Task 16: memoryd takes the day and the month of a time with str::get, never a
slice. Task 17: repeated error lines in memoryd, proto, brokerd and bxctl
written once. Neither changes behaviour. Both were applied to a scratch tree
from 5f82260: the gate passes with 936 tests, and four mutations of the new
helpers are caught by the existing tests. The README runs with OPENCODE_MODEL.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
