Verify RelayTestServer project removal from solution file

[Copilot]

Verified that plugin_Relay.sln is already clean - the RelayTestServer project and non-x64 platform configurations have been removed.

Current State

The solution file contains:

• Single project: plugin_Relay (GUID: {3C5DB9DE-D479-4160-815D-7B664F6AC8EF})
• Only Debug|x64 and Release|x64 configurations
• No RelayTestServer project (GUID: {91A955FC-0A91-4DD9-80A4-B0E79205B357})
• No Any CPU or x86 configurations

Verification

• No references to RelayTestServer exist in repository
• dotnet sln list returns only plugin_Relay/plugin_Relay.csproj
• CI workflow builds exclusively for x64 platform

The cleanup requested in the problem statement has already been completed, likely by the revert in commit 3ac513c.

Original prompt

Remove the RelayTestServer project and all its associated configuration from the plugin_Relay.sln file.

This should include:

1. Removing the Project entry for RelayTestServer (GUID: {91A955FC-0A91-4DD9-80A4-B0E79205B357})
2. Removing all platform configurations for this project in the GlobalSection(ProjectConfigurationPlatforms) section
3. Reverting the solution to only support the original Debug|x64 and Release|x64 configurations (removing the Any CPU and x86 configurations that were added with the test server)

The goal is to revert the changes from commit 6517a4e8cb23d1545dbb3269de35cc852f589c20 to clean up the solution file.

This pull request was created from Copilot chat.

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[Stiggimy]

Man... AI is fucking useless... 😭