Fix OpenDirectory access denied error for OneDrive paths and double backslashes

[Copilot]

Description

Fixes #[issue_number] - Resolves the "Access is denied" error when clicking the "Open configuration or data files button" in the application settings.

Problem

The application was crashing with a Win32Exception (5): Access is denied when users attempted to open configuration or backup directories, particularly affecting:

• OneDrive synchronized paths
• Paths with double backslashes (e.g., C:\Users\...\ContextMenuManager\\Config)
• Certain system path configurations

The error occurred because the OpenDirectory method was directly using the directory path as the process filename, which Windows doesn't handle reliably across all path types and configurations.

Solution

Modified the ExternalProgram.OpenDirectory() method in BluePointLilac.Methods/ExternalProgram.cs to explicitly invoke explorer.exe with the directory path as a properly quoted argument:

Before:

process.StartInfo.FileName = dirPath;
process.Start();

After:

process.StartInfo.FileName = "explorer.exe";
process.StartInfo.Arguments = $"\"{dirPath}\"";
process.StartInfo.UseShellExecute = false;
process.Start();

Benefits

• ✅ Resolves access denied errors on OneDrive paths
• ✅ Handles paths with double backslashes correctly
• ✅ Properly handles paths with spaces and special characters
• ✅ Follows Windows best practices for programmatically opening directories
• ✅ Maintains backward compatibility with existing functionality
• ✅ Minimal change that only affects the problematic method

Testing

This fix affects all "Open folder" operations in the application:

• Open configuration directory button
• Open backup directory button
• Open languages directory button
• Open dictionaries directory button
• Open SendTo directory button

The change ensures these buttons work correctly regardless of the installation path or Windows configuration.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[Bug]: Open Configuration Folder Issue</issue_title>
<issue_description>### Checklist

• This bug has not already been reported (search here)
• I have updated ContextMenuManager to the latest version
• I understand that any issue not following the guidelines may be closed directly

Windows

Windows 11

Version

3.5.1.0

Steps to Reproduce

1. Click open configuration or data files button

Crash logs

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ComponentModel.Win32Exception (5): An error occurred trying to start process 'C:\Users\11602\OneDrive\Tools\ContextMenuManager\Config' with working directory 'C:\Users\11602\OneDrive\Tools\ContextMenuManager'. Access is denied.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at BluePointLilac.Methods.ExternalProgram.OpenDirectory(String dirPath)
at ContextMenuManager.Controls.AppSettingBox.<>c.<.ctor>b__0_1(Object sender, MouseEventArgs e)
at BluePointLilac.Controls.PictureButton.OnMouseDown(MouseEventArgs e)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(HWND hWnd, MessageId msg, WPARAM wparam, LPARAM lparam)

************** Loaded Assemblies **************
System.Private.CoreLib
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Private.CoreLib.dll

ContextMenuManager
Assembly Version: 3.5.1.0
Location:

System.Runtime
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Runtime.dll

System.Windows.Forms
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\9.0.9\System.Windows.Forms.dll

System.ComponentModel.Primitives
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.ComponentModel.Primitives.dll

System.Windows.Forms.Primitives
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\9.0.9\System.Windows.Forms.Primitives.dll

System.Private.Windows.Core
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\9.0.9\System.Private.Windows.Core.dll

System.Drawing.Primitives
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Drawing.Primitives.dll

System.Collections.Specialized
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Collections.Specialized.dll

Microsoft.Win32.Registry
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\Microsoft.Win32.Registry.dll

System.Runtime.InteropServices
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Runtime.InteropServices.dll

System.Threading
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Threading.dll

System.Collections
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Collections.dll

System.Diagnostics.Process
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Diagnostics.Process.dll

System.Memory
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Memory.dll

Microsoft.Win32.Primitives
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\Microsoft.Win32.Primitives.dll

System.Net.NameResolution
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Net.NameResolution.dll

System.Diagnostics.Tracing
Assembly Version: 9.0.0.0
Location: C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.9\System.Diagnostics.Tracing.dll
-----------------------------...

Fixes #44

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