feat: add Open With context menu for media files

[Copilot]

Adds an "Open With" menu item to context menus across all media views, allowing users to launch files in external applications via the Windows application picker dialog.

Implementation

• New Command: OpenWithCommand uses Launcher.LaunchFileAsync() with DisplayApplicationPicker = true to show the native Windows "Open With" dialog

  • CanExecute validates the media source is a StorageFile to disable the menu item for unsupported sources (URLs, streams)
  • Exception handling with contextual logging for debugging

• UI Integration: Added menu item to 12 pages and controls:

  • Video/folder views: AllVideosPage, FolderViewPage, FolderListViewPage
  • Music library: HomePage, SongsPage, AlbumDetailsPage, ArtistDetailsPage
  • Search: SearchResultPage, SongSearchResultPage
  • Playback: PlayQueueControl, PlayerControls

• Localization: Added OpenWith resource string to en-US/Resources.resw

Usage

Right-click any media file → "Open With" → Select application from Windows picker

<MenuFlyoutItem
    Command="{StaticResource OpenWithCommand}"
    CommandParameter="{Binding}"
    Icon="{ui:FontIcon Glyph=&#xE8A7;}"
    Text="{strings:Resources Key=OpenWith}" />

private async Task OpenWithAsync(MediaViewModel? parameter)
{
    if (parameter?.Source is not StorageFile file)
        return;

    LauncherOptions options = new() { DisplayApplicationPicker = true };
    await Launcher.LaunchFileAsync(file, options);
}

Note: Uses Windows' native "Open With" dialog rather than custom favorites/pinning UI. Windows manages recently used apps automatically.

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:

• crl.godaddy.com
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/Screenbox/.codeql-scratch/dbs/csharp/working/3256F08C1671F9FA0FA5343B5C71D01D/missingpackages_workingdir --packages /home/REDACTED/work/Screenbox/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/Screenbox/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force -l ox/Strings/en-US/Resources.resw .cs /home/REDACTED/.local/bin/grep OpenWithCommand .cs cal/bin/grep grep (dns block)
• ocsp.godaddy.com
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/Screenbox/.codeql-scratch/dbs/csharp/working/3256F08C1671F9FA0FA5343B5C71D01D/missingpackages_workingdir --packages /home/REDACTED/work/Screenbox/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/Screenbox/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force -l ox/Strings/en-US/Resources.resw .cs /home/REDACTED/.local/bin/grep OpenWithCommand .cs cal/bin/grep grep (dns 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>"Open With" Button + Favorite Applications</issue_title>
<issue_description>Add an "Open With" option that lets users quickly choose which app to open a file with, and allow favorite apps to be pinned for faster access.

Extra Ideas:

Separate preferred apps for audio, video, images, etc.

Add a simple Photo Viewer for quick image previewing.

Why:
This would make viewing and editing files faster, more flexible, and more user-friendly.</issue_description>

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

@United600 > Add an "Open With" option that lets users quickly choose which app to open a file with, and allow favorite apps to be pinned for faster access.

Wouldn't that be better handled by a file explorer? Sorry, but can you please elaborate on it and explain the use case? I'm having trouble understanding what you have in mind.</comment_new>

• Fixes "Open With" Button + Favorite Applications #735

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