Agent desktop improvements

[thenextman]

The desktop companion app for Agent is now deployed alongside the main Agent feature, instead of exclusively for PEDM. This gives the user some visibility that the Agent is installed and running and provides basic information (e.g. an About window).

The desktop companion app also gets several upgrades:

• High DPI support (for the About window)
• Dark theme support (for the About window)
• French localization
• PEDM menu options are hidden if the PEDM feature is not enabled
• Context menu indicates if the Devolutions Agent service is running or not
• Hold "Ctrl" while right-clicking the tray icon to show which features are enabled

[github-actions]

Let maintainers know that an action is required on their side

• Add the label release-required Please cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module) when you request a maintainer to cut a new release (Devolutions Gateway, Devolutions Agent, Jetsocat, PowerShell module)

• Add the label release-blocker Follow-up is required before cutting a new release if a follow-up is required before cutting a new release

• Add the label publish-required Please publish libraries (`Devolutions.Gateway.Utils`, OpenAPI clients, etc) when you request a maintainer to publish libraries (Devolutions.Gateway.Utils, OpenAPI clients, etc.)

• Add the label publish-blocker Follow-up is required before publishing libraries if a follow-up is required before publishing libraries

[Copilot]

Pull request overview

This pull request improves the Desktop Agent application with better DPI awareness, dark theme support, resource reorganization, and configuration-based feature visibility. The changes modernize the UI to work better on high-DPI displays and add support for Windows dark mode while making the PEDM features conditionally visible based on configuration.

Changes:

• Added DPI awareness configuration through app.manifest and App.config for better high-resolution display support
• Implemented dark theme support with automatic detection based on Windows theme settings
• Reorganized resources into separate files (StaticResources for non-localizable strings, ImageResources for graphics, Resources for localizable strings)
• Corrected installer feature assignments so desktop agent files are properly associated with AGENT_FEATURE instead of PEDM_FEATURE
• Added configuration loading to conditionally display PEDM profiles only when enabled

Reviewed changes

Copilot reviewed 13 out of 16 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
package/AgentWindowsManaged/Program.cs	Fixed feature assignment for desktop agent directory and registry entry from PEDM_FEATURE to AGENT_FEATURE
dotnet/DesktopAgent/app.manifest	Added application manifest with DPI awareness and Windows 10 compatibility settings
dotnet/DesktopAgent/Utils/UI.cs	Added utility methods for dark theme detection and immersive dark mode application
dotnet/DesktopAgent/Utils/Service.cs	Added utility method to check if a Windows service is running
dotnet/DesktopAgent/Utils/Config.cs	Added configuration loading from agent.json with support for feature flags
dotnet/DesktopAgent/Properties/StaticResources.resx	New resource file for non-localizable static strings (product and vendor names)
dotnet/DesktopAgent/Properties/StaticResources.Designer.cs	Auto-generated designer code for static resources
dotnet/DesktopAgent/Properties/Resources.resx	Removed image resources and static strings, added new menu items for service status
dotnet/DesktopAgent/Properties/Resources.fr.resx	Added French translations for new menu items
dotnet/DesktopAgent/Properties/Resources.Designer.cs	Updated to reflect resource changes and version bump to 18.0.0.0
dotnet/DesktopAgent/Properties/ImageResources.resx	New resource file dedicated to image resources (icon and logo)
dotnet/DesktopAgent/Properties/ImageResources.Designer.cs	Auto-generated designer code for image resources
dotnet/DesktopAgent/Program.cs	Updated to load configuration, check service status, and conditionally display PEDM menu based on config
dotnet/DesktopAgent/DesktopAgent.csproj	Added manifest reference, ServiceProcess reference, and new resource file definitions
dotnet/DesktopAgent/App.config	Added DPI awareness configuration for Windows Forms
dotnet/DesktopAgent/About.cs	Refactored About dialog with DPI awareness, dark theme support, and improved layout using TableLayoutPanel

Files not reviewed (3)

• dotnet/DesktopAgent/Properties/ImageResources.Designer.cs: Language not supported
• dotnet/DesktopAgent/Properties/Resources.Designer.cs: Language not supported
• dotnet/DesktopAgent/Properties/StaticResources.Designer.cs: Language not supported

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