Claude CLI's built-in slash commands (/voice, /usage, "Unknown command:
...") run client-side with no model turn — they arrive as a result with
output_tokens: 0 and the user-visible text carried in result.result, but
no preceding assistant_message in the stream. Surface that text as an
assistant_message so the turn doesn't end silently.
Also unify Codex skill-command text blocks to always carry the
"$skill-name" prefix in the text payload, matching the no-args path
which already did.
Mohamed Boudra
12e24f9620