perf(runner): detect base64 -w with a case match, drop a grep fork#803
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state.sh scraped `base64 --help` through a `grep -c -- -w` fork at load to cache whether base64 supports -w. Match the captured help text with a shell `case` instead — identical detection, one fewer fork on every cold start (1 -> 0 grep forks), which matters across the acceptance suite's nested runs. No behaviour change.
This was referenced Jul 15, 2026
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🤔 Background
Continuing the cold-start fork reduction from #798/#802.
state.shscrapedbase64 --helpthrough agrepfork at load to cache whether base64 supports-w.💡 Changes
base64 --helptext with a shellcaseinstead of piping intogrep— identical detection, one fewer fork on every cold start (1 → 0 grep forks).