price per item is printed

.gitignore

@@ -46,3 +46,5 @@ app.*.map.json
 
 # Widget Preview related
 .widget_preview/
+# Exclusive lock used by scripts/build_release.ps1.
+.release-build.lock

README.md

@@ -2,6 +2,42 @@
 
 A new Flutter project.
 
+## Kleine Fenster
+
+Windows und Linux verwenden eine minimale Inhaltsgröße von 320 × 480 logischen
+Pixeln (ohne Fensterrahmen). In schmalen Ansichten stehen die Hauptbereiche
+untereinander. Unter 320 Pixeln Browserbreite lässt sich die App horizontal
+scrollen; die Seite und Formulareingaben bleiben beim Verkleinern erhalten.
+
+## Release-Builds mit automatischer Versionierung
+
+Im Projektordner mit PowerShell ausführen:
+
+```powershell
+.\build_release.cmd
+```
+
+Erstellt standardmäßig eine Android-APK unter
+`build/app/outputs/flutter-apk/app-release.apk`. Vor dem Build werden Patchversion
+und Buildnummer erhöht, z. B. `1.0.0+1` → `1.0.1+2`. Ein erfolgreicher Build behält
+diese Version in `pubspec.yaml`; bei einem Fehler wird die bisherige Version
+wiederhergestellt. Die installierte Version und Buildnummer stehen im Hamburger-Menü.
+
+Weitere Ziele und zusätzliche Flutter-Argumente:
+
+```powershell
+.\build_release.cmd -Target windows
+.\build_release.cmd -Target appbundle
+.\build_release.cmd -FlutterArguments --split-per-abi
+```
+
+Für automatische Versionierung immer dieses Skript verwenden. Direkte Aufrufe
+von `flutter build` und Debug-Builds erhöhen die Version nicht. Änderungen an
+`pubspec.yaml` und gegebenenfalls `pubspec.lock` nach dem Release ins Repository übernehmen.
+
+Der CMD-Starter erlaubt PowerShell-Skripte nur für diesen einen Prozess; die
+systemweite Ausführungsrichtlinie bleibt unverändert.
+
 ## Getting Started
 
 This project is a starting point for a Flutter application.

build_release.cmd

@@ -0,0 +1,3 @@
+@echo off
+powershell.exe -NoProfile -ExecutionPolicy Bypass -File "%~dp0scripts\build_release.ps1" %*
+exit /b %errorlevel%

lib/controller/anwendung_controller.dart

@@ -77,6 +77,9 @@ class AnwendungController extends GetxController {
         entry.toJson(),
       ]);
       anwendungen.assignAll([entry]);
+      if (Get.isRegistered<HomeController>()) {
+        Get.find<HomeController>().loadProfile();
+      }
       hasError.value = false;
       message.value = 'Verarbeitungsprofil gespeichert.';
     } catch (_) {

lib/controller/bauteil_controller.dart

@@ -31,6 +31,7 @@ class BauteilController extends GetxController {
   final minutenController = TextEditingController(text: '0');
   final gewichtController = TextEditingController();
   final abfallController = TextEditingController(text: '0');
+  final gesamtpreisController = TextEditingController();
   final _verbrauchControllers = <String, TextEditingController>{};
   final filamente = <KaufFilamentModel>[].obs;
   final profile = <AnwendungModel>[].obs;
@@ -224,6 +225,7 @@ class BauteilController extends GetxController {
         druckdauerMinuten: duration,
         gewichtGramm: InputValidators.number(gewichtController.text)!,
         abfallGramm: InputValidators.number(abfallController.text)!,
+        gesamtpreis: InputValidators.number(gesamtpreisController.text),
         fotoBase64: foto.value == null ? null : base64Encode(foto.value!),
         filamente: selectedFilamente.entries
             .map(
@@ -268,6 +270,8 @@ class BauteilController extends GetxController {
     minutenController.text = '${entry.druckdauerMinuten % 60}';
     gewichtController.text = DisplayFormats.number(entry.gewichtGramm);
     abfallController.text = DisplayFormats.number(entry.abfallGramm);
+    gesamtpreisController.text =
+        entry.gesamtpreis?.toString().replaceAll('.', ',') ?? '';
     foto.value = entry.fotoBytes;
     for (final item in entry.filamente) {
       verbrauchController(item.filamentId).text = item.verbrauchGramm > 0
@@ -342,6 +346,7 @@ class BauteilController extends GetxController {
     minutenController.text = '0';
     gewichtController.clear();
     abfallController.text = '0';
+    gesamtpreisController.clear();
     selectedFilamente.clear();
     for (final controller in _verbrauchControllers.values) {
       controller.clear();
@@ -359,6 +364,7 @@ class BauteilController extends GetxController {
     minutenController.dispose();
     gewichtController.dispose();
     abfallController.dispose();
+    gesamtpreisController.dispose();
     for (final controller in _verbrauchControllers.values) {
       controller.dispose();
     }

lib/controller/home_controller.dart

@@ -4,6 +4,7 @@ import 'package:uuid/uuid.dart';
 
 import '../models/kauf_filament_model.dart';
 import '../models/bauteil_model.dart';
+import '../models/anwendung_model.dart';
 import '../helper/storage_keys.dart';
 import '../helper/filament_bestand.dart';
 import '../helper/display_formats.dart';
@@ -18,6 +19,16 @@ class HomeController extends GetxController {
 
