Iteration stderr-markers-2 close, task 5 of the stderr-class-markers
plan. C14's Current state gains the marker paragraph — note/warning
classes for continuing-run diagnostics, bare `aura: ` for exit-carrying
error lines and plain info lines, grep-stable grammar, single source in
aura-cli/src/diag.rs — and the glossary gains the `stderr class marker`
entry. No new C-number: C14 already owns the CLI stderr conventions and
the exit-code partition this grammar completes (derivation logged on
the #278 decision thread).
With this the milestone promise is shipped: the two diagnostic classes
are machine-separable on stderr (#278), and the all-zero-trade
walk-forward announces itself instead of completing silently (#313).
Exit-code semantics unchanged throughout.
closes#278closes#313
claude
913d18755e