Adds a third metric that calls the real calculateCritical for every monster on
the merged map and fully consumes the generator, plus a second console.table
with monsters / total ms (sampled median of one full-map sweep) / avg ms.
avg ms equals total ms divided by the monster count.
Merges the first 1/5/13 real 13x13 maps into one grid-tiled map
(13x13, 39x26, 52x52 with 11/79/204 monsters), builds the scene from a real
CoreState (real converters/reducer/calculator/final effect), assigns 12 real
Enemy prefabs (3 CommonAura ranges + GuardAura) via a seeded mulberry32, and
records buildup + map damage build timings with performance.mark/measure.
Zero assertions.