   final filamente = <KaufFilamentModel>[].obs;
   final verbrauch = <String, double>{}.obs;
+  final filamentIdsMitProfil = <String>{}.obs;
+
+  void loadProfile() {
+    filamentIdsMitProfil.assignAll(
+      storage
+          .getModelList(StorageKeys.anwendungen)
+          .map(AnwendungModel.fromJson)
+          .map((profile) => profile.filamentId),
+    );
+  }
 
   void loadVerbrauch() {
     verbrauch.assignAll(
@@ -133,6 +144,7 @@ class HomeController extends GetxController {
 
   void loadFilamente() {
     loadVerbrauch();
+    loadProfile();
     final data = storage.getModelList(storageKey);
 
     filamente.assignAll(data.map(KaufFilamentModel.fromJson));

lib/helper/display_formats.dart

@@ -1,6 +1,8 @@
 import 'package:intl/intl.dart';
 
 class DisplayFormats {
+  static String currency(num value) =>
+      NumberFormat.currency(locale: 'de_AT', symbol: '€').format(value);
   static String number(num value) =>
       NumberFormat('0.##', 'de_AT').format(value);
   static String date(DateTime value) =>

lib/main.dart

@@ -9,6 +9,7 @@ import 'package:get_storage/get_storage.dart';
 
 import 'services/get_storage_services.dart';
 import 'theme/app_theme.dart';
+import 'widgets/responsive_viewport.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -26,6 +27,8 @@ class MyApp extends StatelessWidget {
       title: 'Flutter Filament Verwaltung',
       debugShowCheckedModeBanner: false,
       theme: AppTheme.light,
+      builder: (context, child) =>
+          ResponsiveViewport(child: child ?? const SizedBox.shrink()),
       initialBinding: SampleBindings(),
       initialRoute: HomeView.routeName,
       getPages: SampleRouts.samplePages,

lib/models/backup_model.dart

@@ -71,6 +71,7 @@ class BackupModel {
             item.druckdauerMinuten <= 0 ||
             !_positive(item.gewichtGramm) ||
             !_nonNegative(item.abfallGramm) ||
+            (item.gesamtpreis != null && !_nonNegative(item.gesamtpreis!)) ||
             item.filamente.isEmpty ||
             item.filamente.any(
               (entry) =>

lib/models/bauteil_model.dart

@@ -34,6 +34,7 @@ class BauteilModel {
   final int druckdauerMinuten;
   final double gewichtGramm;
   final double abfallGramm;
+  final double? gesamtpreis;
   final List<BauteilFilamentModel> filamente;
   final String? fotoBase64;
 
@@ -46,6 +47,7 @@ class BauteilModel {
     required this.gewichtGramm,
     required this.abfallGramm,
     required this.filamente,
+    this.gesamtpreis,
     this.fotoBase64,
   });
 
@@ -71,6 +73,7 @@ class BauteilModel {
     druckdauerMinuten: druckdauerMinuten,
     gewichtGramm: gewichtGramm,
     abfallGramm: abfallGramm,
+    gesamtpreis: gesamtpreis,
     filamente: filamente,
     fotoBase64: fotoBase64,
   );
@@ -83,6 +86,7 @@ class BauteilModel {
     'druckdauerMinuten': druckdauerMinuten,
     'gewichtGramm': gewichtGramm,
     'abfallGramm': abfallGramm,
+    'gesamtpreis': gesamtpreis,
     'filamente': filamente.map((item) => item.toJson()).toList(),
     'fotoBase64': fotoBase64,
   };
@@ -95,6 +99,7 @@ class BauteilModel {
     druckdauerMinuten: json['druckdauerMinuten'] as int,
     gewichtGramm: (json['gewichtGramm'] as num).toDouble(),
     abfallGramm: (json['abfallGramm'] as num).toDouble(),
+    gesamtpreis: (json['gesamtpreis'] as num?)?.toDouble(),
     fotoBase64: json['fotoBase64'] as String?,
     filamente: (json['filamente'] as List)
         .map(

lib/pages/home_view.dart

@@ -6,6 +6,7 @@ import '../models/kauf_filament_model.dart';
 import '../theme/app_theme.dart';
 import '../widgets/filament_form.dart';
 import '../widgets/filament_inventory.dart';
+import '../widgets/app_version.dart';
 import 'anwendung_view.dart';
 import 'bauteil_view.dart';
 import 'export_view.dart';
@@ -27,17 +28,27 @@ class HomeView extends GetView<HomeController> {
           ),
           const SizedBox(width: 8),
         ],
-        title: const Row(
+        title: LayoutBuilder(
-          children: [
+          builder: (context, constraints) => Row(
-            Icon(Icons.all_inbox_rounded, color: AppTheme.teal, size: 28),
+            children: [
-            SizedBox(width: 12),
+              if (constraints.maxWidth >= 260) ...[
-            Flexible(
+                const Icon(
-              child: Text(
+                  Icons.all_inbox_rounded,
-                'Filamentverwaltung',
+                  color: AppTheme.teal,
-                style: TextStyle(fontSize: 21, fontWeight: FontWeight.w700),
+                  size: 28,
+                ),
+                const SizedBox(width: 12),
+              ],
+              const Flexible(
+                child: Text(
+                  'Filamentverwaltung',
+                  maxLines: 2,
+                  overflow: TextOverflow.ellipsis,
+                  style: TextStyle(fontSize: 21, fontWeight: FontWeight.w700),
+                ),
               ),
-            ),
+            ],
-          ],
+          ),
         ),
       ),
       drawer: Drawer(
@@ -46,6 +57,8 @@ class HomeView extends GetView<HomeController> {
             padding: const EdgeInsets.all(16),
             children: [
               const ListTile(title: Text('Filamentverwaltung')),
+              const AppVersion(),
+              const Divider(),
               ListTile(
                 leading: const Icon(Icons.import_export),
                 title: const Text('Daten exportieren / importieren'),

