Show reviewed-of-total coverage: 148 of 379 public recordings
Coverage gains a channel_total field (379 = 347 videos + 32 livestreams,
the complete public channel minus shorts, re-surveyed today), validated
as >= reviewed sources and mirrored between principles.json and
library.json. The library page appends "148 of the channel's 379 public
recordings reviewed so far" to the reviewed-span line, and the home
stat card reads "148 of 379 public recordings reviewed" — so the span
never implies full-archive coverage while the library is still growing
toward it. Library intro copy no longer claims the reviewed videos are
"the latest" (the next batch deliberately reaches back to 2015).
