Why: the S9 acceptance corrections left no repeatable harness for the
duty-flows browser verification, and the doc-level in-flight confirmation
path had never been driven in a real browser; the legacy e2e.sh seeding
predates the login-key credential contract.
Evidence: bash scripts/e2e-duties.sh end-to-end PASS — granted non-admin
preview 200, in-flight round + reviewer change surfaces the confirmation
checkbox and a confirmed save invalidates the doc submission, idempotent
re-save applied=0 unchanged=1, unauthorized member preview 400,
void-legacy then doc submit passes (evidence row in this card).
Impact: scripts-only; no product code or pins change.
Refs: S9 acceptance report P0-B
agent-exec-transport
weichen