lib/widgets/app_version.dart

@@ -0,0 +1,30 @@
+import 'package:flutter/material.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+
+class AppVersion extends StatefulWidget {
+  const AppVersion({super.key});
+
+  @override
+  State<AppVersion> createState() => _AppVersionState();
+}
+
+class _AppVersionState extends State<AppVersion> {
+  late final Future<PackageInfo> _info = PackageInfo.fromPlatform();
+
+  @override
+  Widget build(BuildContext context) => FutureBuilder<PackageInfo>(
+    future: _info,
+    builder: (context, snapshot) {
+      final info = snapshot.data;
+      return ListTile(
+        leading: const Icon(Icons.info_outline),
+        title: Text(info == null ? 'Version' : 'Version ${info.version}'),
+        subtitle: Text(
+          info == null
+              ? (snapshot.hasError ? 'Nicht verfügbar' : 'Wird geladen …')
+              : 'Build ${info.buildNumber}',
+        ),
+      );
+    },
+  );
+}

lib/widgets/bauteil_card.dart

@@ -102,6 +102,10 @@ class BauteilCard extends StatelessWidget {
             runSpacing: 8,
             children: [
               _detail(DisplayFormats.duration(bauteil.druckdauerMinuten)),
+              if (bauteil.gesamtpreis != null)
+                _detail(
+                  'Gesamtpreis ${DisplayFormats.currency(bauteil.gesamtpreis!)}',
+                ),
               _detail(
                 'Bauteil ${DisplayFormats.number(bauteil.gewichtGramm)} g',
               ),

lib/widgets/bauteil_form.dart

@@ -64,6 +64,13 @@ class BauteilForm extends StatelessWidget {
                   unit: 'g',
                   validator: InputValidators.nonNegative,
                 ),
+                EntryNumberField(
+                  controller: controller.gesamtpreisController,
+                  label: 'Gesamtpreis (optional)',
+                  unit: '€',
+                  validator: (value) =>
+                      InputValidators.nonNegative(value, optional: true),
+                ),
               ],
             ),
             const SizedBox(height: 24),

lib/widgets/bauteil_photo_picker.dart

@@ -9,51 +9,58 @@ class BauteilPhotoPicker extends StatelessWidget {
   final BauteilController controller;
 
   @override
-  Widget build(BuildContext context) => Obx(
+  Widget build(BuildContext context) => LayoutBuilder(
-    () => Row(
+    builder: (context, constraints) => Obx(() {
-      crossAxisAlignment: CrossAxisAlignment.start,
+      final photo = BauteilPhoto(bytes: controller.foto.value);
-      children: [
+      final controls = Column(
-        BauteilPhoto(bytes: controller.foto.value),
+        crossAxisAlignment: CrossAxisAlignment.start,
-        const SizedBox(width: 16),
+        children: [
-        Expanded(
+          const Text(
-          child: Column(
+            'Bauteilfoto (optional)',
-            crossAxisAlignment: CrossAxisAlignment.start,
+            style: TextStyle(fontWeight: FontWeight.w600),
+          ),
+          const SizedBox(height: 8),
+          Wrap(
+            spacing: 8,
+            runSpacing: 8,
             children: [
-              const Text(
+              OutlinedButton.icon(
-                'Bauteilfoto (optional)',
+                onPressed:
-                style: TextStyle(fontWeight: FontWeight.w600),
+                    controller.isPickingPhoto.value || controller.isSaving.value
-              ),
+                    ? null
-              const SizedBox(height: 8),
+                    : controller.pickPhoto,
-              Wrap(
+                icon: const Icon(Icons.add_photo_alternate_outlined),
-                spacing: 8,
+                label: Text(
-                runSpacing: 8,
+                  controller.isPickingPhoto.value
-                children: [
+                      ? 'Wird geladen …'
-                  OutlinedButton.icon(
+                      : 'Foto auswählen',
-                    onPressed:
+                ),
-                        controller.isPickingPhoto.value ||
-                            controller.isSaving.value
-                        ? null
-                        : controller.pickPhoto,
-                    icon: const Icon(Icons.add_photo_alternate_outlined),
-                    label: Text(
-                      controller.isPickingPhoto.value
-                          ? 'Wird geladen …'
-                          : 'Foto auswählen',
-                    ),
-                  ),
-                  if (controller.foto.value != null)
-                    TextButton(
-                      onPressed: controller.isSaving.value
-                          ? null
-                          : controller.removePhoto,
-                      child: const Text('Foto entfernen'),
-                    ),
-                ],
               ),
+              if (controller.foto.value != null)
+                TextButton(
+                  onPressed: controller.isSaving.value
+                      ? null
+                      : controller.removePhoto,
+                  child: const Text('Foto entfernen'),
+                ),
             ],
           ),
-        ),
+        ],
-      ],
+      );
-    ),
+      if (constraints.maxWidth < 400) {
+        return Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [photo, const SizedBox(height: 12), controls],
+        );
+      }
+      return Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          photo,
+          const SizedBox(width: 16),
+          Expanded(child: controls),
+        ],
+      );
+    }),
   );
 }

lib/widgets/filament_card.dart

@@ -12,12 +12,14 @@ class FilamentCard extends StatelessWidget {
     required this.onTap,
     required this.onAction,
     this.verbrauchGramm = 0,
+    this.hatProfil = false,
   });
 
   final KaufFilamentModel filament;
   final VoidCallback onTap;
   final ValueChanged<String> onAction;
   final double verbrauchGramm;
+  final bool hatProfil;
 
