
+  @override
+  String get eqDeviceConnected => 'Terhubung';
 }

lib/l10n/gen/app_localizations_it.dart

@@ -1264,4 +1264,24 @@ class AppLocalizationsIt extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'Preset: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'Inizia tra $minutes min';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'Modifica dispositivo';
+
+  @override
+  String get eqDeviceNameLabel => 'Nome del dispositivo';
+
+  @override
+  String get eqDeviceNameHint => 'Es: Cassa del salotto';
+
+  @override
+  String get eqDeviceNameConfirm => 'Salva';
+
+  @override
+  String get eqDeviceConnected => 'Connesso';
 }

lib/l10n/gen/app_localizations_ja.dart

@@ -1214,4 +1214,24 @@ class AppLocalizationsJa extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'プリセット: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return '$minutes分後に開始';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'デバイスを編集';
+
+  @override
+  String get eqDeviceNameLabel => 'デバイス名';
+
+  @override
+  String get eqDeviceNameHint => '例：リビングのスピーカー';
+
+  @override
+  String get eqDeviceNameConfirm => '保存';
+
+  @override
+  String get eqDeviceConnected => '接続中';
 }

lib/l10n/gen/app_localizations_pt.dart

@@ -1256,4 +1256,24 @@ class AppLocalizationsPt extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'Preset: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'Começa em $minutes min';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'Editar dispositivo';
+
+  @override
+  String get eqDeviceNameLabel => 'Nome do dispositivo';
+
+  @override
+  String get eqDeviceNameHint => 'Ex: Caixa da sala';
+
+  @override
+  String get eqDeviceNameConfirm => 'Salvar';
+
+  @override
+  String get eqDeviceConnected => 'Conectado';
 }

lib/l10n/gen/app_localizations_ru.dart

@@ -1260,4 +1260,24 @@ class AppLocalizationsRu extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return 'Пресет: $presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return 'Начнётся через $minutes мин';
+  }
+
+  @override
+  String get eqDeviceEditTitle => 'Изменить устройство';
+
+  @override
+  String get eqDeviceNameLabel => 'Название устройства';
+
+  @override
+  String get eqDeviceNameHint => 'Напр.: Колонка в гостиной';
+
+  @override
+  String get eqDeviceNameConfirm => 'Сохранить';
+
+  @override
+  String get eqDeviceConnected => 'Подключено';
 }

lib/l10n/gen/app_localizations_zh.dart

@@ -1207,4 +1207,24 @@ class AppLocalizationsZh extends AppLocalizations {
   String advancedEqDevicePresetLabel(Object presetName) {
     return '预设：$presetName';
   }
+
+  @override
+  String preNoticeCountdown(int minutes) {
+    return '$minutes分钟后开始';
+  }
+
+  @override
+  String get eqDeviceEditTitle => '编辑设备';
+
+  @override
+  String get eqDeviceNameLabel => '设备名称';
+
+  @override
+  String get eqDeviceNameHint => '例：客厅音箱';
+
+  @override
+  String get eqDeviceNameConfirm => '保存';
+
+  @override
+  String get eqDeviceConnected => '已连接';
 }