Agent not generating using relative paths on --output

Hi, I noticed that if on `--output` argument a relative path is used (for example `./agent.exe`) , the agent is not generated. It works only using absolute paths. Maybe could be an improvement to make it work anyway (I spent some minutes until realize of what is happening).

Start by tracing the command-line handling of the --output argument and the agent-generation path for relative versus absolute output paths. Reproduce the issue with ./agent.exe, then verify that generation succeeds with the relative path while preserving the existing absolute-path behavior.

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