   @override
   Widget build(BuildContext context) {
@@ -155,6 +157,11 @@ class FilamentCard extends StatelessWidget {
                     icon: Icons.layers_outlined,
                   ),
                   _DetailPill(label: weight, icon: Icons.scale_outlined),
+                  if (hatProfil)
+                    const _DetailPill(
+                      label: 'Profil erstellt',
+                      icon: Icons.check_circle_outline,
+                    ),
                 ],
               ),
               const Padding(

lib/widgets/filament_inventory.dart

@@ -32,6 +32,7 @@ class FilamentInventory extends StatelessWidget {
         sliver: Obx(() {
           final filamente = controller.filamente.toList();
           final verbrauch = Map<String, double>.from(controller.verbrauch);
+          final filamentIdsMitProfil = controller.filamentIdsMitProfil.toSet();
           final total = filamente.fold<double>(
             0,
             (sum, item) => sum + item.preis,
@@ -144,6 +145,9 @@ class FilamentInventory extends StatelessWidget {
                       key: ValueKey(filament.filamentId),
                       filament: filament,
                       verbrauchGramm: verbrauch[filament.filamentId] ?? 0,
+                      hatProfil: filamentIdsMitProfil.contains(
+                        filament.filamentId,
+                      ),
                       onTap: () => onOpen(filament),
                       onAction: (action) => onAction(action, filament),
                     );

lib/widgets/responsive_viewport.dart

@@ -0,0 +1,30 @@
+import 'package:flutter/material.dart';
+
+/// Keeps the navigator (including dialogs) usable in very narrow browser tabs.
+/// The native Windows/Linux runners use the same minimum client width.
+class ResponsiveViewport extends StatelessWidget {
+  const ResponsiveViewport({super.key, required this.child});
+
+  static const minimumWidth = 320.0;
+  final Widget child;
+
+  @override
+  Widget build(BuildContext context) => LayoutBuilder(
+    builder: (context, constraints) {
+      if (constraints.maxWidth >= minimumWidth) return child;
+      final media = MediaQuery.of(context);
+      return SingleChildScrollView(
+        scrollDirection: Axis.horizontal,
+        primary: false,
+        child: SizedBox(
+          width: minimumWidth,
+          height: constraints.maxHeight,
+          child: MediaQuery(
+            data: media.copyWith(size: Size(minimumWidth, media.size.height)),
+            child: child,
+          ),
+        ),
+      );
+    },
+  );
+}

linux/runner/my_application.cc

@@ -59,6 +59,8 @@ static void my_application_activate(GApplication* application) {
       project, self->dart_entrypoint_arguments);
 
   FlView* view = fl_view_new(project);
+  // Match ResponsiveViewport.minimumWidth; GTK adds window decorations.
+  gtk_widget_set_size_request(GTK_WIDGET(view), 320, 480);
   GdkRGBA background_color;
   // Background defaults to black, override it here if necessary, e.g. #00000000
   // for transparent.

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -7,8 +7,10 @@ import Foundation
 
 import file_picker_darwin
 import file_selector_macos
+import package_info_plus
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FilePickerPlugin.register(with: registry.registrar(forPlugin: "FilePickerPlugin"))
   FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
+  FPPPackageInfoPlusPlugin.register(with: registry.registrar(forPlugin: "FPPPackageInfoPlusPlugin"))
 }

pubspec.lock

@@ -493,6 +493,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.0"
+  package_info_plus:
+    dependency: "direct main"
+    description:
+      name: package_info_plus
+      sha256: "73ef2cd5c11a7548f9b7f6fc2a4f6113de2e64aa2a70de63feede95548822908"
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.2.2"
+  package_info_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: package_info_plus_platform_interface
+      sha256: db762cb2f4f25ee60fb6359773861b0f199e00b90d237bd85a76a1e806b46ef4
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.0"
   path:
     dependency: transitive
     description:

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # 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
+version: 1.0.2+3
 
 environment:
   sdk: ^3.13.0
@@ -41,6 +41,7 @@ dependencies:
   uuid: ^4.6.0
   file_selector: ^1.1.0
   file_picker: ^13.3.0
+  package_info_plus: ^10.2.2
 
 dev_dependencies:
   flutter_test:

