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LogWisp: from a tail-and-grep habit to a log transport

LogWisp began as a way to stop doing the same thing every morning: SSH into each server, tail -F a file, grep it, repeat on the next one. The platforms that solve this are sized for fleets; my servers are a handful, their traffic is low, and I wanted one static binary that streams, filters and forwards logs and asks for nothing else. This is how that binary found its shape.