add suggestion for when job logs are missing

[Panaetius]

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[github-actions]

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Category	Suggestion	Impact
General	Improve error message with retry suggestion Add a helpful suggestion to the error message to inform users that logs may not be immediately available and to retry later. coman/src/cscs/handlers.rs [189-195] if path.is_empty() { return Err(eyre!( "No {} log exists for job {}", if stderr { "stderr" } else { "stdout" }, job_id - )); + )) + .suggestion("It might take a while for the log to be created, try again later"); } Suggestion importance[1-10]: 8 __ Why: This suggestion enhances the error message by adding a helpful suggestion to inform users that logs may not be immediately available, which improves user experience and reduces support requests. The change is semantically correct and directly addresses a potential usability issue.	Medium