Version initiale de Gestion Prix

App Flutter de gestion de stock/prix pour tablette Android (100% local) :
scan code-barres (OpenFoodFacts), prix au kilo/litre, packs, inventaire,
prix d'achat + marge, filtres de tri, étiquettes PDF, design noir & blanc.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.build/
+.buildlog/
+.history
+.svn/
+.swiftpm/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+/coverage/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "ad70ec4617166f1c38e5d2bfd388af71fda14f06"
+  channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: ad70ec4617166f1c38e5d2bfd388af71fda14f06
+      base_revision: ad70ec4617166f1c38e5d2bfd388af71fda14f06
+    - platform: android
+      create_revision: ad70ec4617166f1c38e5d2bfd388af71fda14f06
+      base_revision: ad70ec4617166f1c38e5d2bfd388af71fda14f06
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

README.md

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+# Gestion Prix Produit
+
+App Android (Flutter) de gestion de stock et de prix pour un magasin, conçue pour
+une tablette Android 12 en mode portrait. **Stockage 100% local** (SQLite) : aucune
+connexion serveur nécessaire, fonctionne hors-ligne. Une connexion internet sert
+seulement à récupérer le nom + l'image d'un produit lors du scan.
+
+## Fonctions
+
+- **Produits** : liste de tous les produits (nom, prix HT / TTC), recherche, édition.
+- **Scanner** : scan d'un code-barres puis recherche automatique du nom + image via
+  [OpenFoodFacts](https://world.openfoodfacts.org), saisie des prix, ajout à la liste.
+- **Étiquettes** : sélection des produits (un par un ou « tout sélectionner ») puis
+  génération d'une planche A4 d'étiquettes (nom, prix, code-barres) imprimable sur une
+  imprimante Wi-Fi classique (ex : Canon TS4550) via le système d'impression Android.
+
+## Techno
+
+- Flutter (Material 3, thème noir & blanc + accent bleu)
+- `mobile_scanner` (scan code-barres, open source / ML Kit)
+- `sqflite` (base de données locale SQLite, persistée sur la tablette)
+- `pdf` + `printing` (étiquettes)
+
+## Lancer l'app
+
+```bash
+flutter run
+```
+
+Les produits sont enregistrés localement et conservés d'une session à l'autre.
+
+## Structure
+
+```text
+lib/
+├── main.dart                       # init + thème + navigation
+├── config.dart                     # TVA par défaut
+├── theme.dart                      # thème noir & blanc + accent
+├── models/produit.dart
+├── services/
+│   ├── local_db.dart               # base SQLite locale
+│   ├── produit_repository.dart     # source de vérité (CRUD)
+│   ├── openfoodfacts_service.dart  # lookup code-barres
+│   └── etiquette_pdf.dart          # génération PDF des étiquettes
+├── screens/
+│   ├── home_shell.dart             # 3 onglets + barre de navigation
+│   ├── produits_screen.dart
+│   ├── scan_screen.dart
+│   ├── produit_edit_screen.dart
+│   └── etiquettes_screen.dart
+├── widgets/produit_image.dart
+└── utils/format.dart
+```

analysis_options.yaml

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+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at https://dart.dev/lints.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

android/.gitignore

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+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+.cxx/
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/to/reference-keystore
+key.properties
+**/*.keystore
+**/*.jks

android/app/build.gradle.kts

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+plugins {
+    id("com.android.application")
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id("dev.flutter.flutter-gradle-plugin")
+}
+
+android {
+    namespace = "com.magasin.gestion_prix_produit"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId = "com.magasin.gestion_prix_produit"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://flutter.dev/to/review-gradle-config.
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutter.versionCode
+        versionName = flutter.versionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig = signingConfigs.getByName("debug")
+            // R8/minification désactivé : il supprimait des classes de ML Kit
+            // (scanner de code-barres) → caméra HS en release. Off = comportement debug.
+            isMinifyEnabled = false
+            isShrinkResources = false
+        }
+    }
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17
+    }
+}
+
+flutter {
+    source = "../.."
+}

android/app/src/debug/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/app/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-feature android:name="android.hardware.camera" android:required="false" />
+    <application
+        android:label="Gestion Prix"
+        android:name="${applicationName}"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:launchMode="singleTop"
+            android:taskAffinity=""
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
+        </intent>
+    </queries>
+</manifest>

android/app/src/main/kotlin/com/magasin/gestion_prix_produit/MainActivity.kt

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+package com.magasin.gestion_prix_produit
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity : FlutterActivity()

android/app/src/main/res/drawable-v21/launch_background.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/drawable/launch_background.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <background android:drawable="@color/ic_launcher_background"/>
+  <foreground>
+      <inset
+          android:drawable="@drawable/ic_launcher_foreground"
+          android:inset="16%" />
+  </foreground>
+</adaptive-icon>

android/app/src/main/res/values-night/styles.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

android/app/src/main/res/values/colors.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#14141A</color>
+</resources>

android/app/src/main/res/values/styles.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/build.gradle.kts

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+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+val newBuildDir: Directory =
+    rootProject.layout.buildDirectory
+        .dir("../../build")
+        .get()
+rootProject.layout.buildDirectory.value(newBuildDir)
+
+subprojects {
+    val newSubprojectBuildDir: Directory = newBuildDir.dir(project.name)
+    project.layout.buildDirectory.value(newSubprojectBuildDir)
+}
+subprojects {
+    project.evaluationDependsOn(":app")
+}
+
+tasks.register<Delete>("clean") {
+    delete(rootProject.layout.buildDirectory)
+}

android/gradle.properties

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+org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
+android.useAndroidX=true
+# This newDsl flag was added by the Flutter template
+android.newDsl=false
+# This builtInKotlin flag was added by the Flutter template
+android.builtInKotlin=false

android/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-all.zip

android/settings.gradle.kts

@@ -0,0 +1,26 @@
+pluginManagement {
+    val flutterSdkPath =
+        run {
+            val properties = java.util.Properties()
+            file("local.properties").inputStream().use { properties.load(it) }
+            val flutterSdkPath = properties.getProperty("flutter.sdk")
+            require(flutterSdkPath != null) { "flutter.sdk not set in local.properties" }
+            flutterSdkPath
+        }
+
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id("dev.flutter.flutter-plugin-loader") version "1.0.0"
+    id("com.android.application") version "9.0.1" apply false
+    id("org.jetbrains.kotlin.android") version "2.3.20" apply false
+}
+
+include(":app")

lib/config.dart

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+/// Configuration de l'application (stockage 100% local).
+class Config {
+  /// Taux de TVA par défaut utilisé pour calculer le prix TTC à partir du HT.
+  static const double tvaParDefaut = 0.20; // 20 %
+}

lib/main.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+import 'screens/home_shell.dart';
+import 'services/produit_repository.dart';
+import 'theme.dart';
+
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  // App verrouillée en portrait (tablette).
+  await SystemChrome.setPreferredOrientations([
+    DeviceOrientation.portraitUp,
+    DeviceOrientation.portraitDown,
+  ]);
+
+  // Chargement initial des produits depuis la base locale.
+  await ProduitRepository.instance.charger();
+
+  runApp(const MonApp());
+}
+
+class MonApp extends StatelessWidget {
+  const MonApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Gestion Prix',
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.clair(),
+      darkTheme: AppTheme.sombre(),
+      themeMode: ThemeMode.light,
+      home: const HomeShell(),
+    );
+  }
+}

lib/models/produit.dart

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+/// Unités de vente supportées (poids et volume).
+class Unites {
+  static const g = 'g';
+  static const kg = 'kg';
+  static const ml = 'ml';
+  static const cl = 'cl';
+  static const l = 'L';
+
+  /// Ancienne valeur (produits d'avant) : vendu à l'unité. Plus proposée.
+  static const piece = 'piece';
+
+  static const tout = [g, kg, ml, cl, l];
+
+  /// Vrai si le code est une unité de mesure valide (donc pas 'piece'/null).
+  static bool estValide(String? code) => tout.contains(code);
+
+  static String libelle(String? code) => switch (code) {
+        g => 'g',
+        kg => 'kg',
+        ml => 'ml',
+        cl => 'cl',
+        l => 'L',
+        _ => '',
+      };
+}
+
+/// Un produit du stock.
+class Produit {
+  final String id;
+  final String? codeBarres;
+  final String nom;
+  final String? imageUrl;
+
+  /// Prix de vente (au client).
+  final double prix;
+
+  /// Prix d'achat (coût). 0 = non renseigné.
+  final double prixAchat;
+
+  /// Contenance d'UN contenant (ex : 330 pour 330 ml, 400 pour 400 g).
+  final double? quantite;
+
+  /// Unité de la quantité : voir [Unites].
+  final String? unite;
+
+  /// Nombre de contenants pour un pack (ex : 6 pour un pack de 6 bières).
+  /// Null ou 1 = produit à l'unité (pas un pack).
+  final int? nbContenants;
+
+  /// Horodatage de création (ms) — sert au tri par ordre d'ajout.
+  final int creeLe;
+
+  /// Quantité en stock (inventaire).
+  final int stock;
+
+  const Produit({
+    required this.id,
+    this.codeBarres,
+    required this.nom,
+    this.imageUrl,
+    required this.prix,
+    this.prixAchat = 0,
+    this.quantite,
+    this.unite,
+    this.nbContenants,
+    this.creeLe = 0,
+    this.stock = 0,
+  });
+
+  bool get estPack => (nbContenants ?? 1) > 1;
+
+  /// Gain en euros (vente − achat). Pertinent seulement si un prix d'achat est saisi.
+  double get gain => prix - prixAchat;
+
+  /// Coefficient multiplicateur (prix de vente ÷ prix d'achat), ex : 1,5.
+  /// Null si le prix d'achat n'est pas renseigné. Sert au tri.
+  double? get coefficient => prixAchat > 0 ? prix / prixAchat : null;
+
+  /// Marge affichée : le coefficient (1,5) suivi d'un « % », ex : « 1,5 % », « 2 % ».
+  /// Vide si le prix d'achat n'est pas renseigné.
+  String get margeLibelle {
+    final c = coefficient;
+    if (c == null) return '';
+    var s = c.toStringAsFixed(2).replaceAll('.', ',');
+    if (s.contains(',')) {
+      s = s.replaceAll(RegExp(r'0+$'), '').replaceAll(RegExp(r',$'), '');
+    }
+    return '$s %';
+  }
+
+  Produit copyWith({
+    String? id,
+    String? codeBarres,
+    String? nom,
+    String? imageUrl,
+    double? prix,
+    double? prixAchat,
+    double? quantite,
+    String? unite,
+    int? nbContenants,
+    int? creeLe,
+    int? stock,
+  }) {
+    return Produit(
+      id: id ?? this.id,
+      codeBarres: codeBarres ?? this.codeBarres,
+      nom: nom ?? this.nom,
+      imageUrl: imageUrl ?? this.imageUrl,
+      prix: prix ?? this.prix,
+      prixAchat: prixAchat ?? this.prixAchat,
+      quantite: quantite ?? this.quantite,
+      unite: unite ?? this.unite,
+      nbContenants: nbContenants ?? this.nbContenants,
+      creeLe: creeLe ?? this.creeLe,
+      stock: stock ?? this.stock,
+    );
+  }
+
+  /// Prix à l'unité de mesure (€/kg ou €/L) — obligation légale pour les
+  /// produits vendus au poids/volume. Null pour les produits à la pièce.
+  ({double valeur, String suffixe})? get prixMesure {
+    final q = quantite;
+    if (q == null || q <= 0) return null;
+    // Pour un pack, on calcule sur le volume/poids TOTAL (contenance × nombre).
+    final total = q * (nbContenants ?? 1);
+    return switch (unite) {
+      Unites.g => (valeur: prix / (total / 1000), suffixe: '/kg'),
+      Unites.kg => (valeur: prix / total, suffixe: '/kg'),
+      Unites.ml => (valeur: prix / (total / 1000), suffixe: '/L'),
+      Unites.cl => (valeur: prix / (total / 100), suffixe: '/L'),
+      Unites.l => (valeur: prix / total, suffixe: '/L'),
+      _ => null,
+    };
+  }
+
+  /// Libellé compact de la quantité, ex : « 330ml », « 1kg », « 75cl »,
+  /// ou « 6x33cl » pour un pack. Vide si absent.
+  String get quantiteLibelle {
+    final q = quantite;
+    if (q == null || q <= 0 || !Unites.estValide(unite)) return '';
+    final n = q == q.roundToDouble()
+        ? q.toInt().toString()
+        : q.toString().replaceAll('.', ',');
+    final base = '$n${Unites.libelle(unite)}';
+    return estPack ? '${nbContenants}X$base' : base;
+  }
+
+  /// Titre affiché (liste + étiquette) : la quantité est intégrée devant le nom,
+  /// ex : « 1kg Farine », « 75cl Coca-Cola ». Sinon juste le nom.
+  String get titre {
+    final ql = quantiteLibelle;
+    return ql.isEmpty ? nom : '$ql $nom';
+  }
+
+  factory Produit.fromMap(Map<String, dynamic> map) {
+    return Produit(
+      id: map['id'].toString(),
+      codeBarres: map['code_barres'] as String?,
+      nom: (map['nom'] as String?) ?? '',
+      imageUrl: map['image_url'] as String?,
+      prix: (map['prix'] as num?)?.toDouble() ?? 0,
+      prixAchat: (map['prix_achat'] as num?)?.toDouble() ?? 0,
+      quantite: (map['quantite'] as num?)?.toDouble(),
+      unite: map['unite'] as String?,
+      nbContenants: (map['nb_contenants'] as num?)?.toInt(),
+      creeLe: (map['cree_le'] as num?)?.toInt() ?? 0,
+      stock: (map['stock'] as num?)?.toInt() ?? 0,
+    );
+  }
+
+  /// Map pour insertion/mise à jour dans la base (sans l'id, généré par SQLite).
+  Map<String, dynamic> toInsertMap() {
+    return {
+      'code_barres': codeBarres,
+      'nom': nom,
+      'image_url': imageUrl,
+      'prix': prix,
+      'prix_achat': prixAchat,
+      'quantite': quantite,
+      'unite': unite,
+      'nb_contenants': nbContenants,
+      'stock': stock,
+    };
+  }
+}

