ADR 0517 §5: correct keeps the entry's change, its reading lesson and one corrected line together, or none
of them; a test reads the source to prove only the acts write the action log, and each new verb refuses an
ungranted caller. The README and the callers setting name the twelve verbs.
ADR 0516 §3: the answer grows by each mail's tasks and promises, so a batch holds 6 mails, not 10, to stay
within its 40 s; a test proves the largest question stays under 64 KiB with every mail whole.
jochen