GREEN side of the #217 executable-spec: --stop-length/--stop-k are now
optional on the three dissolved verbs; each missing flag independently
defaults to the single-sourced regime constants (length 3, k 2.0) at
the argv-boundary extractors — the same regime the campaign member
runner resolves for an unbound regime. The generated campaign document
still binds the regime explicitly, so the default spelling is
content-identical to an explicit --stop-length 3 --stop-k 2.0 (pinned
by registry dedup in the headline test). The multi-value stop refusal
survives byte-identically; sweep is untouched.
Sanctioned contract migrations (decision on the issue, 2026-07-09):
walkforward_dissolved_refuses_missing_knobs now pins the surviving
multi-value refusal; mc_args_from_refuses_missing_knobs pins the
default path. Usage strings name the defaults.
Held quality nit (deferred to cycle close, minimal-slice constraint):
the None=>default / Some=>parse stop block recurs 4x across the
walkforward/mc extractors.
closes#217
Brummel
210230596e