lib/screens/etiquettes_screen.dart

@@ -0,0 +1,276 @@
+import 'package:flutter/material.dart';
+import 'package:printing/printing.dart';
+
+import '../models/produit.dart';
+import '../services/etiquette_pdf.dart';
+import '../services/produit_repository.dart';
+import '../theme.dart';
+import '../utils/format.dart';
+import '../utils/tri.dart';
+import '../widgets/produit_image.dart';
+
+/// Onglet 3 : sélection de produits puis génération/impression des étiquettes.
+class EtiquettesScreen extends StatefulWidget {
+  const EtiquettesScreen({super.key});
+
+  @override
+  State<EtiquettesScreen> createState() => _EtiquettesScreenState();
+}
+
+class _EtiquettesScreenState extends State<EtiquettesScreen> {
+  final _repo = ProduitRepository.instance;
+  final Set<String> _selection = {};
+  Tri _tri = Tri.recent;
+
+  bool _tousSelectionnes(List<Produit> produits) =>
+      produits.isNotEmpty && _selection.length == produits.length;
+
+  void _basculerTout(List<Produit> produits) {
+    setState(() {
+      if (_tousSelectionnes(produits)) {
+        _selection.clear();
+      } else {
+        _selection
+          ..clear()
+          ..addAll(produits.map((p) => p.id));
+      }
+    });
+  }
+
+  Future<void> _imprimer(List<Produit> produits) async {
+    final choisis =
+        produits.where((p) => _selection.contains(p.id)).toList();
+    if (choisis.isEmpty) return;
+
+    await Printing.layoutPdf(
+      name: 'etiquettes_prix',
+      onLayout: (format) => EtiquettePdf.construire(choisis),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: SafeArea(
+        child: ListenableBuilder(
+          listenable: _repo,
+          builder: (context, _) {
+            final produits = trierProduits(_repo.produits, _tri);
+            // Nettoie la sélection des produits supprimés.
+            _selection.retainWhere((id) => produits.any((p) => p.id == id));
+
+            return Column(
+              children: [
+                _entete(produits),
+                Expanded(
+                  child: produits.isEmpty
+                      ? _vide()
+                      : ListView.separated(
+                          padding: const EdgeInsets.fromLTRB(16, 4, 16, 120),
+                          itemCount: produits.length,
+                          separatorBuilder: (_, _) =>
+                              const SizedBox(height: 8),
+                          itemBuilder: (_, i) {
+                            final p = produits[i];
+                            final sel = _selection.contains(p.id);
+                            return _LigneSelection(
+                              produit: p,
+                              selectionne: sel,
+                              onTap: () => setState(() {
+                                sel
+                                    ? _selection.remove(p.id)
+                                    : _selection.add(p.id);
+                              }),
+                            );
+                          },
+                        ),
+                ),
+              ],
+            );
+          },
+        ),
+      ),
+      floatingActionButton: ListenableBuilder(
+        listenable: _repo,
+        builder: (context, _) {
+          final n = _selection.length;
+          return FloatingActionButton.extended(
+            onPressed: n == 0
+                ? null
+                : () => _imprimer(trierProduits(_repo.produits, _tri)),
+            backgroundColor: n == 0 ? Colors.grey : AppTheme.accent,
+            foregroundColor: Colors.white,
+            icon: const Icon(Icons.print),
+            label: Text(n == 0 ? 'Imprimer' : 'Imprimer ($n)'),
+          );
+        },
+      ),
+    );
+  }
+
+  Widget _entete(List<Produit> produits) {
+    return Padding(
+      padding: const EdgeInsets.fromLTRB(16, 12, 16, 8),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Text('Étiquettes',
+              style: TextStyle(
+                  fontSize: 30,
+                  fontWeight: FontWeight.w800,
+                  letterSpacing: -1)),
+          const SizedBox(height: 4),
+          const Text('Sélectionne les produits à imprimer',
+              style: TextStyle(color: AppTheme.grisTexte, fontSize: 14)),
+          const SizedBox(height: 12),
+          Row(
+            children: [
+              Text('${_selection.length} sélectionné(s)',
+                  style: const TextStyle(fontWeight: FontWeight.w600)),
+              const Spacer(),
+              TextButton.icon(
+                onPressed:
+                    produits.isEmpty ? null : () => _basculerTout(produits),
+                icon: Icon(_tousSelectionnes(produits)
+                    ? Icons.remove_done
+                    : Icons.done_all),
+                label: Text(_tousSelectionnes(produits)
+                    ? 'Tout désélectionner'
+                    : 'Tout sélectionner'),
+                style: TextButton.styleFrom(foregroundColor: AppTheme.accent),
+              ),
+            ],
+          ),
+          const SizedBox(height: 8),
+          SizedBox(
+            height: 36,
+            child: ListView(
+              scrollDirection: Axis.horizontal,
+              children: [for (final t in Tri.values) _puceTri(t)],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _puceTri(Tri t) {
+    final sel = _tri == t;
+    return Padding(
+      padding: const EdgeInsets.only(right: 8),
+      child: ChoiceChip(
+        label: Text(t.libelle),
+        selected: sel,
+        onSelected: (_) => setState(() => _tri = t),
+        showCheckmark: false,
+        labelStyle: TextStyle(
+          fontWeight: FontWeight.w600,
+          color: sel ? Colors.white : AppTheme.grisTexte,
+        ),
+        selectedColor: AppTheme.accent,
+        backgroundColor: Theme.of(context).colorScheme.surface,
+        side: BorderSide(
+          color: sel
+              ? AppTheme.accent
+              : Theme.of(context).colorScheme.outlineVariant,
+        ),
+      ),
+    );
+  }
+
+  Widget _vide() {
+    return const Center(
+      child: Padding(
+        padding: EdgeInsets.all(32),
+        child: Text(
+          'Ajoute d’abord des produits pour pouvoir imprimer leurs étiquettes.',
+          textAlign: TextAlign.center,
+          style: TextStyle(color: AppTheme.grisTexte, fontSize: 15),
+        ),
+      ),
+    );
+  }
+}
+
+class _LigneSelection extends StatelessWidget {
+  final Produit produit;
+  final bool selectionne;
+  final VoidCallback onTap;
+
+  const _LigneSelection({
+    required this.produit,
+    required this.selectionne,
+    required this.onTap,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    return Material(
+      color: selectionne
+          ? AppTheme.accent.withValues(alpha: 0.08)
+          : scheme.surface,
+      borderRadius: BorderRadius.circular(16),
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(16),
+        child: Container(
+          padding: const EdgeInsets.all(10),
+          decoration: BoxDecoration(
+            borderRadius: BorderRadius.circular(16),
+            border: Border.all(
+              color: selectionne
+                  ? AppTheme.accent
+                  : scheme.outlineVariant.withValues(alpha: 0.5),
+              width: selectionne ? 1.6 : 1,
+            ),
+          ),
+          child: Row(
+            children: [
+              _Case(coche: selectionne),
+              const SizedBox(width: 12),
+              ProduitImage(url: produit.imageUrl, taille: 44, radius: 10),
+              const SizedBox(width: 12),
+              Expanded(
+                child: Text(produit.titre,
+                    maxLines: 2,
+                    overflow: TextOverflow.ellipsis,
+                    style: const TextStyle(
+                        fontSize: 15, fontWeight: FontWeight.w600)),
+              ),
+              const SizedBox(width: 8),
+              Text(euro(produit.prix),
+                  style: const TextStyle(
+                      fontSize: 16, fontWeight: FontWeight.w800)),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _Case extends StatelessWidget {
+  final bool coche;
+  const _Case({required this.coche});
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedContainer(
+      duration: const Duration(milliseconds: 120),
+      width: 26,
+      height: 26,
+      decoration: BoxDecoration(
+        color: coche ? AppTheme.accent : Colors.transparent,
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(
+          color: coche ? AppTheme.accent : AppTheme.grisTexte,
+          width: 2,
+        ),
+      ),
+      child: coche
+          ? const Icon(Icons.check, size: 18, color: Colors.white)
+          : null,
+    );
+  }
+}

lib/screens/home_shell.dart

@@ -0,0 +1,52 @@
+import 'package:flutter/material.dart';
+
+import 'etiquettes_screen.dart';
+import 'produits_screen.dart';
+import 'scan_screen.dart';
+
+/// Coquille principale : contient les 3 onglets et la barre de navigation.
+class HomeShell extends StatefulWidget {
+  const HomeShell({super.key});
+
+  @override
+  State<HomeShell> createState() => _HomeShellState();
+}
+
+class _HomeShellState extends State<HomeShell> {
+  int _index = 0;
+
+  @override
+  Widget build(BuildContext context) {
+    final pages = [
+      ProduitsScreen(onAllerScanner: () => setState(() => _index = 1)),
+      ScanScreen(active: _index == 1),
+      const EtiquettesScreen(),
+    ];
+    return Scaffold(
+      body: IndexedStack(index: _index, children: pages),
+      bottomNavigationBar: NavigationBar(
+        selectedIndex: _index,
+        height: 68,
+        labelBehavior: NavigationDestinationLabelBehavior.alwaysShow,
+        onDestinationSelected: (i) => setState(() => _index = i),
+        destinations: const [
+          NavigationDestination(
+            icon: Icon(Icons.inventory_2_outlined),
+            selectedIcon: Icon(Icons.inventory_2),
+            label: 'Produits',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.qr_code_scanner_outlined),
+            selectedIcon: Icon(Icons.qr_code_scanner),
+            label: 'Scanner',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.print_outlined),
+            selectedIcon: Icon(Icons.print),
+            label: 'Étiquettes',
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/screens/produit_edit_screen.dart

