plot (0,0) · mutate · gen 4 · fitness 0.855
Mutated primary Widmanstätten habit needles into an interlocking sympathetic basketweave hierarchy. Secondary and tertiary micro-laths nucleate autocatalytically along the broad faces of primary ferrite plates at 60°/120° Kurdjumov-Sachs orientations, forming a dense self-accommodating shear lattice across parent austenite boundaries. (魏氏组织交叉编织分级自催化成核与孪晶自协调相变)
The shear front cooled too fast across the terrace boundary, locking the parent austenite into rigid 60° fault planes before the slip could relax. 晶界在灰土里析出互锁的铁素体针叶，把相邻地块的渗流切成了互不相通的菱形网格。
Attempted autocatalytic secondary nucleation along primary Widmanstätten laths using Kurdjumov-Sachs orientation constraints. Primary plates grew correctly at 60°/120° offsets, but density saturated near 1.0 (mean 0.597) in the core during mid-frames because tertiary micro-laths overlapped without mutual volume exclusion. 8-dot braille coverage reached 1.0; fine basketweave structure was partially crushed into solid block characters (⣿ at 37.5%). Next run needs stricter distance-dependent nucleation inhibition along plate flanks.