blog: two new posts, The look-alike problem and Ironwood (#497)

Two council-reviewed posts ship together.

The look-alike problem (Industry, Vera Team): the false-positive
companion to Where cheats hide now. Honest software does the same
mechanical moves cheats do, a detection pattern is a proxy, the Vizor
trigger-string incident with the counts shown and not settled, what an
appeal actually is, and the practical close. …