@@ -0,0 +1,703 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:image_picker/image_picker.dart';
+
+import '../models/produit.dart';
+import '../services/photo_service.dart';
+import '../services/produit_repository.dart';
+import '../services/reglages.dart';
+import '../theme.dart';
+import '../widgets/produit_image.dart';
+
+/// Écran d'ajout / modification d'un produit.
+///
+/// - [produit] fourni  → mode modification.
+/// - sinon             → mode création (les champs *Initial servent au scan).
+class ProduitEditScreen extends StatefulWidget {
+  final Produit? produit;
+  final String? codeBarresInitial;
+  final String? nomInitial;
+  final String? imageUrlInitial;
+  final double? quantiteInitial;
+  final String? uniteInitial;
+
+  const ProduitEditScreen({
+    super.key,
+    this.produit,
+    this.codeBarresInitial,
+    this.nomInitial,
+    this.imageUrlInitial,
+    this.quantiteInitial,
+    this.uniteInitial,
+  });
+
+  @override
+  State<ProduitEditScreen> createState() => _ProduitEditScreenState();
+}
+
+class _ProduitEditScreenState extends State<ProduitEditScreen> {
+  final _repo = ProduitRepository.instance;
+  final _formKey = GlobalKey<FormState>();
+
+  late final TextEditingController _nom;
+  late final TextEditingController _prix;
+  late final TextEditingController _prixAchat;
+  late final TextEditingController _quantite;
+  late final TextEditingController _nbContenants;
+  late final TextEditingController _stock;
+
+  String? _codeBarres;
+  String? _imageUrl;
+  late String _unite;
+  bool _estPack = false;
+  bool _enregistre = false;
+
+  bool get _modification => widget.produit != null;
+
+  /// Produit scanné mais absent d'OpenFoodFacts (nom à saisir à la main).
+  bool get _scanNonTrouve =>
+      widget.produit == null &&
+      widget.codeBarresInitial != null &&
+      (widget.nomInitial == null || widget.nomInitial!.trim().isEmpty);
+
+  @override
+  void initState() {
+    super.initState();
+    final p = widget.produit;
+    _nom = TextEditingController(text: p?.nom ?? widget.nomInitial ?? '');
+    _prix = TextEditingController(text: p != null ? _fmt(p.prix) : '');
+    _prixAchat = TextEditingController(
+        text: (p != null && p.prixAchat > 0) ? _fmt(p.prixAchat) : '');
+    final q = p?.quantite ?? widget.quantiteInitial;
+    _quantite = TextEditingController(
+        text: (q != null && q > 0) ? _fmtQuantite(q) : '');
+    _estPack = p?.estPack ?? false;
+    _nbContenants = TextEditingController(
+        text: (p != null && p.estPack) ? p.nbContenants.toString() : '');
+    _stock = TextEditingController(text: (p?.stock ?? 0).toString());
+    // Unité : celle du produit si valide, sinon celle du scan, sinon 'g' par défaut.
+    _unite = Unites.estValide(p?.unite)
+        ? p!.unite!
+        : (Unites.estValide(widget.uniteInitial) ? widget.uniteInitial! : Unites.g);
+    _codeBarres = p?.codeBarres ?? widget.codeBarresInitial;
+    _imageUrl = p?.imageUrl ?? widget.imageUrlInitial;
+
+    // Nouveau produit sans unité connue → on re-propose la dernière unité utilisée.
+    if (p == null && !Unites.estValide(widget.uniteInitial)) {
+      Reglages.instance.derniereUnite().then((u) {
+        if (mounted && _quantite.text.isEmpty && Unites.estValide(u)) {
+          setState(() => _unite = u);
+        }
+      });
+    }
+  }
+
+  @override
+  void dispose() {
+    _nom.dispose();
+    _prix.dispose();
+    _prixAchat.dispose();
+    _quantite.dispose();
+    _nbContenants.dispose();
+    _stock.dispose();
+    super.dispose();
+  }
+
+  String _fmtQuantite(double v) =>
+      v == v.roundToDouble() ? v.toInt().toString() : v.toString();
+
+  String _fmt(double v) =>
+      v.toStringAsFixed(2).replaceAll('.', ',');
+
+  double _parse(String s) =>
+      double.tryParse(s.trim().replaceAll(',', '.')) ?? 0;
+
+  Future<void> _enregistrer() async {
+    if (!_formKey.currentState!.validate()) return;
+    setState(() => _enregistre = true);
+
+    final base = widget.produit;
+    final q = _parse(_quantite.text);
+    final nb = _estPack ? (int.tryParse(_nbContenants.text.trim()) ?? 0) : 1;
+    final produit = Produit(
+      id: base?.id ?? 'temp',
+      codeBarres: _codeBarres,
+      nom: _nom.text.trim(),
+      imageUrl: _imageUrl,
+      prix: _parse(_prix.text),
+      prixAchat: _parse(_prixAchat.text),
+      quantite: q > 0 ? q : null,
+      unite: _unite,
+      nbContenants: (_estPack && nb > 1) ? nb : null,
+      creeLe: base?.creeLe ?? 0,
+      stock: int.tryParse(_stock.text.trim()) ?? 0,
+    );
+
+    try {
+      if (_modification) {
+        await _repo.modifier(produit);
+      } else {
+        await _repo.ajouter(produit);
+      }
+      // Mémorise l'unité pour accélérer la saisie du produit suivant.
+      await Reglages.instance.memoriserUnite(produit.unite ?? Unites.piece);
+      if (mounted) Navigator.of(context).pop(true);
+    } catch (e) {
+      setState(() => _enregistre = false);
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Erreur : $e')),
+        );
+      }
+    }
+  }
+
+  Future<void> _changerPhoto() async {
+    FocusScope.of(context).unfocus();
+    final action = await showModalBottomSheet<String>(
+      context: context,
+      showDragHandle: true,
+      builder: (ctx) => SafeArea(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            ListTile(
+              leading: const Icon(Icons.photo_camera, color: AppTheme.accent),
+              title: const Text('Prendre une photo'),
+              onTap: () => Navigator.pop(ctx, 'camera'),
+            ),
+            ListTile(
+              leading: const Icon(Icons.photo_library, color: AppTheme.accent),
+              title: const Text('Choisir dans la galerie'),
+              onTap: () => Navigator.pop(ctx, 'gallery'),
+            ),
+            if (_imageUrl != null)
+              ListTile(
+                leading: const Icon(Icons.delete_outline, color: Colors.red),
+                title: const Text('Supprimer la photo'),
+                onTap: () => Navigator.pop(ctx, 'remove'),
+              ),
+          ],
+        ),
+      ),
+    );
+    if (action == null) return;
+    if (action == 'remove') {
+      setState(() => _imageUrl = null);
+      return;
+    }
+    final source =
+        action == 'camera' ? ImageSource.camera : ImageSource.gallery;
+    try {
+      final chemin = await PhotoService.choisir(source);
+      if (chemin != null && mounted) setState(() => _imageUrl = chemin);
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Photo impossible : $e')),
+        );
+      }
+    }
+  }
+
+  Future<void> _supprimer() async {
+    final ok = await showDialog<bool>(
+      context: context,
+      builder: (_) => AlertDialog(
+        title: const Text('Supprimer ce produit ?'),
+        content: Text('« ${widget.produit!.nom} » sera retiré de la liste.'),
+        actions: [
+          TextButton(
+              onPressed: () => Navigator.pop(context, false),
+              child: const Text('Annuler')),
+          FilledButton(
+            style: FilledButton.styleFrom(backgroundColor: Colors.red),
+            onPressed: () => Navigator.pop(context, true),
+            child: const Text('Supprimer'),
+          ),
+        ],
+      ),
+    );
+    if (ok == true) {
+      await _repo.supprimer(widget.produit!.id);
+      if (mounted) Navigator.of(context).pop(true);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(_modification ? 'Modifier' : 'Nouveau produit'),
+        actions: [
+          if (_modification)
+            IconButton(
+              icon: const Icon(Icons.delete_outline),
+              color: Colors.red,
+              onPressed: _supprimer,
+            ),
+        ],
+      ),
+      body: SafeArea(
+        child: Form(
+          key: _formKey,
+          child: ListView(
+            padding: const EdgeInsets.fromLTRB(16, 8, 16, 24),
+            children: [
+              Center(
+                child: GestureDetector(
+                  onTap: _changerPhoto,
+                  child: Stack(
+                    clipBehavior: Clip.none,
+                    children: [
+                      ProduitImage(url: _imageUrl, taille: 120, radius: 20),
+                      Positioned(
+                        right: -6,
+                        bottom: -6,
+                        child: Container(
+                          padding: const EdgeInsets.all(8),
+                          decoration: BoxDecoration(
+                            color: AppTheme.accent,
+                            shape: BoxShape.circle,
+                            border: Border.all(color: Colors.white, width: 2),
+                          ),
+                          child: const Icon(Icons.photo_camera,
+                              color: Colors.white, size: 18),
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ),
+              const SizedBox(height: 8),
+              Center(
+                child: Text(
+                  _imageUrl == null ? 'Ajouter une photo' : 'Changer la photo',
+                  style: const TextStyle(
+                      color: AppTheme.accent,
+                      fontWeight: FontWeight.w600,
+                      fontSize: 13),
+                ),
+              ),
+              if (_codeBarres != null) ...[
+                const SizedBox(height: 12),
+                Center(
+                  child: Row(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      const Icon(Icons.qr_code, size: 16,
+                          color: AppTheme.grisTexte),
+                      const SizedBox(width: 6),
+                      Text(_codeBarres!,
+                          style: const TextStyle(
+                              color: AppTheme.grisTexte,
+                              fontWeight: FontWeight.w600)),
+                    ],
+                  ),
+                ),
+              ],
+              const SizedBox(height: 20),
+              if (_scanNonTrouve) ...[
+                _banniereNonTrouve(),
+                const SizedBox(height: 16),
+              ],
+              _label('Nom du produit'),
+              TextFormField(
+                controller: _nom,
+                autofocus: !_modification && _nom.text.isEmpty,
+                textCapitalization: TextCapitalization.sentences,
+                onChanged: (_) => setState(() {}),
+                decoration: const InputDecoration(hintText: 'Ex : Nutella 400g'),
+                validator: (v) =>
+                    (v == null || v.trim().isEmpty) ? 'Nom obligatoire' : null,
+              ),
+              const SizedBox(height: 20),
+              Row(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        _label('Prix d\'achat'),
+                        _champPrix(_prixAchat, obligatoire: false),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(width: 14),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        _label('Prix de vente'),
+                        _champPrix(_prix,
+                            autofocus: !_modification && _nom.text.isNotEmpty),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+              _apercuMarge(),
+              const SizedBox(height: 20),
+              _label('Conditionnement'),
+              _toggleUnitePack(),
+              const SizedBox(height: 20),
+              if (!_estPack)
+                Row(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Expanded(
+                      flex: 3,
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [_label('Quantité'), _champQuantite()],
+                      ),
+                    ),
+                    const SizedBox(width: 14),
+                    Expanded(
+                      flex: 2,
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [_label('Unité'), _selecteurUnite()],
+                      ),
+                    ),
+                  ],
+                )
+              else
+                Row(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [_label('Nombre'), _champNombre()],
+                      ),
+                    ),
+                    const SizedBox(width: 10),
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [_label('Contenance'), _champQuantite()],
+                      ),
+                    ),
+                    const SizedBox(width: 10),
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [_label('Unité'), _selecteurUnite()],
+                      ),
+                    ),
+                  ],
+                ),
+              _apercuPrixMesure(),
+              const SizedBox(height: 24),
+              _label('Inventaire (stock)'),
+              _sectionStock(),
+              const SizedBox(height: 24),
+              FilledButton.icon(
+                onPressed: _enregistre ? null : _enregistrer,
+                icon: _enregistre
+                    ? const SizedBox(
+                        width: 18,
+                        height: 18,
+                        child: CircularProgressIndicator(
+                            strokeWidth: 2, color: Colors.white))
+                    : const Icon(Icons.check),
+                label: Text(_modification ? 'Enregistrer' : 'Ajouter à la liste'),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _label(String t) => Padding(
+        padding: const EdgeInsets.only(bottom: 8, left: 4),
+        child: Text(t,
+            style: const TextStyle(
+                fontWeight: FontWeight.w600, fontSize: 14)),
+      );
+
+  Widget _banniereNonTrouve() {
+    return Container(
+      padding: const EdgeInsets.all(12),
+      decoration: BoxDecoration(
+        color: AppTheme.accent.withValues(alpha: 0.08),
+        borderRadius: BorderRadius.circular(12),
+        border: Border.all(color: AppTheme.accent.withValues(alpha: 0.3)),
+      ),
+      child: const Row(
+        children: [
+          Icon(Icons.info_outline, color: AppTheme.accent, size: 20),
+          SizedBox(width: 10),
+          Expanded(
+            child: Text(
+              'Produit non trouvé en ligne. Saisis-le : il sera mémorisé et '
+              'reconnu automatiquement aux prochains scans.',
+              style: TextStyle(fontSize: 13, color: AppTheme.noir),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _champPrix(TextEditingController c,
+      {bool autofocus = false, bool obligatoire = true}) {
+    return TextFormField(
+      controller: c,
+      autofocus: autofocus,
+      keyboardType: const TextInputType.numberWithOptions(decimal: true),
+      inputFormatters: [
+        FilteringTextInputFormatter.allow(RegExp(r'[0-9.,]')),
+      ],
+      onChanged: (_) => setState(() {}),
+      decoration: const InputDecoration(hintText: '0,00', suffixText: '€'),
+      validator: (v) {
+        if (v == null || v.trim().isEmpty) return obligatoire ? 'Requis' : null;
+        if (_parse(v) <= 0) return 'Invalide';
+        return null;
+      },
+    );
+  }
+
+  Widget _apercuMarge() {
+    final achat = _parse(_prixAchat.text);
+    final vente = _parse(_prix.text);
+    if (achat <= 0 || vente <= 0) return const SizedBox.shrink();
+
+    final gain = vente - achat;
+    final coef = vente / achat;
+    final positif = coef >= 1;
+    final couleur = positif ? const Color(0xFF1B873F) : Colors.red;
+    final signe = gain >= 0 ? '+' : '';
+    final gainTxt = '$signe${gain.toStringAsFixed(2).replaceAll('.', ',')} €';
+    final apercu = Produit(id: '', nom: '', prix: vente, prixAchat: achat);
+
+    return Padding(
+      padding: const EdgeInsets.only(top: 10, left: 4),
+      child: Row(
+        children: [
+          Icon(positif ? Icons.trending_up : Icons.trending_down,
+              color: couleur, size: 18),
+          const SizedBox(width: 8),
+          Text('Marge ${apercu.margeLibelle}  ($gainTxt)',
+              style: TextStyle(color: couleur, fontWeight: FontWeight.w700)),
+        ],
+      ),
+    );
+  }
+
+  Widget _champQuantite() {
+    return TextFormField(
+      controller: _quantite,
+      keyboardType: const TextInputType.numberWithOptions(decimal: true),
+      inputFormatters: [
+        FilteringTextInputFormatter.allow(RegExp(r'[0-9.,]')),
+      ],
+      onChanged: (_) => setState(() {}),
+      decoration: const InputDecoration(hintText: '0'),
+      validator: (v) {
+        if (v == null || v.trim().isEmpty) return 'Requis';
+        if (_parse(v) <= 0) return 'Invalide';
+        return null;
+      },
+    );
+  }
+
+  Widget _selecteurUnite() {
+    return DropdownButtonFormField<String>(
+      initialValue: _unite,
+      isExpanded: true,
+      items: [
+        for (final u in Unites.tout)
+          DropdownMenuItem(value: u, child: Text(Unites.libelle(u))),
+      ],
+      onChanged: (v) => setState(() {
+        final nouvelle = v ?? Unites.g;
+        _convertirQuantite(_unite, nouvelle);
+        _unite = nouvelle;
+      }),
+    );
+  }
+
+  /// Convertit la quantité saisie quand on change d'unité dans la même
+  /// dimension (ex : 1500 ml → L = 1,5 ; 1500 g → kg = 1,5).
+  /// Changement de dimension (poids ↔ volume) : on garde la valeur telle quelle.
+  void _convertirQuantite(String from, String to) {
+    if (from == to) return;
+    final q = _parse(_quantite.text);
+    if (q <= 0) return;
+
+    const poids = {Unites.g: 1.0, Unites.kg: 1000.0}; // base : grammes
+    const volume = {Unites.ml: 1.0, Unites.cl: 10.0, Unites.l: 1000.0}; // base : ml
+
+    double? conv;
+    if (poids.containsKey(from) && poids.containsKey(to)) {
+      conv = q * poids[from]! / poids[to]!;
+    } else if (volume.containsKey(from) && volume.containsKey(to)) {
+      conv = q * volume[from]! / volume[to]!;
+    }
+    if (conv != null) {
+      conv = (conv * 1000).round() / 1000; // évite le bruit de virgule flottante
+      _quantite.text = _fmtQuantite(conv);
+    }
+  }
+
+  Widget _toggleUnitePack() {
+    return SizedBox(
+      width: double.infinity,
+      child: SegmentedButton<bool>(
+        segments: const [
+          ButtonSegment(
+              value: false,
+              label: Text('Unité'),
+              icon: Icon(Icons.water_drop_outlined)),
+          ButtonSegment(
+              value: true,
+              label: Text('Pack'),
+              icon: Icon(Icons.inventory_2_outlined)),
+        ],
+        selected: {_estPack},
+        showSelectedIcon: false,
+        onSelectionChanged: (s) => setState(() {
+          _estPack = s.first;
+          // En passant en Pack, on pré-remplit le nombre de contenants à 6
+          // (valeur courante, modifiable) pour que l'étiquette affiche direct « 6X… ».
+          if (_estPack && _nbContenants.text.trim().isEmpty) {
+            _nbContenants.text = '6';
+          }
+        }),
+      ),
+    );
+  }
+
+  Widget _champNombre() {
+    return TextFormField(
+      controller: _nbContenants,
+      keyboardType: TextInputType.number,
+      inputFormatters: [FilteringTextInputFormatter.digitsOnly],
+      onChanged: (_) => setState(() {}),
+      decoration: const InputDecoration(hintText: '6', suffixText: '×'),
+      validator: (v) {
+        if (!_estPack) return null;
+        if ((int.tryParse((v ?? '').trim()) ?? 0) < 2) return '≥ 2';
+        return null;
+      },
+    );
+  }
+
+  void _ajusterStock(int delta) {
+    final cur = int.tryParse(_stock.text.trim()) ?? 0;
+    final n = (cur + delta).clamp(0, 999999);
+    _stock.text = n.toString();
+    setState(() {});
+  }
+
+  Widget _sectionStock() {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Row(
+          children: [
+            _btnStock(Icons.remove, () => _ajusterStock(-1)),
+            const SizedBox(width: 12),
+            Expanded(
+              child: TextFormField(
+                controller: _stock,
+                textAlign: TextAlign.center,
+                keyboardType: TextInputType.number,
+                inputFormatters: [FilteringTextInputFormatter.digitsOnly],
+                onChanged: (_) => setState(() {}),
+                style: const TextStyle(fontSize: 22, fontWeight: FontWeight.w800),
+                decoration: const InputDecoration(suffixText: 'en stock'),
+              ),
+            ),
+            const SizedBox(width: 12),
+            _btnStock(Icons.add, () => _ajusterStock(1)),
+          ],
+        ),
+        const SizedBox(height: 12),
+        Wrap(
+          spacing: 8,
+          runSpacing: 8,
+          alignment: WrapAlignment.center,
+          children: [for (final d in [1, 5, 10, 50]) _chipStock(d)],
+        ),
+      ],
+    );
+  }
+
+  Widget _btnStock(IconData icon, VoidCallback onTap) {
+    return Material(
+      color: AppTheme.accent.withValues(alpha: 0.12),
+      shape: const CircleBorder(),
+      child: InkWell(
+        customBorder: const CircleBorder(),
+        onTap: onTap,
+        child: Padding(
+          padding: const EdgeInsets.all(12),
+          child: Icon(icon, color: AppTheme.accent, size: 22),
+        ),
+      ),
+    );
+  }
+
+  Widget _chipStock(int d) {
+    return ActionChip(
+      label: Text('+$d',
+          style: const TextStyle(
+              fontWeight: FontWeight.w700, color: AppTheme.accent)),
+      onPressed: () => _ajusterStock(d),
+      backgroundColor: AppTheme.accent.withValues(alpha: 0.08),
+      side: BorderSide(color: AppTheme.accent.withValues(alpha: 0.3)),
+    );
+  }
+
+  Widget _apercuPrixMesure() {
+    final q = _parse(_quantite.text);
+    final nb = _estPack ? (int.tryParse(_nbContenants.text.trim()) ?? 0) : 1;
+    final apercu = Produit(
+      id: '',
+      nom: _nom.text.trim(),
+      prix: _parse(_prix.text),
+      quantite: q > 0 ? q : null,
+      unite: _unite,
+      nbContenants: (_estPack && nb > 1) ? nb : null,
+    );
+    final mesure = apercu.prixMesure;
+    if (mesure == null || apercu.nom.isEmpty) return const SizedBox.shrink();
+
+    final txt =
+        '${mesure.valeur.toStringAsFixed(2).replaceAll('.', ',')} €${mesure.suffixe}';
+    return Container(
+      margin: const EdgeInsets.only(top: 14),
+      padding: const EdgeInsets.all(12),
+      decoration: BoxDecoration(
+        color: AppTheme.accent.withValues(alpha: 0.08),
+        borderRadius: BorderRadius.circular(12),
+      ),
+      child: Row(
+        children: [
+          const Icon(Icons.sell_outlined, size: 18, color: AppTheme.accent),
+          const SizedBox(width: 8),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text('Sur l’étiquette : ${apercu.titre}',
+                    style: const TextStyle(
+                        color: AppTheme.noir, fontWeight: FontWeight.w700)),
+                const SizedBox(height: 2),
+                Text('soit $txt',
+                    style: const TextStyle(
+                        color: AppTheme.accent, fontWeight: FontWeight.w600)),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/screens/produits_screen.dart