scripts/build_release.ps1

@@ -0,0 +1,62 @@
+param(
+    [ValidateSet('apk', 'appbundle', 'windows', 'web', 'ios', 'ipa', 'macos', 'linux')]
+    [string]$Target = 'apk',
+    [string]$FlutterCommand = 'flutter',
+    [string[]]$FlutterArguments = @()
+)
+
+$ErrorActionPreference = 'Stop'
+$projectRoot = Split-Path -Parent $PSScriptRoot
+$pubspecPath = Join-Path $projectRoot 'pubspec.yaml'
+$lockPath = Join-Path $projectRoot '.release-build.lock'
+$buildLock = $null
+$originalBytes = $null
+$updated = $false
+$succeeded = $false
+
+try {
+    # Hold an exclusive lock; the OS releases it even if PowerShell is closed.
+    $buildLock = [System.IO.File]::Open(
+        $lockPath, [System.IO.FileMode]::OpenOrCreate,
+        [System.IO.FileAccess]::ReadWrite, [System.IO.FileShare]::None
+    )
+    foreach ($argument in $FlutterArguments) {
+        if ($argument -match '^--(build-name|build-number|debug|profile|config-only)(=|$)') {
+            throw "Argument $argument ist im versionierten Release-Build nicht erlaubt."
+        }
+    }
+    $originalBytes = [System.IO.File]::ReadAllBytes($pubspecPath)
+    $source = [System.Text.Encoding]::UTF8.GetString($originalBytes)
+    $versionMatch = [regex]::Match($source, '(?m)^version:\s*(\d+)\.(\d+)\.(\d+)\+(\d+)[ \t]*\r?$')
+    if (-not $versionMatch.Success) {
+        throw 'In pubspec.yaml wird eine Version wie 1.0.0+1 erwartet.'
+    }
+    $patch = [long]::Parse($versionMatch.Groups[3].Value) + 1
+    $build = [long]::Parse($versionMatch.Groups[4].Value) + 1
+    $nextVersion = '{0}.{1}.{2}+{3}' -f $versionMatch.Groups[1].Value, $versionMatch.Groups[2].Value, $patch, $build
+    $replacement = "version: $nextVersion"
+    if ($versionMatch.Value.EndsWith("`r")) { $replacement += "`r" }
+    $nextSource = $source.Remove($versionMatch.Index, $versionMatch.Length).Insert($versionMatch.Index, $replacement)
+    [System.IO.File]::WriteAllText($pubspecPath, $nextSource, [System.Text.UTF8Encoding]::new($false))
+    $updated = $true
+
+    Push-Location $projectRoot
+    try {
+        Write-Host "Release $nextVersion ($Target) wird erstellt ..."
+        $global:LASTEXITCODE = 0
+        & $FlutterCommand build $Target --release @FlutterArguments
+        if ($LASTEXITCODE -ne 0) {
+            throw "Flutter-Build fehlgeschlagen (Exitcode $LASTEXITCODE)."
+        }
+        $succeeded = $true
+        Write-Host "Release $nextVersion erfolgreich. Die Version wurde in pubspec.yaml gespeichert."
+    } finally {
+        Pop-Location
+    }
+} finally {
+    if ($updated -and -not $succeeded) {
+        [System.IO.File]::WriteAllBytes($pubspecPath, $originalBytes)
+        Write-Host 'Build nicht erfolgreich: Bisherige Version wiederhergestellt.'
+    }
+    if ($null -ne $buildLock) { $buildLock.Dispose() }
+}

scripts/test_build_release.ps1

@@ -0,0 +1,60 @@
+$ErrorActionPreference = 'Stop'
+$projectRoot = Split-Path -Parent $PSScriptRoot
+$testRoot = Join-Path $projectRoot ('build/release-script-test-' + [guid]::NewGuid().ToString('N'))
+$testScripts = Join-Path $testRoot 'scripts'
+New-Item -ItemType Directory -Path $testScripts -Force | Out-Null
+Copy-Item -LiteralPath (Join-Path $PSScriptRoot 'build_release.ps1') -Destination $testScripts
+$pubspecPath = Join-Path $testRoot 'pubspec.yaml'
+$original = "name: test_app`r`nversion: 1.2.9+41`r`n"
+[System.IO.File]::WriteAllText($pubspecPath, $original)
+$fakeFlutter = Join-Path $testRoot 'fake_flutter.ps1'
+@'
+param([Parameter(ValueFromRemainingArguments = $true)][string[]]$BuildArguments)
+if (($BuildArguments -join ' ') -notmatch '^build (apk|windows) --release') {
+    throw 'Unexpected Flutter arguments.'
+}
+Copy-Item -LiteralPath './pubspec.yaml' -Destination './built-version.yaml' -Force
+if (Test-Path './fail-build') { $global:LASTEXITCODE = 1 } else { $global:LASTEXITCODE = 0 }
+'@ | Set-Content -LiteralPath $fakeFlutter
+$releaseScript = Join-Path $testScripts 'build_release.ps1'
+
+function Assert-Version([string]$Expected) {
+    $pubspec = [System.IO.File]::ReadAllText($pubspecPath)
+    if ($pubspec -ne "name: test_app`r`nversion: $Expected`r`n") {
+        throw "Unexpected pubspec: $pubspec"
+    }
+}
+
+& $releaseScript -FlutterCommand $fakeFlutter
+Assert-Version '1.2.10+42'
+if ([System.IO.File]::ReadAllText((Join-Path $testRoot 'built-version.yaml')) -notmatch '1\.2\.10\+42') {
+    throw 'The build did not receive the new version.'
+}
+& $releaseScript -Target windows -FlutterCommand $fakeFlutter
+Assert-Version '1.2.11+43'
+
+New-Item -ItemType File -Path (Join-Path $testRoot 'fail-build') | Out-Null
+$failureCaught = $false
+try { & $releaseScript -FlutterCommand $fakeFlutter } catch { $failureCaught = $true }
+if (-not $failureCaught) { throw 'Build failure was not reported.' }
+Assert-Version '1.2.11+43'
+
+$invalidCaught = $false
+try {
+    & $releaseScript -FlutterCommand $fakeFlutter -FlutterArguments '--build-number=99'
+} catch { $invalidCaught = $true }
+if (-not $invalidCaught) { throw 'Manual version override was accepted.' }
+Assert-Version '1.2.11+43'
+
+$lock = [System.IO.File]::Open(
+    (Join-Path $testRoot '.release-build.lock'),
+    [System.IO.FileMode]::OpenOrCreate, [System.IO.FileAccess]::ReadWrite,
+    [System.IO.FileShare]::None
+)
+$lockCaught = $false
+try {
+    try { & $releaseScript -FlutterCommand $fakeFlutter } catch { $lockCaught = $true }
+} finally { $lock.Dispose() }
+if (-not $lockCaught) { throw 'Concurrent release was not blocked.' }
+Assert-Version '1.2.11+43'
+Write-Host 'All release-script checks passed (success, repeat build, rollback, overrides, lock).'

