Add Windows desktop platform support

[Copilot]

Enables the Flutter app to run natively on Windows desktop alongside existing web, iOS, and Android platforms.

Changes

Windows Platform

• Complete CMake build configuration with Win32 window management
• DPI-aware rendering with automatic dark mode support
• Application resources (icon, manifest, version info)

Platform Compatibility

• Conditional web-specific imports using kIsWeb flag
• Stub implementation for PathUrlStrategy on non-web platforms

// Before: Web-only import
import 'package:flutter_web_plugins/flutter_web_plugins.dart';

void main() async {
  setUrlStrategy(PathUrlStrategy());  // Crashes on desktop
  // ...
}

// After: Conditional platform handling
import 'web_url_strategy_stub.dart'
    if (dart.library.html) 'package:flutter_web_plugins/flutter_web_plugins.dart';

void main() async {
  if (kIsWeb) {
    setUrlStrategy(PathUrlStrategy());
  }
  // ...
}

CI/CD

• Windows build workflow with automated testing and artifact generation
• Proper GITHUB_TOKEN permission scoping

Documentation

• Windows setup requirements (Visual Studio 2022, Windows SDK)
• Comprehensive development guide covering build, debug, and distribution
• Platform-specific troubleshooting

Structure

windows/
├── CMakeLists.txt              # Top-level build config
├── flutter/
│   ├── CMakeLists.txt          # Flutter integration
│   └── generated_plugins.*     # Plugin registration
└── runner/
    ├── main.cpp                # Win32 entry point
    ├── win32_window.*          # Window management
    ├── flutter_window.*        # Flutter view hosting
    └── resources/              # Icon and manifest

All core application logic remains unchanged. Responsive design adapts automatically to desktop window sizes.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• canonical-bos01.cdn.snapcraftcontent.com
  • Triggering command: /usr/lib/snapd/snapd /usr/lib/snapd/snapd (dns block)
• https://storage.googleapis.com/flutter_infra_release/flutter/1527ae0ec577a4ef50e65f6fefcfc1326707d9bf/dart-sdk-linux-x64.zip
  • Triggering command: /usr/bin/curl curl --retry 3 --continue-at - --location --output /tmp/flutter/bin/cache/dart-sdk-linux-x64.zip REDACTED (http block)
• https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.27.4-stable.tar.xz
  • Triggering command: /usr/bin/wget wget -O flutter.tar.xz REDACTED (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>App als Windows-App lauffähig machen</issue_title>
<issue_description>Die App soll auch als Windows-App ausführbar und nutzbar sein. Dies beinhaltet die Anpassung der bestehenden Flutter-App für die Windows-Plattform sowie das Testen zentraler Funktionalitäten unter Windows. Mögliche Aufgaben:

• Projekt auf Windows-Builds konfigurieren
• Anpassung der User Interface für Windows spezifische Anforderungen (z.B. Fenstergröße, Maus-Interaktion)
• Durchführung von Tests
• Sicherstellen, dass alle Features der App unter Windows funktionieren
• Ggf. Einrichtung von Continuous Integration für Windows

Akzeptanzkriterien:

• Die App lässt sich unter Windows erfolgreich starten und bedienen.
• Kernfunktionen laufen fehlerfrei unter Windows.
• Die Anpassungen beeinträchtigen die Funktionalität auf anderen Plattformen nicht.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes App als Windows-App lauffähig machen #46

---

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Visit the preview URL for this PR (updated for commit babff07):

https://angryraphi--pr47-copilot-make-app-win-qvikzufr.web.app

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