@@ -0,0 +1,294 @@
+import 'package:flutter/material.dart';
+
+import '../models/produit.dart';
+import '../services/produit_repository.dart';
+import '../theme.dart';
+import '../utils/format.dart';
+import '../utils/tri.dart';
+import '../widgets/produit_image.dart';
+import 'produit_edit_screen.dart';
+
+/// Onglet 1 : liste de tous les produits avec recherche, tri et édition.
+class ProduitsScreen extends StatefulWidget {
+  /// Appelé par le bouton « Ajouter » pour basculer sur l'onglet Scanner.
+  final VoidCallback onAllerScanner;
+
+  const ProduitsScreen({super.key, required this.onAllerScanner});
+
+  @override
+  State<ProduitsScreen> createState() => _ProduitsScreenState();
+}
+
+class _ProduitsScreenState extends State<ProduitsScreen> {
+  final _repo = ProduitRepository.instance;
+  String _recherche = '';
+  Tri _tri = Tri.recent;
+
+  List<Produit> _filtrerEtTrier(List<Produit> tous) {
+    final q = _recherche.trim().toLowerCase();
+    final list = q.isEmpty
+        ? tous
+        : tous
+            .where((p) =>
+                p.nom.toLowerCase().contains(q) ||
+                (p.codeBarres?.contains(q) ?? false))
+            .toList();
+    return trierProduits(list, _tri);
+  }
+
+  Future<void> _ouvrir(Produit p) async {
+    await Navigator.of(context).push(
+      MaterialPageRoute(builder: (_) => ProduitEditScreen(produit: p)),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      floatingActionButton: FloatingActionButton.extended(
+        onPressed: widget.onAllerScanner,
+        backgroundColor: AppTheme.accent,
+        foregroundColor: Colors.white,
+        icon: const Icon(Icons.add),
+        label: const Text('Ajouter'),
+      ),
+      body: SafeArea(
+        child: ListenableBuilder(
+          listenable: _repo,
+          builder: (context, _) {
+            final produits = _filtrerEtTrier(_repo.produits);
+            return CustomScrollView(
+              slivers: [
+                SliverToBoxAdapter(child: _entete(_repo.produits.length)),
+                if (_repo.enCours && _repo.produits.isEmpty)
+                  const SliverFillRemaining(
+                    child: Center(child: CircularProgressIndicator()),
+                  )
+                else if (produits.isEmpty)
+                  SliverFillRemaining(
+                    hasScrollBody: false,
+                    child: _vide(),
+                  )
+                else
+                  SliverPadding(
+                    padding: const EdgeInsets.fromLTRB(16, 4, 16, 96),
+                    sliver: SliverList.separated(
+                      itemCount: produits.length,
+                      separatorBuilder: (_, _) => const SizedBox(height: 10),
+                      itemBuilder: (_, i) => _ProduitCard(
+                        produit: produits[i],
+                        onTap: () => _ouvrir(produits[i]),
+                      ),
+                    ),
+                  ),
+              ],
+            );
+          },
+        ),
+      ),
+    );
+  }
+
+  Widget _entete(int total) {
+    return Padding(
+      padding: const EdgeInsets.fromLTRB(16, 12, 16, 8),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            crossAxisAlignment: CrossAxisAlignment.baseline,
+            textBaseline: TextBaseline.alphabetic,
+            children: [
+              const Text('Produits',
+                  style: TextStyle(
+                      fontSize: 30,
+                      fontWeight: FontWeight.w800,
+                      letterSpacing: -1)),
+              const SizedBox(width: 10),
+              Text('$total',
+                  style: const TextStyle(
+                      fontSize: 18,
+                      fontWeight: FontWeight.w600,
+                      color: AppTheme.grisTexte)),
+              const Spacer(),
+            ],
+          ),
+          const SizedBox(height: 14),
+          TextField(
+            onChanged: (v) => setState(() => _recherche = v),
+            decoration: const InputDecoration(
+              hintText: 'Rechercher un produit…',
+              prefixIcon: Icon(Icons.search),
+            ),
+          ),
+          const SizedBox(height: 12),
+          SizedBox(
+            height: 36,
+            child: ListView(
+              scrollDirection: Axis.horizontal,
+              children: [
+                for (final t in Tri.values) _puceTri(t),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _puceTri(Tri t) {
+    final sel = _tri == t;
+    return Padding(
+      padding: const EdgeInsets.only(right: 8),
+      child: ChoiceChip(
+        label: Text(t.libelle),
+        selected: sel,
+        onSelected: (_) => setState(() => _tri = t),
+        showCheckmark: false,
+        labelStyle: TextStyle(
+          fontWeight: FontWeight.w600,
+          color: sel ? Colors.white : AppTheme.grisTexte,
+        ),
+        selectedColor: AppTheme.accent,
+        backgroundColor: Theme.of(context).colorScheme.surface,
+        side: BorderSide(
+          color: sel
+              ? AppTheme.accent
+              : Theme.of(context).colorScheme.outlineVariant,
+        ),
+      ),
+    );
+  }
+
+  Widget _vide() {
+    return Column(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        const Icon(Icons.inventory_2_outlined,
+            size: 64, color: AppTheme.grisTexte),
+        const SizedBox(height: 16),
+        Text(
+          _recherche.isEmpty
+              ? 'Aucun produit pour l’instant.\nScanne un code-barres pour commencer.'
+              : 'Aucun résultat pour « $_recherche ».',
+          textAlign: TextAlign.center,
+          style: const TextStyle(color: AppTheme.grisTexte, fontSize: 15),
+        ),
+      ],
+    );
+  }
+}
+
+class _ProduitCard extends StatelessWidget {
+  final Produit produit;
+  final VoidCallback onTap;
+
+  const _ProduitCard({required this.produit, required this.onTap});
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(16),
+        child: Padding(
+          padding: const EdgeInsets.all(12),
+          child: Row(
+            children: [
+              ProduitImage(url: produit.imageUrl),
+              const SizedBox(width: 14),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      produit.titre,
+                      maxLines: 2,
+                      overflow: TextOverflow.ellipsis,
+                      style: const TextStyle(
+                          fontSize: 16, fontWeight: FontWeight.w700),
+                    ),
+                    const SizedBox(height: 5),
+                    Row(
+                      children: [
+                        _PastilleStock(stock: produit.stock),
+                        if (produit.codeBarres != null) ...[
+                          const SizedBox(width: 8),
+                          Flexible(
+                            child: Text(produit.codeBarres!,
+                                maxLines: 1,
+                                overflow: TextOverflow.ellipsis,
+                                style: const TextStyle(
+                                    fontSize: 12.5, color: AppTheme.grisTexte)),
+                          ),
+                        ],
+                      ],
+                    ),
+                  ],
+                ),
+              ),
+              const SizedBox(width: 10),
+              Column(
+                crossAxisAlignment: CrossAxisAlignment.end,
+                children: [
+                  Text(euro(produit.prix),
+                      style: const TextStyle(
+                          fontSize: 18, fontWeight: FontWeight.w800)),
+                  if (produit.prixMesure != null)
+                    Text(
+                      '${produit.prixMesure!.valeur.toStringAsFixed(2).replaceAll('.', ',')} €${produit.prixMesure!.suffixe}',
+                      style: const TextStyle(
+                          fontSize: 11.5, color: AppTheme.grisTexte),
+                    ),
+                  if (produit.coefficient != null)
+                    Text(
+                      produit.margeLibelle,
+                      style: TextStyle(
+                        fontSize: 13,
+                        fontWeight: FontWeight.w800,
+                        color: produit.coefficient! >= 1
+                            ? const Color(0xFF1B873F)
+                            : Colors.red,
+                      ),
+                    ),
+                ],
+              ),
+              const Icon(Icons.chevron_right, color: AppTheme.grisTexte),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// Pastille indiquant le stock d'un produit (rouge si épuisé).
+class _PastilleStock extends StatelessWidget {
+  final int stock;
+  const _PastilleStock({required this.stock});
+
+  @override
+  Widget build(BuildContext context) {
+    final epuise = stock <= 0;
+    final couleur = epuise ? Colors.red : AppTheme.accent;
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
+      decoration: BoxDecoration(
+        color: couleur.withValues(alpha: 0.12),
+        borderRadius: BorderRadius.circular(20),
+      ),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(Icons.inventory_2_outlined, size: 13, color: couleur),
+          const SizedBox(width: 4),
+          Text(
+            epuise ? 'Rupture' : '$stock en stock',
+            style: TextStyle(
+                fontSize: 12, fontWeight: FontWeight.w700, color: couleur),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/screens/scan_screen.dart

