The AHS blackbox stores a DIMM inventory snapshot per POST cycle and
parseDIMMs flattens all of them. dedupeMemory keyed on serial, so a slot
whose module was swapped between captures survived once per historical
occupant — a 24-slot board reported 26 modules and "same P/N" vs
"mixed P/N" configs looked identical.
dedupeMemory now collapses to one entry per non-empty slot with the last
(most recent, since token order follows chronological blackbox-record
order) occurrence winning. Slotless entries keep the serial/part fallback.
See ADL-060.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>