Add the -json flag to maglevc(1): the contract verified by a live smoke
test against a maglevd (chbtl2) — show/query commands print the object
as JSON, actions (set/sync/config reload) print {} on success, and
failures print {"error": "..."} on stderr with a non-zero exit. JSON
output is never colorized. Also corrects the -color description (the
palette is now bright blue, shared from golang-cli) and refreshes the
man date.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
pim
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