@@ -0,0 +1,254 @@
+import 'package:flutter/material.dart';
+import 'package:mobile_scanner/mobile_scanner.dart';
+
+import '../models/produit.dart';
+import '../services/openfoodfacts_service.dart';
+import '../services/produit_repository.dart';
+import '../theme.dart';
+import 'produit_edit_screen.dart';
+
+/// Onglet 2 : scan d'un code-barres → recherche OpenFoodFacts → formulaire.
+class ScanScreen extends StatefulWidget {
+  final bool active;
+  const ScanScreen({super.key, required this.active});
+
+  @override
+  State<ScanScreen> createState() => _ScanScreenState();
+}
+
+class _ScanScreenState extends State<ScanScreen> {
+  final _controller = MobileScannerController(
+    detectionSpeed: DetectionSpeed.noDuplicates,
+    formats: const [
+      BarcodeFormat.ean13,
+      BarcodeFormat.ean8,
+      BarcodeFormat.upcA,
+      BarcodeFormat.upcE,
+      BarcodeFormat.code128,
+    ],
+  );
+  final _off = OpenFoodFactsService();
+  final _repo = ProduitRepository.instance;
+
+  bool _traite = false;
+
+  // La caméra est démarrée/arrêtée automatiquement par le widget MobileScanner
+  // quand il est monté/démonté selon l'onglet actif (autoStart). On ne fait
+  // AUCUN start()/stop() manuel ici : ça provoquerait un double démarrage.
+
+  @override
+  void didUpdateWidget(covariant ScanScreen old) {
+    super.didUpdateWidget(old);
+    // En revenant sur l'onglet Scanner, on réautorise la détection.
+    if (widget.active && !old.active) _traite = false;
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  Future<void> _onDetect(BarcodeCapture capture) async {
+    if (_traite || !widget.active) return;
+    final code = capture.barcodes.firstOrNull?.rawValue;
+    if (code == null || code.isEmpty) return;
+
+    // On bloque les détections suivantes pendant le traitement (sans couper la caméra).
+    setState(() => _traite = true);
+
+    // Déjà connu ? → on ouvre directement la fiche.
+    final existant = _repo.parCodeBarres(code);
+    if (existant != null) {
+      await _ouvrirExistant(existant);
+      return;
+    }
+
+    // Sinon on interroge OpenFoodFacts (avec un petit loader).
+    final info = await _off.chercherParCodeBarres(code);
+    if (!mounted) return;
+
+    final ajoute = await Navigator.of(context).push<bool>(
+      MaterialPageRoute(
+        builder: (_) => ProduitEditScreen(
+          codeBarresInitial: code,
+          nomInitial: info?.nom,
+          imageUrlInitial: info?.imageUrl,
+          quantiteInitial: info?.quantite,
+          uniteInitial: info?.unite,
+        ),
+      ),
+    );
+
+    if (mounted) {
+      setState(() => _traite = false);
+      if (ajoute == true) await _popupAjoute();
+    }
+  }
+
+  Future<void> _ouvrirExistant(Produit p) async {
+    await Navigator.of(context).push(
+      MaterialPageRoute(builder: (_) => ProduitEditScreen(produit: p)),
+    );
+    if (mounted) setState(() => _traite = false);
+  }
+
+  /// Ajout manuel via le bouton « + » (sans scanner).
+  Future<void> _ajouterManuel() async {
+    setState(() => _traite = true); // bloque les détections pendant la saisie
+    final ajoute = await Navigator.of(context).push<bool>(
+      MaterialPageRoute(builder: (_) => const ProduitEditScreen()),
+    );
+    if (mounted) {
+      setState(() => _traite = false);
+      if (ajoute == true) await _popupAjoute();
+    }
+  }
+
+  /// Pop-up de confirmation « Produit ajouté », se ferme tout seul.
+  Future<void> _popupAjoute() async {
+    await showDialog<void>(
+      context: context,
+      barrierDismissible: true,
+      builder: (ctx) {
+        final nav = Navigator.of(ctx);
+        Future.delayed(const Duration(milliseconds: 1300), () {
+          if (nav.canPop()) nav.pop();
+        });
+        return Dialog(
+          shape:
+              RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
+          child: Padding(
+            padding: const EdgeInsets.symmetric(vertical: 28, horizontal: 24),
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Container(
+                  padding: const EdgeInsets.all(14),
+                  decoration: BoxDecoration(
+                    color: Colors.green.withValues(alpha: 0.12),
+                    shape: BoxShape.circle,
+                  ),
+                  child: const Icon(Icons.check_circle,
+                      color: Colors.green, size: 44),
+                ),
+                const SizedBox(height: 16),
+                const Text('Produit ajouté',
+                    style:
+                        TextStyle(fontSize: 18, fontWeight: FontWeight.w700)),
+              ],
+            ),
+          ),
+        );
+      },
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // La caméra (et donc la demande d'autorisation) n'est construite que
+    // lorsque l'onglet Scanner est réellement affiché.
+    if (!widget.active) {
+      return const ColoredBox(color: Colors.black);
+    }
+    return Scaffold(
+      backgroundColor: Colors.black,
+      floatingActionButton: FloatingActionButton.extended(
+        onPressed: _traite ? null : _ajouterManuel,
+        backgroundColor: Colors.white,
+        foregroundColor: AppTheme.noir,
+        icon: const Icon(Icons.add),
+        label: const Text('Ajout manuel'),
+      ),
+      body: Stack(
+        fit: StackFit.expand,
+        children: [
+          MobileScanner(
+            controller: _controller,
+            onDetect: _onDetect,
+            errorBuilder: (context, error) => _erreurCamera(error),
+          ),
+          _cadre(),
+          _bandeauHaut(),
+          if (_traite)
+            Container(
+              color: Colors.black54,
+              child: const Center(
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    CircularProgressIndicator(color: Colors.white),
+                    SizedBox(height: 16),
+                    Text('Recherche du produit…',
+                        style: TextStyle(color: Colors.white, fontSize: 16)),
+                  ],
+                ),
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+
+  Widget _bandeauHaut() {
+    return SafeArea(
+      child: Align(
+        alignment: Alignment.topCenter,
+        child: Container(
+          margin: const EdgeInsets.only(top: 24),
+          padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
+          decoration: BoxDecoration(
+            color: Colors.black.withValues(alpha: 0.55),
+            borderRadius: BorderRadius.circular(30),
+          ),
+          child: const Text(
+            'Vise le code-barres du produit',
+            style: TextStyle(
+                color: Colors.white,
+                fontSize: 15,
+                fontWeight: FontWeight.w600),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _cadre() {
+    return Center(
+      child: Container(
+        width: 260,
+        height: 170,
+        decoration: BoxDecoration(
+          border: Border.all(color: AppTheme.accent, width: 3),
+          borderRadius: BorderRadius.circular(20),
+        ),
+      ),
+    );
+  }
+
+  Widget _erreurCamera(MobileScannerException error) {
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(32),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            const Icon(Icons.no_photography_outlined,
+                color: Colors.white70, size: 56),
+            const SizedBox(height: 16),
+            const Text(
+              'Accès à la caméra impossible.\nAutorise la caméra dans les réglages.',
+              textAlign: TextAlign.center,
+              style: TextStyle(color: Colors.white70, fontSize: 15),
+            ),
+            const SizedBox(height: 20),
+            FilledButton(
+              onPressed: () => _controller.start(),
+              child: const Text('Réessayer'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/services/etiquette_pdf.dart

@@ -0,0 +1,106 @@
+import 'dart:typed_data';
+
+import 'package:pdf/pdf.dart';
+import 'package:pdf/widgets.dart' as pw;
+
+import '../models/produit.dart';
+
+/// Génère une planche A4 d'étiquettes de prix (nom, prix TTC, prix HT, code-barres),
+/// imprimable sur une imprimante classique (ex : Canon TS4550).
+class EtiquettePdf {
+  /// Construit le document PDF pour les [produits] sélectionnés.
+  static Future<Uint8List> construire(List<Produit> produits) async {
+    final doc = pw.Document();
+
+    doc.addPage(
+      pw.MultiPage(
+        pageFormat: PdfPageFormat.a4,
+        margin: const pw.EdgeInsets.all(12),
+        build: (context) {
+          return [
+            pw.Wrap(
+              spacing: 6,
+              runSpacing: 6,
+              children: produits.map(_etiquette).toList(),
+            ),
+          ];
+        },
+      ),
+    );
+
+    return doc.save();
+  }
+
+  static pw.Widget _etiquette(Produit p) {
+    // 3 colonnes sur A4 (~186mm utiles / 3 ≈ 62mm).
+    const largeur = 185.0; // points (~65mm)
+    const hauteur = 110.0; // points (~39mm)
+
+    return pw.Container(
+      width: largeur,
+      height: hauteur,
+      padding: const pw.EdgeInsets.all(8),
+      decoration: pw.BoxDecoration(
+        border: pw.Border.all(color: PdfColors.grey400, width: 0.7),
+        borderRadius: pw.BorderRadius.circular(6),
+      ),
+      child: pw.Column(
+        crossAxisAlignment: pw.CrossAxisAlignment.start,
+        mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+        children: [
+          pw.Text(
+            p.titre,
+            maxLines: 2,
+            overflow: pw.TextOverflow.clip,
+            style: pw.TextStyle(fontSize: 10, fontWeight: pw.FontWeight.bold),
+          ),
+          pw.Container(
+            width: double.infinity,
+            alignment: pw.Alignment.center,
+            child: pw.Column(
+              mainAxisSize: pw.MainAxisSize.min,
+              crossAxisAlignment: pw.CrossAxisAlignment.center,
+              children: [
+                pw.Text(
+                  _prix(p.prix),
+                  style: pw.TextStyle(
+                      fontSize: 22, fontWeight: pw.FontWeight.bold),
+                ),
+                if (p.prixMesure != null)
+                  pw.Text(
+                    _prixMesure(p),
+                    style: const pw.TextStyle(
+                        fontSize: 9, color: PdfColors.grey700),
+                  ),
+              ],
+            ),
+          ),
+          _codeBarres(p.codeBarres),
+        ],
+      ),
+    );
+  }
+
+  static pw.Widget _codeBarres(String? code) {
+    if (code == null || code.isEmpty) {
+      return pw.SizedBox(height: 22);
+    }
+    final estEan13 = code.length == 13 && int.tryParse(code) != null;
+    return pw.BarcodeWidget(
+      barcode: estEan13 ? pw.Barcode.ean13() : pw.Barcode.code128(),
+      data: code,
+      width: 150,
+      height: 26,
+      drawText: true,
+      textStyle: const pw.TextStyle(fontSize: 6),
+    );
+  }
+
+  static String _prix(double v) => '${v.toStringAsFixed(2).replaceAll('.', ',')} EUR';
+
+  static String _prixMesure(Produit p) {
+    final m = p.prixMesure!;
+    final unite = m.suffixe == '/kg' ? 'kg' : 'L';
+    return 'soit ${m.valeur.toStringAsFixed(2).replaceAll('.', ',')} EUR / $unite';
+  }
+}

