Command line interface for accessing the Open Web Index shards and slices.

Correct the review status: F2 is fixed on main, not outstanding master

The status line still listed F2 as outstanding while 1a11291 has fixed it on main since the 5.6.0 release. Two commits are now ahead of origin/main and unreleased -- 1a11291 (F2, zero discovery reported as success) and dbf2cca (F7, doctor raising TypeError for every non-LEXIS repository). Untouched: F3, F4, F6.