NFR-ARCH-1's register note says what b1d1c472 and 7be1efff met and what
they left, but outstanding.md, which exists to show the distance between
the register and the binary, had no entry, and catalog.md §6 still said
interactive work runs "on the decode pool with the I/O pool behind it"
when there are no pools.
outstanding.md §4 gains the entry: named and guarded, not bounded — the
counts are a budget, the guard covers block_on only, the two mask
workers and the core crates' threads are outside the module. catalog.md
names the executors the thumbnail and metadata work starts on and says
the counts are not yet enforced.
dtourolle
427a572aad