lib/services/local_db.dart

@@ -0,0 +1,69 @@
+import 'package:sqflite/sqflite.dart';
+
+/// Accès à la base SQLite locale (persistée sur la tablette).
+class LocalDb {
+  LocalDb._();
+  static final LocalDb instance = LocalDb._();
+
+  Database? _db;
+
+  Future<Database> get database async {
+    return _db ??= await _ouvrir();
+  }
+
+  Future<Database> _ouvrir() async {
+    final dir = await getDatabasesPath();
+    final chemin = '$dir/gestion_prix.db';
+    return openDatabase(
+      chemin,
+      version: 6,
+      onCreate: (db, version) async {
+        await _creerTable(db);
+      },
+      onUpgrade: (db, ancienne, nouvelle) async {
+        if (ancienne < 2) {
+          // Ancien schéma (prix HT/TTC) → refonte complète.
+          await db.execute('DROP TABLE IF EXISTS produits');
+          await _creerTable(db);
+        }
+        if (ancienne < 3) {
+          // Ajout quantité + unité pour le prix au kilo/litre.
+          await db.execute('ALTER TABLE produits ADD COLUMN quantite REAL');
+          await db.execute('ALTER TABLE produits ADD COLUMN unite TEXT');
+        }
+        if (ancienne < 4) {
+          // Ajout du nombre de contenants (packs).
+          await db.execute('ALTER TABLE produits ADD COLUMN nb_contenants INTEGER');
+        }
+        if (ancienne < 5) {
+          // Ajout du stock (inventaire).
+          await db.execute(
+              'ALTER TABLE produits ADD COLUMN stock INTEGER NOT NULL DEFAULT 0');
+        }
+        if (ancienne < 6) {
+          // Ajout du prix d'achat (marge).
+          await db.execute(
+              'ALTER TABLE produits ADD COLUMN prix_achat REAL NOT NULL DEFAULT 0');
+        }
+      },
+    );
+  }
+
+  Future<void> _creerTable(Database db) async {
+    await db.execute('''
+      CREATE TABLE produits(
+        id          INTEGER PRIMARY KEY AUTOINCREMENT,
+        code_barres TEXT UNIQUE,
+        nom         TEXT NOT NULL,
+        image_url   TEXT,
+        prix          REAL NOT NULL DEFAULT 0,
+        prix_achat    REAL NOT NULL DEFAULT 0,
+        quantite      REAL,
+        unite         TEXT,
+        nb_contenants INTEGER,
+        stock         INTEGER NOT NULL DEFAULT 0,
+        cree_le       INTEGER NOT NULL DEFAULT 0
+      )
+    ''');
+  }
+}

lib/services/openfoodfacts_service.dart

@@ -0,0 +1,84 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+
+import '../models/produit.dart';
+
+/// Résultat d'une recherche produit sur OpenFoodFacts.
+class InfoProduit {
+  final String? nom;
+  final String? imageUrl;
+  final String? marque;
+  final double? quantite;
+  final String? unite;
+
+  const InfoProduit({
+    this.nom,
+    this.imageUrl,
+    this.marque,
+    this.quantite,
+    this.unite,
+  });
+
+  bool get estVide => (nom == null || nom!.isEmpty) && imageUrl == null;
+}
+
+/// Interroge l'API publique OpenFoodFacts pour récupérer le nom, l'image et la
+/// quantité (grammage / litrage) d'un produit à partir de son code-barres.
+class OpenFoodFactsService {
+  static const String _base = 'https://world.openfoodfacts.org/api/v2/product';
+
+  Future<InfoProduit?> chercherParCodeBarres(String codeBarres) async {
+    final uri = Uri.parse(
+      '$_base/$codeBarres.json?fields=product_name,product_name_fr,brands,'
+      'image_front_url,image_url,product_quantity,product_quantity_unit',
+    );
+
+    try {
+      final res = await http
+          .get(uri, headers: {'User-Agent': 'GestionPrixProduit/1.0'})
+          .timeout(const Duration(seconds: 8));
+
+      if (res.statusCode != 200) return null;
+
+      final data = jsonDecode(res.body) as Map<String, dynamic>;
+      // status == 1 => produit trouvé
+      if (data['status'] != 1) return const InfoProduit();
+
+      final p = data['product'] as Map<String, dynamic>? ?? {};
+      final nom = (p['product_name_fr'] as String?)?.trim();
+      final nomEn = (p['product_name'] as String?)?.trim();
+      final image = (p['image_front_url'] as String?)?.trim() ??
+          (p['image_url'] as String?)?.trim();
+
+      final (quantite, unite) = _quantite(p);
+
+      return InfoProduit(
+        nom: (nom != null && nom.isNotEmpty) ? nom : nomEn,
+        imageUrl: (image != null && image.isNotEmpty) ? image : null,
+        marque: (p['brands'] as String?)?.split(',').first.trim(),
+        quantite: quantite,
+        unite: unite,
+      );
+    } catch (_) {
+      // Pas de réseau ou timeout : on retourne null, l'utilisateur saisit à la main.
+      return null;
+    }
+  }
+
+  /// Normalise la quantité OpenFoodFacts (product_quantity + unité) vers nos unités.
+  (double?, String?) _quantite(Map<String, dynamic> p) {
+    final q = (p['product_quantity'] as num?)?.toDouble();
+    final u = (p['product_quantity_unit'] as String?)?.toLowerCase().trim();
+    if (q == null || q <= 0 || u == null) return (null, null);
+
+    return switch (u) {
+      'g' => (q, Unites.g),
+      'kg' => (q, Unites.kg),
+      'mg' => (q / 1000, Unites.g),
+      'ml' => (q, Unites.ml),
+      'cl' => (q, Unites.cl),
+      'l' => (q, Unites.l),
+      _ => (null, null),
+    };
+  }
+}

lib/services/photo_service.dart

@@ -0,0 +1,33 @@
+import 'dart:io';
+
+import 'package:image_picker/image_picker.dart';
+import 'package:path_provider/path_provider.dart';
+
+/// Prise et stockage local des photos de produits.
+class PhotoService {
+  static final _picker = ImagePicker();
+
+  /// Ouvre l'appareil photo ([ImageSource.camera]) ou la galerie, copie l'image
+  /// choisie dans le stockage de l'app et retourne son chemin local (ou null si annulé).
+  static Future<String?> choisir(ImageSource source) async {
+    final x = await _picker.pickImage(
+      source: source,
+      maxWidth: 1200,
+      imageQuality: 82,
+    );
+    if (x == null) return null;
+
+    final dir = await getApplicationDocumentsDirectory();
+    final dossier = Directory('${dir.path}/photos');
+    if (!await dossier.exists()) await dossier.create(recursive: true);
+
+    final nom = 'produit_${DateTime.now().millisecondsSinceEpoch}.jpg';
+    final dest = '${dossier.path}/$nom';
+    await File(x.path).copy(dest);
+    return dest;
+  }
+
+  /// Vrai si l'url pointe vers un fichier local (photo prise), pas vers le web.
+  static bool estLocale(String? url) =>
+      url != null && url.isNotEmpty && !url.startsWith('http');
+}

lib/services/produit_repository.dart

@@ -0,0 +1,91 @@
+import 'package:flutter/foundation.dart';
+import 'package:sqflite/sqflite.dart';
+
+import '../models/produit.dart';
+import 'local_db.dart';
+
+/// Source de vérité des produits, partagée par tous les écrans.
+/// Persistée localement dans une base SQLite (aucun serveur, fonctionne hors-ligne).
+class ProduitRepository extends ChangeNotifier {
+  ProduitRepository._();
+  static final ProduitRepository instance = ProduitRepository._();
+
+  final List<Produit> _produits = [];
+  bool _charge = false;
+  bool _enCours = false;
+  String? _erreur;
+
+  List<Produit> get produits => List.unmodifiable(_produits);
+  bool get charge => _charge;
+  bool get enCours => _enCours;
+  String? get erreur => _erreur;
+
+  Future<Database> get _db async => LocalDb.instance.database;
+
+  Future<void> charger() async {
+    _enCours = true;
+    _erreur = null;
+    notifyListeners();
+
+    try {
+      final db = await _db;
+      final rows = await db.query('produits', orderBy: 'nom COLLATE NOCASE ASC');
+      _produits
+        ..clear()
+        ..addAll(rows.map(Produit.fromMap));
+      _charge = true;
+    } catch (e) {
+      _erreur = e.toString();
+    } finally {
+      _enCours = false;
+      notifyListeners();
+    }
+  }
+
+  Produit? parCodeBarres(String code) {
+    for (final p in _produits) {
+      if (p.codeBarres == code) return p;
+    }
+    return null;
+  }
+
+  Future<Produit> ajouter(Produit p) async {
+    final db = await _db;
+    final ts = DateTime.now().millisecondsSinceEpoch;
+    final data = p.toInsertMap()..['cree_le'] = ts;
+    final id = await db.insert(
+      'produits',
+      data,
+      conflictAlgorithm: ConflictAlgorithm.replace,
+    );
+    final cree = p.copyWith(id: id.toString(), creeLe: ts);
+    _produits.add(cree);
+    _trier();
+    notifyListeners();
+    return cree;
+  }
+
+  Future<void> modifier(Produit p) async {
+    final db = await _db;
+    await db.update(
+      'produits',
+      p.toInsertMap(),
+      where: 'id = ?',
+      whereArgs: [int.tryParse(p.id) ?? p.id],
+    );
+    final i = _produits.indexWhere((e) => e.id == p.id);
+    if (i != -1) _produits[i] = p;
+    _trier();
+    notifyListeners();
+  }
+
+  Future<void> supprimer(String id) async {
+    final db = await _db;
+    await db.delete('produits', where: 'id = ?', whereArgs: [int.tryParse(id) ?? id]);
+    _produits.removeWhere((e) => e.id == id);
+    notifyListeners();
+  }
+
+  void _trier() => _produits
+      .sort((a, b) => a.nom.toLowerCase().compareTo(b.nom.toLowerCase()));
+}

lib/services/reglages.dart

@@ -0,0 +1,27 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../models/produit.dart';
+
+/// Petits réglages persistés (préférences utilisateur) pour accélérer la saisie.
+class Reglages {
+  Reglages._();
+  static final Reglages instance = Reglages._();
+
+  static const _cleDerniereUnite = 'derniere_unite';
+
+  SharedPreferences? _prefs;
+
+  Future<SharedPreferences> get _p async =>
+      _prefs ??= await SharedPreferences.getInstance();
+
+  /// Dernière unité choisie lors d'un ajout (pour la re-proposer par défaut).
+  Future<String> derniereUnite() async {
+    final p = await _p;
+    return p.getString(_cleDerniereUnite) ?? Unites.g;
+  }
+
+  Future<void> memoriserUnite(String unite) async {
+    final p = await _p;
+    await p.setString(_cleDerniereUnite, unite);
+  }
+}

lib/theme.dart

@@ -0,0 +1,116 @@
+import 'package:flutter/material.dart';
+
+/// Thème noir & blanc épuré, avec une seule couleur d'accent.
+/// Change [accent] pour ajuster la touche de couleur de toute l'app.
+class AppTheme {
+  static const Color accent = Color(0xFF2F6FED); // bleu moderne
+  static const Color noir = Color(0xFF111114);
+  static const Color grisTexte = Color(0xFF6B6B72);
+
+  static ThemeData clair() {
+    final scheme = ColorScheme.fromSeed(
+      seedColor: accent,
+      brightness: Brightness.light,
+    ).copyWith(
+      primary: noir,
+      onPrimary: Colors.white,
+      secondary: accent,
+      surface: Colors.white,
+      onSurface: noir,
+    );
+
+    return _base(scheme, const Color(0xFFF6F6F7));
+  }
+
+  static ThemeData sombre() {
+    final scheme = ColorScheme.fromSeed(
+      seedColor: accent,
+      brightness: Brightness.dark,
+    ).copyWith(
+      primary: Colors.white,
+      onPrimary: noir,
+      secondary: accent,
+    );
+
+    return _base(scheme, const Color(0xFF0E0E11));
+  }
+
+  static ThemeData _base(ColorScheme scheme, Color fond) {
+    final base = ThemeData(
+      useMaterial3: true,
+      colorScheme: scheme,
+      scaffoldBackgroundColor: fond,
+      fontFamily: 'Roboto',
+    );
+
+    return base.copyWith(
+      appBarTheme: AppBarTheme(
+        backgroundColor: fond,
+        foregroundColor: scheme.onSurface,
+        elevation: 0,
+        centerTitle: false,
+        titleTextStyle: TextStyle(
+          color: scheme.onSurface,
+          fontSize: 24,
+          fontWeight: FontWeight.w700,
+          letterSpacing: -0.5,
+        ),
+      ),
+      cardTheme: CardThemeData(
+        elevation: 0,
+        color: scheme.surface,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(16),
+          side: BorderSide(color: scheme.outlineVariant.withValues(alpha: 0.5)),
+        ),
+        margin: EdgeInsets.zero,
+      ),
+      filledButtonTheme: FilledButtonThemeData(
+        style: FilledButton.styleFrom(
+          backgroundColor: scheme.primary,
+          foregroundColor: scheme.onPrimary,
+          minimumSize: const Size.fromHeight(52),
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(14),
+          ),
+          textStyle: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
+        ),
+      ),
+      inputDecorationTheme: InputDecorationTheme(
+        filled: true,
+        fillColor: scheme.surface,
+        border: OutlineInputBorder(
+          borderRadius: BorderRadius.circular(14),
+          borderSide: BorderSide(color: scheme.outlineVariant),
+        ),
+        enabledBorder: OutlineInputBorder(
+          borderRadius: BorderRadius.circular(14),
+          borderSide: BorderSide(color: scheme.outlineVariant),
+        ),
+        focusedBorder: OutlineInputBorder(
+          borderRadius: BorderRadius.circular(14),
+          borderSide: const BorderSide(color: accent, width: 2),
+        ),
+      ),
+      navigationBarTheme: NavigationBarThemeData(
+        backgroundColor: scheme.surface,
+        indicatorColor: accent.withValues(alpha: 0.14),
+        elevation: 0,
+        labelTextStyle: WidgetStateProperty.resolveWith((states) {
+          final selected = states.contains(WidgetState.selected);
+          return TextStyle(
+            fontSize: 12,
+            fontWeight: selected ? FontWeight.w700 : FontWeight.w500,
+            color: selected ? scheme.onSurface : grisTexte,
+          );
+        }),
+        iconTheme: WidgetStateProperty.resolveWith((states) {
+          final selected = states.contains(WidgetState.selected);
+          return IconThemeData(
+            color: selected ? accent : grisTexte,
+          );
+        }),
+      ),
+    );
+  }
+}