test/anwendung_bauteil_test.dart

@@ -236,6 +236,53 @@ void main() {
     expect(find.textContaining('nicht gefunden'), findsOneWidget);
   });
 
+  testWidgets('Inventory marks saved profiles and updates after creating one', (
+    tester,
+  ) async {
+    tester.view.physicalSize = const Size(1280, 1400);
+    tester.view.devicePixelRatio = 1;
+    addTearDown(tester.view.resetPhysicalSize);
+    addTearDown(tester.view.resetDevicePixelRatio);
+    await tester.pumpWidget(
+      GetMaterialApp(
+        theme: AppTheme.light,
+        initialRoute: HomeView.routeName,
+        getPages: SampleRouts.samplePages,
+      ),
+    );
+    await tester.pumpAndSettle();
+    final home = Get.find<HomeController>();
+    Finder badgeFor(String id) => find.descendant(
+      of: find.byKey(ValueKey(id)),
+      matching: find.text('Profil erstellt'),
+    );
+    expect(badgeFor('a'), findsNothing);
+    expect(badgeFor('b'), findsOneWidget);
+
+    await tester.tap(find.byKey(const ValueKey('a')));
+    await tester.pumpAndSettle();
+    final profileController = Get.find<AnwendungController>();
+    profileController.druckController.text = '220';
+    profileController.druckbettController.text = '60';
+    storage.failWrites = true;
+    await profileController.saveAnwendung();
+    expect(home.filamentIdsMitProfil, isNot(contains('a')));
+
+    storage.failWrites = false;
+    await profileController.saveAnwendung();
+    Get.back<void>();
+    await tester.pumpAndSettle();
+    expect(badgeFor('a'), findsOneWidget);
+    expect(badgeFor('b'), findsOneWidget);
+
+    // Reloads after imports must also clear badges for removed profiles.
+    await storage.saveModelList(AnwendungController.storageKey, []);
+    home.loadFilamente();
+    await tester.pumpAndSettle();
+    expect(find.text('Profil erstellt'), findsNothing);
+    expect(tester.takeException(), isNull);
+  });
+
   testWidgets(
     'Multicolor part persists both filaments and matching processing profile',
     (tester) async {

test/bauteil_bestand_test.dart

@@ -7,6 +7,7 @@ import 'package:get/get.dart';
 
 import 'package:ertl_filament_verwaltung/controller/bauteil_controller.dart';
 import 'package:ertl_filament_verwaltung/controller/home_controller.dart';
+import 'package:ertl_filament_verwaltung/helper/display_formats.dart';
 import 'package:ertl_filament_verwaltung/models/bauteil_model.dart';
 import 'package:ertl_filament_verwaltung/models/kauf_filament_model.dart';
 import 'package:ertl_filament_verwaltung/pages/bauteil_view.dart';
@@ -143,6 +144,7 @@ void main() {
       });
       expect(legacy.filamente.single.verbrauchGramm, 0);
       expect(legacy.fotoBytes, isNull);
+      expect(legacy.gesamtpreis, isNull);
     },
   );
 
@@ -151,6 +153,7 @@ void main() {
     (tester) async {
       await show(tester);
       fill();
+      controller.gesamtpreisController.text = '12,50';
       photos.result = png;
       await controller.pickPhoto();
       await controller.saveBauteil();
@@ -158,9 +161,19 @@ void main() {
       expect(remaining('b'), 960);
       final originalId = controller.bauteile.single.bauteilId;
       final originalDate = controller.bauteile.single.erstelltAm;
+      expect(controller.bauteile.single.gesamtpreis, 12.5);
+      expect(
+        storage
+            .getModelList(BauteilController.storageKey)
+            .single['gesamtpreis'],
+        12.5,
+      );
+      expect(controller.gesamtpreisController.text, isEmpty);
 
       await edit(tester, controller.bauteile.single);
       expect(controller.foto.value, png);
+      expect(controller.gesamtpreisController.text, '12,5');
+      controller.gesamtpreisController.text = '18,90';
       expect(controller.verfuegbarGramm('a'), 1000);
       controller.verbrauchController('a').text = '20';
       controller.verbrauchController('b').text = '80';
@@ -180,6 +193,10 @@ void main() {
         controller.bauteile.every((item) => item.fotoBase64 != null),
         isTrue,
       );
+      expect(
+        controller.bauteile.every((item) => item.gesamtpreis == 18.9),
+        isTrue,
+      );
       expect(remaining('a'), 960);
       expect(remaining('b'), 840);
       await controller.deleteBauteil(originalId);
@@ -190,6 +207,7 @@ void main() {
       expect(remaining('a'), 980);
       final reloaded = Get.put(BauteilController(), tag: 'reload');
       expect(reloaded.bauteile.single.fotoBytes, png);
+      expect(reloaded.bauteile.single.gesamtpreis, 18.9);
       expect(reloaded.bauteile.single.filamente.last.verbrauchGramm, 80);
       // Purchases retain the original weight; the persisted ledger is deducted.
       expect(
@@ -218,6 +236,32 @@ void main() {
     },
   );
 
