claude --no-input was removed in Claude Code >= v2.1.81 and causes an
immediate crash ("error: unknown option '--no-input'"). The -p/--print
flag already handles non-interactive output, so --no-input is redundant.
Adds a regression test in tests/workflow-compat.test.cjs that scans all
workflow, command, and agent .md files to ensure --no-input never returns.
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