lib/utils/format.dart

@@ -0,0 +1,5 @@
+import 'package:intl/intl.dart';
+
+final NumberFormat _euro = NumberFormat.currency(locale: 'fr_FR', symbol: '€');
+
+String euro(double v) => _euro.format(v);

lib/utils/tri.dart

@@ -0,0 +1,41 @@
+import '../models/produit.dart';
+
+/// Critères de tri partagés (page Produits et page Étiquettes).
+enum Tri {
+  recent('Récents'),
+  alpha('A → Z'),
+  prixAsc('Prix ↑'),
+  prixDesc('Prix ↓'),
+  margeDesc('Marge ↓'),
+  margeAsc('Marge ↑');
+
+  const Tri(this.libelle);
+  final String libelle;
+}
+
+/// Retourne une copie triée de [source] selon [tri].
+List<Produit> trierProduits(List<Produit> source, Tri tri) {
+  final list = List<Produit>.of(source);
+  switch (tri) {
+    case Tri.recent:
+      // Plus récemment ajouté en premier (date d'ajout, puis id).
+      list.sort((a, b) {
+        final c = b.creeLe.compareTo(a.creeLe);
+        if (c != 0) return c;
+        return (int.tryParse(b.id) ?? 0).compareTo(int.tryParse(a.id) ?? 0);
+      });
+    case Tri.alpha:
+      list.sort((a, b) => a.nom.toLowerCase().compareTo(b.nom.toLowerCase()));
+    case Tri.prixAsc:
+      list.sort((a, b) => a.prix.compareTo(b.prix));
+    case Tri.prixDesc:
+      list.sort((a, b) => b.prix.compareTo(a.prix));
+    case Tri.margeDesc:
+      list.sort(
+          (a, b) => (b.coefficient ?? -1e18).compareTo(a.coefficient ?? -1e18));
+    case Tri.margeAsc:
+      list.sort(
+          (a, b) => (a.coefficient ?? 1e18).compareTo(b.coefficient ?? 1e18));
+  }
+  return list;
+}

lib/widgets/produit_image.dart

@@ -0,0 +1,62 @@
+import 'dart:io';
+
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+
+import '../services/photo_service.dart';
+
+/// Vignette d'image produit : photo locale, image web (OpenFoodFacts) ou icône par défaut.
+class ProduitImage extends StatelessWidget {
+  final String? url;
+  final double taille;
+  final double radius;
+
+  const ProduitImage({
+    super.key,
+    required this.url,
+    this.taille = 52,
+    this.radius = 12,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(radius),
+      child: Container(
+        width: taille,
+        height: taille,
+        color: scheme.surfaceContainerHighest,
+        child: _contenu(scheme),
+      ),
+    );
+  }
+
+  Widget _contenu(ColorScheme scheme) {
+    if (url == null || url!.isEmpty) {
+      return Icon(Icons.image_outlined,
+          color: scheme.onSurfaceVariant, size: taille * 0.42);
+    }
+    if (PhotoService.estLocale(url)) {
+      return Image.file(
+        File(url!),
+        fit: BoxFit.cover,
+        errorBuilder: (_, _, _) => Icon(Icons.broken_image_outlined,
+            color: scheme.onSurfaceVariant, size: taille * 0.42),
+      );
+    }
+    return CachedNetworkImage(
+      imageUrl: url!,
+      fit: BoxFit.cover,
+      placeholder: (_, _) => const Center(
+        child: SizedBox(
+          width: 18,
+          height: 18,
+          child: CircularProgressIndicator(strokeWidth: 2),
+        ),
+      ),
+      errorWidget: (_, _, _) => Icon(Icons.broken_image_outlined,
+          color: scheme.onSurfaceVariant, size: taille * 0.42),
+    );
+  }
+}

