Release build fails on AOT analyzer JSON serialization warnings

[Widthdom]

Summary

On current origin/main, the standard pre-PR build command fails before this branch's extractor changes are involved:

dotnet build CodeIndex.sln -c Release -p:UseSharedCompilation=false

The failure is a broad set of AOT/trim analyzer errors from existing JSON serialization call sites, for example:

• src/CodeIndex/Cli/ActiveWorkspace.cs(55,38): error IL3050
• src/CodeIndex/Cli/WorkspaceCommandRunner.cs(30,35): error IL3050
• src/CodeIndex/Cli/CdidxConfigFile.cs(359,27): error IL3050
• src/CodeIndex/Mcp/McpToolHandlers.cs(...): error IL3050

Observed on commit 03142f4028793b0cd46682b694d709de26d25de4 / branch work merged with latest origin/main.

Expected

The documented Release build command should pass, or the project should disable these analyzers for non-AOT validation if they are intentionally out of scope.

[Widthdom]

Closing: after merging current origin/main (a08e281), the standard Release build command completes without the IL3050 failure observed on the earlier base.

[Widthdom]

Reopening: CI still reproduces this during the Build and Test workflow formatting step on ubuntu net8.0, with IL3050 errors in existing JSON serialization call sites.

[Widthdom]

Work started on branch fix-issue2791.