[Bug] Installer missing CAD plugin DLL files in setup_script.iss [Files] section

Bug Description
The installed directory C:\Program Files\HVAC AI Takeoff\ only contains the Backend folder. It is missing HvacAddin_GstarCAD.dll and CAD plugin assembly files.

Root Cause: setup_script.iss misses the source files entry for the compiled C# .NET CAD plugin binaries in its [Files] section.

Please update setup_script.iss and rebuild:

1. Add CAD Plugin DLLs to [Files] Section:

Include the compiled C# output binaries (for GstarCAD and AutoCAD) into {app}:
Source: "..\src\cad_plugin\bin\Release\GstarCAD2019\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs
(Adjust source path if C# binaries are built in a different output folder).

1. Verify Registry & Autoload Path:

Ensure the Registry loader key for GstarCAD points directly to "{app}\HvacAddin_GstarCAD.dll".

1. Rebuild Installer:

Re-run the build script (python scripts/build_all.py or compile setup_script.iss) to recreate HvacTakeoffSetup.exe.

Environment Info

• Platform: win32
• Terminal: null
• Version: 2.1.223
• Feedback ID: 2208bc26-eb9a-476d-8e1e-6dbccc34c521

Errors

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