+  testWidgets(
+    'Total price rejects invalid amounts, accepts zero and can be cleared',
+    (tester) async {
+      await show(tester);
+      fill();
+      for (final value in ['-1', 'NaN', 'Infinity', 'abc']) {
+        controller.gesamtpreisController.text = value;
+        await controller.saveBauteil();
+        expect(storage.getModelList(BauteilController.storageKey), isEmpty);
+      }
+      controller.gesamtpreisController.text = '0';
+      await controller.saveBauteil();
+      expect(controller.bauteile.single.gesamtpreis, 0);
+      await edit(tester, controller.bauteile.single);
+      controller.gesamtpreisController.clear();
+      await controller.saveBauteil();
+      expect(controller.bauteile.single.gesamtpreis, isNull);
+      expect(
+        storage
+            .getModelList(BauteilController.storageKey)
+            .single['gesamtpreis'],
+        isNull,
+      );
+    },
+  );
+
   testWidgets(
     'Editing credits only the edited booking; duplicates need new stock',
     (tester) async {
@@ -310,6 +354,7 @@ void main() {
     (tester) async {
       await show(tester, narrow: true);
       fill();
+      controller.gesamtpreisController.text = '12,50';
       photos.result = png;
       await controller.pickPhoto();
       await controller.saveBauteil();
@@ -320,6 +365,10 @@ void main() {
         scrollable: find.byType(Scrollable).first,
       );
       await tester.pumpAndSettle();
+      expect(
+        find.text('Gesamtpreis ${DisplayFormats.currency(12.5)}'),
+        findsOneWidget,
+      );
       expect(
         find.descendant(
           of: find.byType(BauteilCard),

test/export_test.dart

@@ -88,6 +88,7 @@ void main() {
         druckdauerMinuten: 60,
         gewichtGramm: 40,
         abfallGramm: 10,
+        gesamtpreis: 12.5,
         filamente: [
           const BauteilFilamentModel(
             filamentId: 'f1',
@@ -129,6 +130,7 @@ void main() {
       await controller.importData();
       expect(storage.tables, fixture());
       expect(home.materialien, ['PA12', 'PLA']);
+      expect(home.filamentIdsMitProfil, contains('f1'));
       expect(home.restgewicht(home.filamente.single), 950);
       expect(controller.hasError.value, isFalse);
     },
@@ -174,6 +176,23 @@ void main() {
     expect(storage.tables, fixture());
   });
 
+  test('Backup imports accept legacy parts without price and reject negative prices', () {
+    final legacy = fixture();
+    legacy[StorageKeys.bauteile]!.single.remove('gesamtpreis');
+    final decoded = BackupModel.decode(BackupModel(legacy).encode());
+    expect(
+      BauteilModel.fromJson(decoded.data[StorageKeys.bauteile]!.single)
+          .gesamtpreis,
+      isNull,
+    );
+    final invalid = fixture();
+    invalid[StorageKeys.bauteile]!.single['gesamtpreis'] = -1;
+    expect(
+      () => BackupModel.decode(BackupModel(invalid).encode()),
+      throwsFormatException,
+    );
+  });
+
   test('A failed import restores previously written tables', () async {
     storage.tables.addAll(fixture());
     files.source = BackupModel({for (final key in BackupModel.keys) key: []})

test/responsive_layout_test.dart

@@ -0,0 +1,136 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:get/get.dart';
+
+import 'package:ertl_filament_verwaltung/controller/anwendung_controller.dart';
+import 'package:ertl_filament_verwaltung/controller/bauteil_controller.dart';
+import 'package:ertl_filament_verwaltung/controller/home_controller.dart';
+import 'package:ertl_filament_verwaltung/helper/storage_keys.dart';
+import 'package:ertl_filament_verwaltung/main.dart';
+import 'package:ertl_filament_verwaltung/models/bauteil_model.dart';
+import 'package:ertl_filament_verwaltung/models/kauf_filament_model.dart';
+import 'package:ertl_filament_verwaltung/pages/anwendung_view.dart';
+import 'package:ertl_filament_verwaltung/pages/bauteil_view.dart';
+import 'package:ertl_filament_verwaltung/pages/export_view.dart';
+import 'package:ertl_filament_verwaltung/pages/home_view.dart';
+import 'package:ertl_filament_verwaltung/services/get_storage_services.dart';
+import 'package:ertl_filament_verwaltung/widgets/bauteil_card.dart';
+import 'package:ertl_filament_verwaltung/widgets/filament_card.dart';
+
+import 'helpers/memory_storage_service.dart';
+
+void main() {
+  setUp(() {
+    Get.testMode = true;
+    final storage = MemoryStorageService();
+    storage.tables[StorageKeys.filamente] = [
+      KaufFilamentModel(
+        filamentId: 'filament',
+        kaufdatum: DateTime(2026),
+        haendler: 'Ein Händler mit einem besonders langen Namen',
+        marke: 'Eine besonders lange Filamentmarke',
+        material: 'Benutzerdefiniertes Material mit langem Namen',
+        preis: 12345.67,
+        farbe: 'Ein lang beschriebener Farbton',
+        gewicht: '1000',
+      ).toJson(),
+    ];
+    storage.tables[StorageKeys.bauteile] = [
+      BauteilModel(
+        bauteilId: 'part',
+        erstelltAm: DateTime(2026),
+        name: 'Ein besonders lang benanntes Bauteil',
+        verwendung: 'Eine ausführliche Beschreibung der Verwendung',
+        druckdauerMinuten: 120,
+        gewichtGramm: 40,
+        abfallGramm: 10,
+        filamente: [
+          const BauteilFilamentModel(
+            filamentId: 'filament',
+            verbrauchGramm: 50,
+          ),
+        ],
+      ).toJson(),
+    ];
+    Get.put<GetStorageService>(storage);
+  });
+  tearDown(() => Get.reset());
+
+  Future<void> resize(WidgetTester tester, double width) async {
+    tester.view.physicalSize = Size(width, 640);
+    await tester.pumpAndSettle();
+    expect(tester.takeException(), isNull, reason: 'Width $width');
+  }
+
+  for (final route in [
+    HomeView.routeName,
+    BauteilView.routeName,
+    '${AnwendungView.routeName}/filament',
+    ExportView.routeName,
+  ]) {
+    testWidgets(
+      '$route survives resizing across desktop and narrow browser widths',
+      (tester) async {
+        tester.view.physicalSize = const Size(1280, 640);
+        tester.view.devicePixelRatio = 1;
+        addTearDown(tester.view.resetPhysicalSize);
+        addTearDown(tester.view.resetDevicePixelRatio);
+        await tester.pumpWidget(const MyApp());
+        await tester.pumpAndSettle();
+        if (route != HomeView.routeName) {
+          Get.toNamed(route);
+          await tester.pumpAndSettle();
+        }
+        if (route == BauteilView.routeName) {
+          Get.find<BauteilController>().toggleFilament('filament', true);
+        }
+        if (route.startsWith(AnwendungView.routeName)) {
+          Get.find<AnwendungController>().sonstigesController.text = 'Entwurf';
+        }
+        for (final width in [
+          900.0,
+          899.0,
+          600.0,
+          360.0,
+          320.0,
+          240.0,
+          320.0,
+          1280.0,
+        ]) {
+          await resize(tester, width);
+          expect(Get.currentRoute, route);
+          if (route == HomeView.routeName || route == BauteilView.routeName) {
+            final card = route == HomeView.routeName
+                ? find.byType(FilamentCard)
+                : find.byType(BauteilCard);
+            final scroll = route == HomeView.routeName
+                ? Get.find<HomeController>().pageScrollController
+                : Get.find<BauteilController>().scrollController;
+            scroll.jumpTo(scroll.position.maxScrollExtent);
+            await tester.pumpAndSettle();
+            expect(card, findsOneWidget);
+            expect(
+              tester.takeException(),
+              isNull,
+              reason: 'Card at width $width',
+            );
+            scroll.jumpTo(0);
+            await tester.pumpAndSettle();
+          }
+        }
+        if (route.startsWith(AnwendungView.routeName)) {
+          expect(
+            Get.find<AnwendungController>().sonstigesController.text,
+            'Entwurf',
+          );
+        }
+        if (route == BauteilView.routeName) {
+          expect(
+            Get.find<BauteilController>().selectedFilamente,
+            contains('filament'),
+          );
+        }
+      },
+    );
+  }
+}