pubspec.lock

@@ -0,0 +1,866 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      sha256: a96e8b390886ee8abb49b7bd3ac8df6f451c621619f52a26e815fdcf568959ff
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.9"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: e2eb0491ba5ddb6177742d2da23904574082139b07c1e33b8503b9f46f3e1a37
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.13.1"
+  barcode:
+    dependency: transitive
+    description:
+      name: barcode
+      sha256: "7b6729c37e3b7f34233e2318d866e8c48ddb46c1f7ad01ff7bb2a8de1da2b9f4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.9"
+  bidi:
+    dependency: transitive
+    description:
+      name: bidi
+      sha256: "77f475165e94b261745cf1032c751e2032b8ed92ccb2bf5716036db79320637d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.13"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "8aab1771e1243a5063b8b0ff68042d67334e3feab9e95b9490f9a6ebf73b42ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  cached_network_image:
+    dependency: "direct main"
+    description:
+      name: cached_network_image
+      sha256: "7c1183e361e5c8b0a0f21a28401eecdbde252441106a9816400dd4c2b2424916"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.1"
+  cached_network_image_platform_interface:
+    dependency: transitive
+    description:
+      name: cached_network_image_platform_interface
+      sha256: "35814b016e37fbdc91f7ae18c8caf49ba5c88501813f73ce8a07027a395e2829"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.1"
+  cached_network_image_web:
+    dependency: transitive
+    description:
+      name: cached_network_image_web
+      sha256: "980842f4e8e2535b8dbd3d5ca0b1f0ba66bf61d14cc3a17a9b4788a3685ba062"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.1"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      sha256: "959525d3162f249993882720d52b7e0c833978df229be20702b33d48d91de70f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.4"
+  cli_util:
+    dependency: transitive
+    description:
+      name: cli_util
+      sha256: ff6785f7e9e3c38ac98b2fb035701789de90154024a75b6cb926445e83197d1c
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.4.2"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      sha256: fddb70d9b5277016c77a80201021d40a2247104d9f4aa7bab7157b7e3f05b84b
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.2"
+  code_assets:
+    dependency: transitive
+    description:
+      name: code_assets
+      sha256: bf394f466ba9205f1812a0433b392d6af280f155f56651eda7c18cc32ed493b8
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.19.1"
+  cross_file:
+    dependency: transitive
+    description:
+      name: cross_file
+      sha256: "92c9c43c383bfa1c32079d3bc492d55d6d4318044b7b47edaff8971cbb555c51"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.5+4"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.7"
+  cupertino_icons:
+    dependency: "direct main"
+    description:
+      name: cupertino_icons
+      sha256: "41e005c33bd814be4d3096aff55b1908d419fde52ca656c8c47719ec745873cd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.9"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.3"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: "6d7fd89431262d8f3125e81b50d3847a091d846eafcd4fdb88dd06f36d705a45"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: a3b4f84adafef897088c160faf7dfffb7696046cb13ae90b508c2cbc95d3b8d4
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  file_selector_linux:
+    dependency: transitive
+    description:
+      name: file_selector_linux
+      sha256: "2567f398e06ac72dcf2e98a0c95df2a9edd03c2c2e0cacd4780f20cdf56263a0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4"
+  file_selector_macos:
+    dependency: transitive
+    description:
+      name: file_selector_macos
+      sha256: "5e0bbe9c312416f1787a68259ea1505b52f258c587f12920422671807c4d618a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.5"
+  file_selector_platform_interface:
+    dependency: transitive
+    description:
+      name: file_selector_platform_interface
+      sha256: "35e0bd61ebcdb91a3505813b055b09b79dfdc7d0aee9c09a7ba59ae4bb13dc85"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  file_selector_windows:
+    dependency: transitive
+    description:
+      name: file_selector_windows
+      sha256: "62197474ae75893a62df75939c777763d39c2bc5f73ce5b88497208bc269abfd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.3+5"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: b6dc7065e46c974bc7c5f143080a6764ec7a4be6da1285ececdc37be96de53be
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  flutter:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_cache_manager:
+    dependency: transitive
+    description:
+      name: flutter_cache_manager
+      sha256: "400b6592f16a4409a7f2bb929a9a7e38c72cceb8ffb99ee57bbf2cb2cecf8386"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.1"
+  flutter_launcher_icons:
+    dependency: "direct dev"
+    description:
+      name: flutter_launcher_icons
+      sha256: "10f13781741a2e3972126fae08393d3c4e01fa4cd7473326b94b72cf594195e7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.14.4"
+  flutter_lints:
+    dependency: "direct dev"
+    description:
+      name: flutter_lints
+      sha256: "3105dc8492f6183fb076ccf1f351ac3d60564bff92e20bfc4af9cc1651f4e7e1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.0"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      sha256: "3854fe5e3bff0b113c658f260b90c95dea17c92db0f2addeac2e343dd9969785"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.35"
+  flutter_test:
+    dependency: "direct dev"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  hooks:
+    dependency: transitive
+    description:
+      name: hooks
+      sha256: "9a62a50b50b769a737bc0a8ff381f333529df3ab746b2f6b02e83760231455ba"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  http:
+    dependency: "direct main"
+    description:
+      name: http
+      sha256: "87721a4a50b19c7f1d49001e51409bddc46303966ce89a65af4f4e6004896412"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.0"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      sha256: "6300175e00616bbc832e2fc91bfa4d776af5402c81c7151bee6905bb08473c52"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.9.1"
+  image_picker:
+    dependency: "direct main"
+    description:
+      name: image_picker
+      sha256: d8402284df184bc05f4a2210c6c23983b0720f4cd87cbd05c5390a78af602667
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.3"
+  image_picker_android:
+    dependency: transitive
+    description:
+      name: image_picker_android
+      sha256: "6f3a1995eafb000333174fae92202622033b0ee7fd917a6cd3730295264df84a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.13+19"
+  image_picker_for_web:
+    dependency: transitive
+    description:
+      name: image_picker_for_web
+      sha256: "66257a3191ab360d23a55c8241c91a6e329d31e94efa7be9cf7a212e65850214"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.1"
+  image_picker_ios:
+    dependency: transitive
+    description:
+      name: image_picker_ios
+      sha256: b9c4a438a9ff4f60808c9cf0039b93a42bb6c2211ef6ebb647394b2b3fa84588
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.13+6"
+  image_picker_linux:
+    dependency: transitive
+    description:
+      name: image_picker_linux
+      sha256: "1f81c5f2046b9ab724f85523e4af65be1d47b038160a8c8deed909762c308ed4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
+  image_picker_macos:
+    dependency: transitive
+    description:
+      name: image_picker_macos
+      sha256: "86f0f15a309de7e1a552c12df9ce5b59fe927e71385329355aec4776c6a8ec91"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2+1"
+  image_picker_platform_interface:
+    dependency: transitive
+    description:
+      name: image_picker_platform_interface
+      sha256: "567e056716333a1647c64bb6bd873cff7622233a5c3f694be28a583d4715690c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.11.1"
+  image_picker_windows:
+    dependency: transitive
+    description:
+      name: image_picker_windows
+      sha256: d248c86554a72b5495a31c56f060cf73a41c7ff541689327b1a7dbccc33adfae
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
+  intl:
+    dependency: "direct main"
+    description:
+      name: intl
+      sha256: "1ca20c894b1717686a2319b8548763d812bc0aabdac580420a44c5178c57a867"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.20.3"
+  jni:
+    dependency: transitive
+    description:
+      name: jni
+      sha256: c2230682d5bc2362c1c9e8d3c7f406d9cbba23ab3f2e203a025dd47e0fb2e68f
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  jni_flutter:
+    dependency: transitive
+    description:
+      name: jni_flutter
+      sha256: "8b59e590786050b1cd866677dddaf76b1ade5e7bc751abe04b86e84d379d3ba6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.1"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      sha256: "2a743920d81b7910627f68ee2c9ac1fc0bfee32b9fc3403587d7c6791ca12f80"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.12.0"
+  leak_tracker:
+    dependency: transitive
+    description:
+      name: leak_tracker
+      sha256: "33e2e26bdd85a0112ec15400c8cbffea70d0f9c3407491f672a2fad47915e2de"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.0.2"
+  leak_tracker_flutter_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_flutter_testing
+      sha256: "1dbc140bb5a23c75ea9c4811222756104fbcd1a27173f0c34ca01e16bea473c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.10"
+  leak_tracker_testing:
+    dependency: transitive
+    description:
+      name: leak_tracker_testing
+      sha256: "8d5a2d49f4a66b49744b23b018848400d23e54caf9463f4eb20df3eb8acb2eb1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  lints:
+    dependency: transitive
+    description:
+      name: lints
+      sha256: "12f842a479589fea194fe5c5a3095abc7be0c1f2ddfa9a0e76aed1dbd26a87df"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.1.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: dc0b7dc7651697ea4ff3e69ef44b0407ea32c487a39fff6a4004fa585e901861
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.12.19"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      sha256: "9c337007e82b1889149c82ed242ed1cb24a66044e30979c44912381e9be4c48b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.13.0"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: "1741988757a65eb6b36abe716829688cf01910bbf91c34354ff7ec1c3de2b349"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.18.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: "41a20518f0cb1256669420fdba0cd90d21561e560ac240f26ef8322e45bb7ed6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.0"
+  mobile_scanner:
+    dependency: "direct main"
+    description:
+      name: mobile_scanner
+      sha256: c92c26bf2231695b6d3477c8dcf435f51e28f87b1745966b1fe4c47a286171ce
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.2.0"
+  objective_c:
+    dependency: transitive
+    description:
+      name: objective_c
+      sha256: "6cb691c686fa2838c6deb34980d426145c2a5d537491cb83d463c33cdbc726ed"
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.4.1"
+  octo_image:
+    dependency: transitive
+    description:
+      name: octo_image
+      sha256: "34faa6639a78c7e3cbe79be6f9f96535867e879748ade7d17c9b1ae7536293bd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: f096c55ebb7deb7e384101542bfba8c52696c1b56fca2eb62827989ef2353bbc
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.1"
+  path_parsing:
+    dependency: transitive
+    description:
+      name: path_parsing
+      sha256: "883402936929eac138ee0a45da5b0f2c80f89913e6dc3bf77eb65b84b409c6ca"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  path_provider:
+    dependency: "direct main"
+    description:
+      name: path_provider
+      sha256: a7f4874f987173da295a61c181b8ee71dab59b332a486b391babf26a1b884825
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.6"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: "69cbd515a62b94d32a7944f086b2f82b4ac40a1d45bebfc00813a430ab2dabcd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.1"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "2a376b7d6392d80cd3705782d2caa734ca4727776db0b6ec36ef3f1855197699"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.6.0"
+  path_provider_linux:
+    dependency: transitive
+    description:
+      name: path_provider_linux
+      sha256: "58c2005f147315b11e9b4a7bc889cd5203e250cba8e3f012dae259b4972b5c16"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.2"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      sha256: "484838772624c3a4b94f1e44a3e19897fee738f2d5c4ce448443b0417f7c9dda"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.3"
+  path_provider_windows:
+    dependency: transitive
+    description:
+      name: path_provider_windows
+      sha256: bd6f00dbd873bfb70d0761682da2b3a2c2fccc2b9e84c495821639601d81afe7
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
+  pdf:
+    dependency: "direct main"
+    description:
+      name: pdf
+      sha256: "517df47af468734a23c8b513c0c6a8a62357403ab1b8ab7fad1606576a9dbdd0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.13.0"
+  pdf_widget_wrapper:
+    dependency: transitive
+    description:
+      name: pdf_widget_wrapper
+      sha256: c930860d987213a3d58c7ec3b7ecf8085c3897f773e8dc23da9cae60a5d6d0f5
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      sha256: "91bd59303e9f769f108f8df05e371341b15d59e995e6806aefab827b58336675"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.2"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      sha256: "5d6b1b0036a5f331ebc77c850ebc8506cbc1e9416c27e59b439f917a902a4984"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.6"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      sha256: "4820fbfdb9478b1ebae27888254d445073732dae3d6ea81f0b7e06d5dedc3f02"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.8"
+  posix:
+    dependency: transitive
+    description:
+      name: posix
+      sha256: "185ef7606574f789b40f289c233efa52e96dead518aed988e040a10737febb07"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.5.0"
+  printing:
+    dependency: "direct main"
+    description:
+      name: printing
+      sha256: f6cd14c768c1352dd37a958a3ee351aa9ce305b398218d3acd86389d5f7ecad1
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.15.0"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "5bfcf68ca79ef689f8990d1160781b4bad40a3bd5e5218ad4076ddb7f4081585"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  qr:
+    dependency: transitive
+    description:
+      name: qr
+      sha256: "5a1d2586170e172b8a8c8470bbbffd5eb0cd38a66c0d77155ea138d3af3a4445"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  record_use:
+    dependency: transitive
+    description:
+      name: record_use
+      sha256: "2551bd8eecfe95d14ae75f6021ad0248be5c27f138c2ec12fcb52b500b3ba1ed"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.0"
+  rxdart:
+    dependency: transitive
+    description:
+      name: rxdart
+      sha256: "5c3004a4a8dbb94bd4bf5412a4def4acdaa12e12f269737a5751369e12d1a962"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.28.0"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      sha256: c3025c5534b01739267eb7d76959bbc25a6d10f6988e1c2a3036940133dd10bf
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.5"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      sha256: "93ae5884a9df5d3bb696825bceb3a17590754548b5d740eba51500afc8d088f5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.26"
+  shared_preferences_foundation:
+    dependency: transitive
+    description:
+      name: shared_preferences_foundation
+      sha256: "4e7eaffc2b17ba398759f1151415869a34771ba11ebbccd1b0145472a619a64f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.6"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      sha256: "580abfd40f415611503cae30adf626e6656dfb2f0cee8f465ece7b6defb40f2f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      sha256: "649dc798a33931919ea356c4305c2d1f81619ea6e92244070b520187b5140ef9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.2"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      sha256: c49bd060261c9a3f0ff445892695d6212ff603ef3115edbb448509d407600019
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      sha256: "94ef0f72b2d71bc3e700e025db3710911bd51a71cefb65cc609dd0d9a982e3c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "56a02f1f4cd1a2d96303c0144c93bd6d909eea6bee6bf5a0e0b685edbd4c47ab"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.2"
+  sqflite:
+    dependency: "direct main"
+    description:
+      name: sqflite
+      sha256: "58a799e6ac17dd32fbab93813d39ed835a75ccc0f8f85b8955fe318c6712b082"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3"
+  sqflite_android:
+    dependency: transitive
+    description:
+      name: sqflite_android
+      sha256: d0548f9d7422a2dae99ec6f8b0a3074463b132d216fa5ba0d230eeefc901983b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3"
+  sqflite_common:
+    dependency: transitive
+    description:
+      name: sqflite_common
+      sha256: "5bf6a55c166e73bf651ba7ec3ed486e577620e3dc8f3a9c6a258a8031b624590"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.11"
+  sqflite_darwin:
+    dependency: transitive
+    description:
+      name: sqflite_darwin
+      sha256: c86ca18b8f666bbf903924687fe21cc16fc385d086005067e26619ca530bef9f
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3+1"
+  sqflite_platform_interface:
+    dependency: transitive
+    description:
+      name: sqflite_platform_interface
+      sha256: f84939f84350d92d04416f8bc4dc52d3896aec7716cc9e80cf0146342139dc50
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "8b27215b45d22309b5cddda1aa2b19bdfec9df0e765f2de506401c071d38d1b1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.12.1"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: "969e04c80b8bcdf826f8f16579c7b14d780458bd97f56d107d3950fdbeef059d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "921cd31725b72fe181906c6a94d987c78e3b98c2e205b397ea399d4054872b43"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  synchronized:
+    dependency: transitive
+    description:
+      name: synchronized
+      sha256: "93b153dcb6a26dcddee6ca087dd634b53e38c10b5aa163e8e49501a776456153"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.1"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: "7f554798625ea768a7518313e58f83891c7f5024f88e46e7182a4558850a4b8e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.2"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: "949a932224383300f01be9221c39180316445ecb8e7547f70a41a35bf421fb9e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.11"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      sha256: "1fef9e8e11e2991bb773070d4656b7bd5d850967a2456cfc83cf47925ba79489"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.5.3"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      sha256: d530bd74fea330e6e364cda7a85019c434070188383e1cd8d9777ee586914c5b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      sha256: "0016aef94fc66495ac78af5859181e3f3bf2026bd8eecc72b9565601e19ab360"
+      url: "https://pub.dev"
+    source: hosted
+    version: "15.2.0"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  xdg_directories:
+    dependency: transitive
+    description:
+      name: xdg_directories
+      sha256: "7a3f37b05d989967cdddcbb571f1ea834867ae2faa29725fd085180e0883aa15"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      sha256: "67f0aff7be013d107995e9b75bf4e7f2c3ef2dfdb2c8e68024bba0a7fd5756a4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.1"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.3"
+sdks:
+  dart: ">=3.12.2 <4.0.0"
+  flutter: ">=3.44.0"

pubspec.yaml

@@ -0,0 +1,108 @@
+name: gestion_prix_produit
+description: "A new Flutter project."
+# The following line prevents the package from being accidentally published to
+# pub.dev using `flutter pub publish`. This is preferred for private packages.
+publish_to: 'none' # Remove this line if you wish to publish to pub.dev
+
+# The following defines the version and build number for your application.
+# A version number is three numbers separated by dots, like 1.2.43
+# followed by an optional build number separated by a +.
+# Both the version and the builder number may be overridden in flutter
+# build by specifying --build-name and --build-number, respectively.
+# In Android, build-name is used as versionName while build-number used as versionCode.
+# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
+# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
+# Read more about iOS versioning at
+# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
+# In Windows, build-name is used as the major, minor, and patch parts
+# of the product and file versions while build-number is used as the build suffix.
+version: 1.0.0+1
+
+environment:
+  sdk: ^3.12.2
+
+# Dependencies specify other packages that your package needs in order to work.
+# To automatically upgrade your package dependencies to the latest versions
+# consider running `flutter pub upgrade --major-versions`. Alternatively,
+# dependencies can be manually updated by changing the version numbers below to
+# the latest version available on pub.dev. To see which dependencies have newer
+# versions available, run `flutter pub outdated`.
+dependencies:
+  flutter:
+    sdk: flutter
+
+  # The following adds the Cupertino Icons font to your application.
+  # Use with the CupertinoIcons class for iOS style icons.
+  cupertino_icons: ^1.0.8
+  mobile_scanner: ^7.2.0
+  http: ^1.6.0
+  pdf: ^3.13.0
+  printing: ^5.15.0
+  cached_network_image: ^3.4.1
+  intl: ^0.20.3
+  sqflite: ^2.4.3
+  shared_preferences: ^2.5.5
+  image_picker: ^1.2.3
+  path_provider: ^2.1.6
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+  # The "flutter_lints" package below contains a set of recommended lints to
+  # encourage good coding practices. The lint set provided by the package is
+  # activated in the `analysis_options.yaml` file located at the root of your
+  # package. See that file for information about deactivating specific lint
+  # rules and activating additional ones.
+  flutter_lints: ^6.0.0
+  flutter_launcher_icons: ^0.14.4
+
+flutter_launcher_icons:
+  android: true
+  ios: false
+  image_path: "assets/icon/icon.png"
+  adaptive_icon_background: "#14141A"
+  adaptive_icon_foreground: "assets/icon/icon_foreground.png"
+  min_sdk_android: 21
+
+# For information on the generic Dart part of this file, see the
+# following page: https://dart.dev/tools/pub/pubspec
+
+# The following section is specific to Flutter packages.
+flutter:
+
+  # The following line ensures that the Material Icons font is
+  # included with your application, so that you can use the icons in
+  # the material Icons class.
+  uses-material-design: true
+
+  # To add assets to your application, add an assets section, like this:
+  # assets:
+  #   - images/a_dot_burr.jpeg
+  #   - images/a_dot_ham.jpeg
+
+  # An image asset can refer to one or more resolution-specific "variants", see
+  # https://flutter.dev/to/resolution-aware-images
+
+  # For details regarding adding assets from package dependencies, see
+  # https://flutter.dev/to/asset-from-package
+
+  # To add custom fonts to your application, add a fonts section here,
+  # in this "flutter" section. Each entry in this list should have a
+  # "family" key with the font family name, and a "fonts" key with a
+  # list giving the asset and other descriptors for the font. For
+  # example:
+  # fonts:
+  #   - family: Schyler
+  #     fonts:
+  #       - asset: fonts/Schyler-Regular.ttf
+  #       - asset: fonts/Schyler-Italic.ttf
+  #         style: italic
+  #   - family: Trajan Pro
+  #     fonts:
+  #       - asset: fonts/TrajanPro.ttf
+  #       - asset: fonts/TrajanPro_Bold.ttf
+  #         weight: 700
+  #
+  # For details regarding fonts from package dependencies,
+  # see https://flutter.dev/to/font-from-package

test/widget_test.dart

@@ -0,0 +1,18 @@
+// Test de fumée : l'app démarre et affiche la barre de navigation.
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:gestion_prix_produit/main.dart';
+
+void main() {
+  testWidgets('L\'app démarre avec les 3 onglets', (WidgetTester tester) async {
+    await tester.pumpWidget(const MonApp());
+    await tester.pump();
+
+    expect(find.text('Produits'), findsWidgets);
+    expect(find.text('Scanner'), findsOneWidget);
+    expect(find.text('Étiquettes'), findsWidgets);
+    expect(find.byType(NavigationBar), findsOneWidget);
+  });
+}