The sweep in #259 found user-facing English in lib/ and store/ -- scheduled
send, the read-receipt explanations, compose toasts and thrown errors -- plus
two swipe labels that reach t() through a variable and so were invisible to a
scan for t("literal") call sites.
17 strings and 3 plural forms. "{n} days" and "{n} hours" replace a suffix
appended in the code, which is English grammar the catalogue could not reach.