[BUG] Crash if model not exists via gPRC API server - Desktop app and gRPCServerCLI-macOS

[ianscrivener]

Both the DT desktop app and gRPCServerCLI-macOS crash if you request a T2I generation with a main model .ckpt that doesn't exist.
1.20260410.1

[monsterai1]

Hello, nice to meet you.
I want to contribute at your project.
I suggest this direction about this issue.
-Add a pre-check for .ckpt existence before initialization
-Wrap model loading in proper exception handling
-Return a clear error via gRPC response instead of terminating the process
How do you think about this?
If you interest, please let me solve this issue.