test/widget_test.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:get/get.dart';
+import 'package:package_info_plus/package_info_plus.dart';
 
 import 'package:ertl_filament_verwaltung/controller/home_controller.dart';
 import 'package:ertl_filament_verwaltung/helper/storage_keys.dart';
@@ -17,6 +18,13 @@ void main() {
   late HomeController controller;
 
   setUp(() {
+    PackageInfo.setMockInitialValues(
+      appName: 'Filamentverwaltung',
+      packageName: 'com.example.ertl_filament_verwaltung',
+      version: '1.2.3',
+      buildNumber: '42',
+      buildSignature: '',
+    );
     Get.testMode = true;
     Get.put<GetStorageService>(MemoryStorageService());
     controller = Get.put(HomeController());
@@ -46,6 +54,17 @@ void main() {
     gewicht: '1000',
   );
 
+  testWidgets('Hamburger menu displays the installed version and build', (
+    tester,
+  ) async {
+    await showHome(tester, const Size(320, 640));
+    await tester.tap(find.byIcon(Icons.menu));
+    await tester.pumpAndSettle();
+    expect(find.text('Version 1.2.3'), findsOneWidget);
+    expect(find.text('Build 42'), findsOneWidget);
+    expect(tester.takeException(), isNull);
+  });
+
   testWidgets('Desktop shows both panes and edits PLA+', (tester) async {
     controller.filamente.add(sample());
     await showHome(tester, const Size(1280, 900));

windows/runner/flutter_window.cpp

@@ -51,6 +51,19 @@ LRESULT
 FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
                               WPARAM const wparam,
                               LPARAM const lparam) noexcept {
+  if (message == WM_GETMINMAXINFO) {
+    // Logical client size; include the DPI-scaled title bar and window borders.
+    const UINT dpi = GetDpiForWindow(hwnd);
+    RECT minimum = {0, 0, MulDiv(320, dpi, 96), MulDiv(480, dpi, 96)};
+    AdjustWindowRectExForDpi(
+        &minimum, static_cast<DWORD>(GetWindowLongPtr(hwnd, GWL_STYLE)), FALSE,
+        static_cast<DWORD>(GetWindowLongPtr(hwnd, GWL_EXSTYLE)), dpi);
+    auto* sizes = reinterpret_cast<MINMAXINFO*>(lparam);
+    sizes->ptMinTrackSize.x = minimum.right - minimum.left;
+    sizes->ptMinTrackSize.y = minimum.bottom - minimum.top;
+    return 0;
+  }
+
   // Give Flutter, including plugins, an opportunity to handle window messages.
   if (flutter_controller_) {
     std::optional<LRESULT> result =

windows/runner/main.cpp

@@ -26,8 +26,8 @@ int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
 
   FlutterWindow window(project);
   Win32Window::Point origin(10, 10);
-  Win32Window::Size size(1280, 720);
+  Win32Window::Size size(1400, 768);
-  if (!window.Create(L"ertl_filament_verwaltung", origin, size)) {
+  if (!window.Create(L"Filament Verwaltung", origin, size)) {
     return EXIT_FAILURE;
   }
   window.SetQuitOnClose(true);